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Commit | Line | Data |
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4e9e3152 | 1 | subroutine WHITGevolvep(xin,qin,p2in,ip2in,pdf) |
2 | include 'parmsetup.inc' | |
3 | real*8 xin,qin,q2in,p2in,pdf(-6:6),xval(45),qcdl4,qcdl5 | |
4 | real*8 upv,dnv,usea,dsea,str,chm,bot,top,glu | |
5 | character*16 name(nmxset) | |
6 | integer nmem(nmxset),ndef(nmxset),mmem | |
7 | common/NAME/name,nmem,ndef,mmem | |
8 | integer nset | |
9 | ||
10 | save | |
11 | call getnset(iset) | |
12 | call getnmem(iset,imem) | |
13 | ||
14 | if(imem.eq.1.or.imem.eq.0) then | |
15 | call SFWHI1(xin,qin,upv,dnv,usea,dsea,str,chm,glu) | |
16 | ||
17 | elseif(imem.eq.2) then | |
18 | call SFWHI2(xin,qin,upv,dnv,usea,dsea,str,chm,glu) | |
19 | ||
20 | elseif(imem.eq.3) then | |
21 | call SFWHI3(xin,qin,upv,dnv,usea,dsea,str,chm,glu) | |
22 | ||
23 | elseif(imem.eq.4) then | |
24 | call SFWHI4(xin,qin,upv,dnv,usea,dsea,str,chm,glu) | |
25 | ||
26 | elseif(imem.eq.5) then | |
27 | call SFWHI5(xin,qin,upv,dnv,usea,dsea,str,chm,glu) | |
28 | ||
29 | elseif(imem.eq.6) then | |
30 | call SFWHI6(xin,qin,upv,dnv,usea,dsea,str,chm,glu) | |
31 | ||
32 | else | |
33 | CONTINUE | |
34 | endif | |
35 | ||
36 | pdf(-6)= 0.0d0 | |
37 | pdf(6)= 0.0d0 | |
38 | pdf(-5)= 0.0d0 | |
39 | pdf(5 )= 0.0d0 | |
40 | pdf(-4)= chm | |
41 | pdf(4 )= chm | |
42 | pdf(-3)= str | |
43 | pdf(3 )= str | |
44 | pdf(-2)= usea | |
45 | pdf(2 )= upv | |
46 | pdf(-1)= dsea | |
47 | pdf(1 )= dnv | |
48 | pdf(0 )= glu | |
49 | ||
50 | return | |
51 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
52 | entry WHITGread(nset) | |
53 | read(1,*)nmem(nset),ndef(nset) | |
54 | return | |
55 | c | |
56 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
57 | entry WHITGalfa(alfas,qalfa) | |
58 | call getnset(iset) | |
59 | call getnmem(iset,imem) | |
60 | call GetOrderAsM(iset,iord) | |
61 | call Getlam4M(iset,imem,qcdl4) | |
62 | call Getlam5M(iset,imem,qcdl5) | |
63 | call aspdflib(alfas,Qalfa,iord,qcdl5) | |
64 | ||
65 | return | |
66 | c | |
67 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
68 | entry WHITGinit(Eorder,Q2fit) | |
69 | return | |
70 | c | |
71 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
72 | entry WHITGpdf(mem) | |
73 | call getnset(iset) | |
74 | call setnmem(iset,mem) | |
75 | c imem = mem | |
76 | return | |
77 | c | |
78 | 1000 format(5e13.5) | |
79 | end | |
80 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
81 | c------------------------------------------------------- | |
82 | subroutine SFWHI1(ZX,ZQ,ZUV,ZDV,ZUB,ZDB,ZSB,ZCB,ZGL) | |
83 | c------------------------------------------------------- | |
84 | c WHIT1 parton distribution in the photon | |
85 | c | |
86 | c INPUT: integer ic : if ic=0 then qc=0 | |
87 | c else qc is calculated | |
88 | c DOUBLE PRECISION Q2 : energy scale Q^2 (GeV^2) | |
89 | c DOUBLE PRECISION x : energy fraction | |
90 | c | |
91 | c OUTPUT: DOUBLE PRECISION qu : up-quark dist. | |
92 | c DOUBLE PRECISION qd : down- or strange-quark dist. | |
93 | c DOUBLE PRECISION qc : charm-quark dist. | |
94 | c DOUBLE PRECISION g : gluon dist. | |
95 | c------------------------------------------------------- | |
96 | c Modified by M.Tanaka on July 22, 1994. | |
97 | c The bug pointed out by M.Drees is fixed. | |
98 | c------------------------------------------------------- | |
99 | c Modified by I.Watanabe on July 22, 1994. | |
100 | c------------------------------------------------------- | |
101 | implicit none | |
102 | external WHIT1G | |
103 | double precision | |
104 | + ZX,ZQ,ZUV,ZDV,ZUB,ZDB,ZSB,ZCB,ZGL | |
105 | c arg | |
106 | integer ic | |
107 | DOUBLE PRECISION Q2,x | |
108 | DOUBLE PRECISION qu,qd,qc,g | |
109 | c const | |
110 | DOUBLE PRECISION q42it,q52it,lam42,lam52 | |
111 | DOUBLE PRECISION alinv,mc,PI | |
112 | c local | |
113 | DOUBLE PRECISION qv,qsea,cv,cs,dcv,dcs | |
114 | DOUBLE PRECISION A0val,A1val,A2val,Bval,Cval, | |
115 | $ A0sea,B0sea,BB0sea,C0sea | |
116 | DOUBLE PRECISION A0dcv,A1dcv,A2dcv,A3dcv,Bdcv,Cdcv | |
117 | DOUBLE PRECISION Adcs, B0dcs, B1dcs, Cdcs | |
118 | DOUBLE PRECISION x1,x2,mc2q2 | |
119 | DOUBLE PRECISION s,s2,s3,s4,prsccf,alstpi | |
120 | DOUBLE PRECISION WHIT1G | |
121 | c parameters | |
122 | parameter(lam42=0.16d0, lam52=0.091411319d0) | |
123 | parameter(Q42IT=4.0d0, Q52IT=100.0d0) | |
124 | parameter(alinv=137.036d0, mc=1.5d0) | |
125 | parameter(pi=3.14159265358979323846d0) | |
126 | common /scale/ s,s2,s3,s4,prsccf | |
127 | c | |
128 | c begin | |
129 | x=ZX | |
130 | Q2=ZQ*ZQ | |
131 | ic=1 | |
132 | c | |
133 | x1=1.0d0-x | |
134 | x2=x**2 | |
135 | mc2q2=mc**2/Q2 | |
136 | c | |
137 | if(Q2.lt.100.0d0) then | |
138 | c under 100 GeV^2 | |
139 | c | |
140 | c set scale s | |
141 | if(Q2.lt.4.0d0) then | |
142 | cccc for under 4GeV^2 prescription | |
143 | s= 0.0d0 | |
144 | prsccf = log(Q2/LAM42)/ log(Q42IT/LAM42) | |
145 | alstpi = 6.0d0/25.0d0/ log(Q42IT/LAM42) | |
146 | else | |
147 | s= log( log(Q2/LAM42)/ log(Q42IT/LAM42)) | |
148 | prsccf = 1.0d0 | |
149 | alstpi = 6.0d0/25.0d0/ log(Q2/LAM42) | |
150 | endif | |
151 | s2=s**2 | |
152 | s3=s2*s | |
153 | s4=s2**2 | |
154 | c | |
155 | cccccc WHIT1 quark (U100) | |
156 | c | |
157 | A0val= 1.882000d+00+s*( 1.213000d+00)+s2*( 6.970000d-01) | |
158 | A1val= s*(-2.361000d+00)+s2*(-1.136000d+00) | |
159 | A2val= s*( 5.280000d-01)+s2*( 2.406000d+00) | |
160 | Bval = 5.000000d-01+s*( 2.107000d-02)+s2*( 4.130000d-03) | |
161 | Cval = 2.500000d-01+s*(-2.376000d-01)+s2*( 2.018000d-01) | |
162 | $ +s3*(-5.040000d-02) | |
163 | A0sea= 6.510000d-01+s*( 1.291000d+00)+s2*(-4.470000d+00) | |
164 | $ +s3*( 5.140000d+00)+s4*(-2.091000d+00) | |
165 | B0sea=-3.820000d-02+s*( 9.010000d-02)+s2*(-1.356000d+00) | |
166 | $ +s3*( 1.582000d+00)+s4*(-6.440000d-01) | |
167 | BB0sea=2.084000d+00+s*( 7.740000d+00)+s2*(-2.970000d+01) | |
168 | $ +s3*( 3.860000d+01)+s4*(-1.705000d+01) | |
169 | C0sea= 7.000000d+00+s*(-1.608000d+01)+s2*( 4.670000d+01) | |
170 | $ +s3*(-5.710000d+01)+s4*( 2.386000d+01) | |
171 | c | |
172 | qv = prsccf/alinv/x* | |
173 | $ (A0val+A1val*x+A2val*x2) * x**Bval * x1**Cval | |
174 | qsea= prsccf/alinv/x* | |
175 | $ A0sea * x**(B0sea+BB0sea*x) * x1**C0sea | |
176 | c | |
177 | qu = qv/3.0d0 + qsea/6.0d0 | |
178 | qu = qu*x | |
179 | ZUV=qu | |
180 | ZUB=qu | |
181 | qd = qv/12.0d0 + qsea/6.0d0 | |
182 | qd = qd*x | |
183 | ZDV=qd | |
184 | ZDB=qd | |
185 | ZSB=qd | |
186 | c | |
187 | if((ic.ne.0) .and. (x*(1.0d0+4.0d0*mc2q2).lt.1.0d0)) then | |
188 | call WHIT1Q(x,mc2q2,cv,cs) | |
189 | qc = cv/alinv/2.0d0/PI + cs*alstpi | |
190 | qc = qc*x | |
191 | ZCB=qc | |
192 | else | |
193 | qc = 0.0d0 | |
194 | ZCB=qc | |
195 | endif | |
196 | c | |
197 | g = WHIT1G(x,Q2) | |
198 | g = g*x | |
199 | ZGL=g | |
200 | c | |
201 | else | |
202 | c over 100 GeV^2 | |
203 | c | |
204 | c set scale s | |
205 | s= log( log(Q2/LAM52)/ log(Q52IT/LAM52)) | |
206 | prsccf = 1.0d0 | |
207 | alstpi = 6.0d0/23.0d0/ log(Q2/LAM52) | |
208 | s2=s**2 | |
209 | s3=s2*s | |
210 | s4=s2**2 | |
211 | c | |
212 | cccccc WHIT1 quark (O100) | |
213 | c | |
214 | A0val= 3.058000d+00+s*( 2.474000d+00)+s2*( 1.002000d+00) | |
215 | A1val=-2.182000d+00+s*(-4.480000d+00)+s2*(-2.251000d-01) | |
216 | A2val= 1.522000d+00+s*( 4.310000d+00)+s2*( 1.314000d+00) | |
217 | Bval = 5.170000d-01+s*( 4.040000d-02)+s2*(-2.100000d-02) | |
218 | Cval = 1.655000d-01+s*(-2.062000d-02)+s2*( 5.360000d-02) | |
219 | A0sea= 6.250000d-01+s*(-5.890000d-01)+s2*( 4.180000d+00) | |
220 | $ +s3*(-1.206000d+01)+s4*( 1.257000d+01) | |
221 | B0sea=-2.492000d-01+s*(-4.110000d-01)+s2*( 9.660000d-01) | |
222 | $ +s3*(-2.584000d+00)+s4*( 2.670000d+00) | |
223 | BB0sea=2.100000d+00+s*(-5.750000d+00)+s2*( 4.780000d+01) | |
224 | $ +s3*(-1.407000d+02)+s4*( 1.476000d+02) | |
225 | C0sea= 4.780000d+00+s*( 4.860000d+00)+s2*(-4.890000d+01) | |
226 | $ +s3*( 1.477000d+02)+s4*(-1.602000d+02) | |
227 | c | |
228 | qv = 1.0d0/alinv/x* | |
229 | $ (A0val+A1val*x+A2val*x2) * x**Bval * x1**Cval | |
230 | qsea= 1.0d0/alinv/x* | |
231 | $ A0sea * x**(B0sea+BB0sea*x) * x1**C0sea | |
232 | c | |
233 | qu = qv/3.0d0 + qsea/6.0d0 | |
234 | qu = qu*x | |
235 | ZUV=qu | |
236 | ZUB=qu | |
237 | qd = qv/12.0d0 + qsea/6.0d0 | |
238 | qd = qd*x | |
239 | ZDV=qd | |
240 | ZDB=qd | |
241 | ZSB=qd | |
242 | g = WHIT1G(x,Q2) | |
243 | g = g*x | |
244 | ZGL=g | |
245 | c | |
246 | if((ic.ne.0) .and. (x*(1.0d0+4.0d0*mc2q2).lt.1.0d0)) then | |
247 | A0dcv= s*( 1.219000d-01)+s2*( 6.200000d+00) | |
248 | $ +s3*(-2.504000d+01)+s4*( 3.098000d+01) | |
249 | A1dcv= s*( 1.913000d+00)+s2*(-7.690000d+01) | |
250 | $ +s3*( 3.180000d+02)+s4*(-3.920000d+02) | |
251 | A2dcv= s*(-7.160000d+00)+s2*( 2.503000d+02) | |
252 | $ +s3*(-1.062000d+03)+s4*( 1.308000d+03) | |
253 | A3dcv= s*( 3.190000d+00)+s2*(-2.301000d+02) | |
254 | $ +s3*( 1.012000d+03)+s4*(-1.250000d+03) | |
255 | Bdcv = 4.990000d-01+s*( 3.470000d+00)+s2*(-1.526000d+01) | |
256 | $ +s3*( 1.967000d+01) | |
257 | Cdcv = 3.290000d-01+s*( 8.240000d+00)+s2*(-3.800000d+01) | |
258 | $ +s3*( 4.630000d+01) | |
259 | Adcs = s*(-1.815000d-02)+s2*( 2.043000d-03) | |
260 | $ +s3*(-4.130000d-03) | |
261 | B0dcs=-3.086000d-01+s*(-2.565000d-01)+s2*( 9.840000d-02) | |
262 | B1dcs= 1.376000d+00+s*(-4.630000d-01)+s2*( 1.232000d+00) | |
263 | Cdcs = 3.650000d+00+s*( 7.290000d-01)+s2*(-7.570000d+00) | |
264 | $ +s3*( 7.790000d+00) | |
265 | c | |
266 | dcv = 1.0d0/alinv/x* | |
267 | $ (A0dcv+x*A1dcv+x2*A2dcv+x2*x*A3dcv) * x**Bdcv * x1**Cdcv | |
268 | dcs = 1.0d0/alinv/x* | |
269 | $ Adcs * x**(B0dcs+B1dcs*x) * x1**Cdcs | |
270 | c | |
271 | call WHIT1Q(x,mc*mc/Q2,cv,cs) | |
272 | qc = cv/alinv/2.0d0/PI + cs*alstpi + dcs + dcv | |
273 | qc = qc*x | |
274 | ZCB=qc | |
275 | else | |
276 | qc = 0.0d0 | |
277 | ZCB=qc | |
278 | endif | |
279 | endif | |
280 | c | |
281 | return | |
282 | end | |
283 | c------------------------------------------------------- | |
284 | subroutine SFWHI2(ZX,ZQ,ZUV,ZDV,ZUB,ZDB,ZSB,ZCB,ZGL) | |
285 | c------------------------------------------------------- | |
286 | c WHIT2 parton distribution in the photon | |
287 | c | |
288 | c INPUT: integer ic : if ic=0 then qc=0 | |
289 | c else qc is calculated | |
290 | c DOUBLE PRECISION Q2 : energy scale Q^2 (GeV^2) | |
291 | c DOUBLE PRECISION x : energy fraction | |
292 | c | |
293 | c OUTPUT: DOUBLE PRECISION qu : up-quark dist. | |
294 | c DOUBLE PRECISION qd : down- or strange-quark dist. | |
295 | c DOUBLE PRECISION qc : charm-quark dist. | |
296 | c DOUBLE PRECISION g : gluon dist. | |
297 | c------------------------------------------------------- | |
298 | c Modified by M.Tanaka on July 22, 1994. | |
299 | c The bug pointed out by M.Drees is fixed. | |
300 | c------------------------------------------------------- | |
301 | c Modified by I.Watanabe on July 22, 1994. | |
302 | c------------------------------------------------------- | |
303 | implicit none | |
304 | external WHIT2G | |
305 | double precision | |
306 | + ZX,ZQ,ZUV,ZDV,ZUB,ZDB,ZSB,ZCB,ZGL | |
307 | c arg | |
308 | integer ic | |
309 | DOUBLE PRECISION Q2,x | |
310 | DOUBLE PRECISION qu,qd,qc,g | |
311 | c const | |
312 | DOUBLE PRECISION q42it,q52it,lam42,lam52 | |
313 | DOUBLE PRECISION alinv,mc,PI | |
314 | c local | |
315 | DOUBLE PRECISION qv,qsea,cv,cs,dcv,dcs | |
316 | DOUBLE PRECISION A0val,A1val,A2val,Bval,Cval, | |
317 | $ A0sea,B0sea,BB0sea,C0sea | |
318 | DOUBLE PRECISION A0dcv,A1dcv,A2dcv,A3dcv,Bdcv,Cdcv | |
319 | DOUBLE PRECISION Adcs, B0dcs, B1dcs, Cdcs | |
320 | DOUBLE PRECISION x1,x2,mc2q2 | |
321 | DOUBLE PRECISION s,s2,s3,s4,prsccf,alstpi | |
322 | DOUBLE PRECISION WHIT2G | |
323 | c parameters | |
324 | parameter(lam42=0.16d0, lam52=0.091411319d0) | |
325 | parameter(Q42IT=4.0d0, Q52IT=100.0d0) | |
326 | parameter(alinv=137.036d0, mc=1.5d0) | |
327 | parameter(pi=3.14159265358979323846d0) | |
328 | common /scale/ s,s2,s3,s4,prsccf | |
329 | c | |
330 | c begin | |
331 | x=ZX | |
332 | Q2=ZQ*ZQ | |
333 | ic=1 | |
334 | c | |
335 | x1=1.0d0-x | |
336 | x2=x**2 | |
337 | mc2q2=mc**2/Q2 | |
338 | c | |
339 | if(Q2.lt.100.0d0) then | |
340 | c under 100 GeV^2 | |
341 | c | |
342 | c set scale s | |
343 | if(Q2.lt.4.0d0) then | |
344 | cccc for under 4GeV^2 prescription | |
345 | s= 0.0d0 | |
346 | prsccf = log(Q2/LAM42)/ log(Q42IT/LAM42) | |
347 | alstpi = 6.0d0/25.0d0/ log(Q42IT/LAM42) | |
348 | else | |
349 | s= log( log(Q2/LAM42)/ log(Q42IT/LAM42)) | |
350 | prsccf = 1.0d0 | |
351 | alstpi = 6.0d0/25.0d0/ log(Q2/LAM42) | |
352 | endif | |
353 | s2=s**2 | |
354 | s3=s2*s | |
355 | s4=s2**2 | |
356 | c | |
357 | cccccc WHIT2 quark (U100) | |
358 | c | |
359 | A0val= 1.882000d+00+s*( 1.213000d+00)+s2*( 6.970000d-01) | |
360 | A1val= s*(-2.361000d+00)+s2*(-1.136000d+00) | |
361 | A2val= s*( 5.280000d-01)+s2*( 2.406000d+00) | |
362 | Bval= 5.000000d-01+s*( 2.107000d-02)+s2*( 4.130000d-03) | |
363 | Cval= 2.500000d-01+s*(-2.376000d-01)+s2*( 2.018000d-01) | |
364 | $ +s3*(-5.040000d-02) | |
365 | A0sea= 1.237000d+00+s*( 3.390000d+00)+s2*(-1.075000d+01) | |
366 | $ +s3*( 1.246000d+01)+s4*(-5.580000d+00) | |
367 | B0sea=-7.270000d-02+s*( 1.748000d-01)+s2*(-1.392000d+00) | |
368 | $ +s3*( 1.711000d+00)+s4*(-7.960000d-01) | |
369 | BB0sea=4.290000d+00+s*( 1.787000d+01)+s2*(-5.810000d+01) | |
370 | $ +s3*( 8.190000d+01)+s4*(-4.140000d+01) | |
371 | C0sea= 1.434000d+01+s*(-4.490000d+01)+s2*( 1.197000d+02) | |
372 | $ +s3*(-1.585000d+02)+s4*( 7.530000d+01) | |
373 | c | |
374 | qv = prsccf/alinv/x* | |
375 | $ (A0val+A1val*x+A2val*x2) * x**Bval * x1**Cval | |
376 | qsea= prsccf/alinv/x* | |
377 | $ A0sea * x**(B0sea+BB0sea*x) * x1**C0sea | |
378 | c | |
379 | qu = qv/3.0d0 + qsea/6.0d0 | |
380 | qu = qu*x | |
381 | ZUV=qu | |
382 | ZUB=qu | |
383 | qd = qv/12.0d0 + qsea/6.0d0 | |
384 | qd = qd*x | |
385 | ZDV=qd | |
386 | ZDB=qd | |
387 | ZSB=qd | |
388 | c | |
389 | if((ic.ne.0) .and. (x*(1.0d0+4.0d0*mc2q2).lt.1.0d0)) then | |
390 | call WHIT2Q(x,mc2q2,cv,cs) | |
391 | qc = cv/alinv/2.0d0/PI + cs*alstpi | |
392 | qc = qc*x | |
393 | ZCB=qc | |
394 | else | |
395 | qc = 0.0d0 | |
396 | ZCB=qc | |
397 | endif | |
398 | c | |
399 | g = WHIT2G(x,Q2) | |
400 | g = g*x | |
401 | ZGL=g | |
402 | c | |
403 | else | |
404 | c over 100 GeV^2 | |
405 | c | |
406 | c set scale s | |
407 | s= log( log(Q2/LAM52)/ log(Q52IT/LAM52)) | |
408 | prsccf = 1.0d0 | |
409 | alstpi = 6.0d0/23.0d0/ log(Q2/LAM52) | |
410 | s2=s**2 | |
411 | s3=s2*s | |
412 | s4=s2**2 | |
413 | c | |
414 | cccccc WHIT2 quark (O100) | |
415 | c | |
416 | A0val= 3.058000d+00+s*( 2.474000d+00)+s2*( 1.002000d+00) | |
417 | A1val=-2.182000d+00+s*(-4.480000d+00)+s2*(-2.259000d-01) | |
418 | A2val= 1.522000d+00+s*( 4.300000d+00)+s2*( 1.315000d+00) | |
419 | Bval = 5.170000d-01+s*( 4.030000d-02)+s2*(-2.098000d-02) | |
420 | Cval = 1.655000d-01+s*(-2.063000d-02)+s2*( 5.370000d-02) | |
421 | A0sea= 1.287000d+00+s*(-2.069000d+00)+s2*( 1.157000d+01) | |
422 | $ +s3*(-3.570000d+01)+s4*( 3.740000d+01) | |
423 | B0sea=-2.340000d-01+s*(-4.430000d-01)+s2*( 1.235000d+00) | |
424 | $ +s3*(-3.720000d+00)+s4*( 3.840000d+00) | |
425 | BB0sea=6.460000d+00+s*(-1.048000d+01)+s2*( 8.980000d+01) | |
426 | $ +s3*(-2.847000d+02)+s4*( 2.998000d+02) | |
427 | C0sea= 5.350000d+00+s*( 1.011000d+01)+s2*(-1.337000d+02) | |
428 | $ +s3*( 4.270000d+02)+s4*(-4.570000d+02) | |
429 | c | |
430 | qv = 1.0d0/alinv/x* | |
431 | $ (A0val+A1val*x+A2val*x2) * x**Bval * x1**Cval | |
432 | qsea= 1.0d0/alinv/x* | |
433 | $ A0sea * x**(B0sea+BB0sea*x) * x1**C0sea | |
434 | c | |
435 | qu = qv/3.0d0 + qsea/6.0d0 | |
436 | qu = qu*x | |
437 | ZUV=qu | |
438 | ZUB=qu | |
439 | qd = qv/12.0d0 + qsea/6.0d0 | |
440 | qd = qd*x | |
441 | ZDV=qd | |
442 | ZDB=qd | |
443 | ZSB=qd | |
444 | g = WHIT2G(x,Q2) | |
445 | g = g*x | |
446 | ZGL=g | |
447 | c | |
448 | if((ic.ne.0) .and. (x*(1.0d0+4.0d0*mc2q2).lt.1.0d0)) then | |
449 | A0dcv= s*( 1.219000d-01)+s2*( 6.200000d+00) | |
450 | $ +s3*(-2.504000d+01)+s4*( 3.098000d+01) | |
451 | A1dcv= s*( 1.913000d+00)+s2*(-7.690000d+01) | |
452 | $ +s3*( 3.180000d+02)+s4*(-3.920000d+02) | |
453 | A2dcv= s*(-7.160000d+00)+s2*( 2.503000d+02) | |
454 | $ +s3*(-1.062000d+03)+s4*( 1.308000d+03) | |
455 | A3dcv= s*( 3.190000d+00)+s2*(-2.301000d+02) | |
456 | $ +s3*( 1.012000d+03)+s4*(-1.250000d+03) | |
457 | Bdcv = 4.990000d-01+s*( 3.470000d+00)+s2*(-1.526000d+01) | |
458 | $ +s3*( 1.967000d+01) | |
459 | Cdcv = 3.290000d-01+s*( 8.240000d+00)+s2*(-3.800000d+01) | |
460 | $ +s3*( 4.630000d+01) | |
461 | Adcs = s*(-2.786000d-02)+s2*( 3.490000d-02) | |
462 | $ +s3*(-2.223000d-02) | |
463 | B0dcs=-3.141000d-01+s*(-4.250000d-01)+s2*( 1.564000d-01) | |
464 | B1dcs= 4.720000d+00+s*(-5.480000d+00)+s2*( 2.686000d+00) | |
465 | Cdcs = 2.961000d+00+s*( 7.760000d-01)+s2*(-8.280000d+00) | |
466 | $ +s3*( 9.780000d+00) | |
467 | c | |
468 | dcv = 1.0d0/alinv/x* | |
469 | $ (A0dcv+x*A1dcv+x2*A2dcv+x2*x*A3dcv) * x**Bdcv * x1**Cdcv | |
470 | dcs = 1.0d0/alinv/x* | |
471 | $ Adcs * x**(B0dcs+B1dcs*x) * x1**Cdcs | |
472 | c | |
473 | call WHIT2Q(x,mc*mc/Q2,cv,cs) | |
474 | qc = cv/alinv/2.0d0/PI + cs*alstpi + dcs + dcv | |
475 | qc = qc*x | |
476 | ZCB=qc | |
477 | else | |
478 | qc = 0.0d0 | |
479 | ZCB=qc | |
480 | endif | |
481 | endif | |
482 | c | |
483 | return | |
484 | end | |
485 | c------------------------------------------------------- | |
486 | subroutine SFWHI3(ZX,ZQ,ZUV,ZDV,ZUB,ZDB,ZSB,ZCB,ZGL) | |
487 | c------------------------------------------------------- | |
488 | c WHIT3 parton distribution in the photon | |
489 | c | |
490 | c INPUT: integer ic : if ic=0 then qc=0 | |
491 | c else qc is calculated | |
492 | c DOUBLE PRECISION Q2 : energy scale Q^2 (GeV^2) | |
493 | c DOUBLE PRECISION x : energy fraction | |
494 | c | |
495 | c OUTPUT: DOUBLE PRECISION qu : up-quark dist. | |
496 | c DOUBLE PRECISION qd : down- or strange-quark dist. | |
497 | c DOUBLE PRECISION qc : charm-quark dist. | |
498 | c DOUBLE PRECISION g : gluon dist. | |
499 | c------------------------------------------------------- | |
500 | c Modified by M.Tanaka on July 22, 1994. | |
501 | c The bug pointed out by M.Drees is fixed. | |
502 | c------------------------------------------------------- | |
503 | c Modified by I.Watanabe on July 22, 1994. | |
504 | c------------------------------------------------------- | |
505 | implicit none | |
506 | external whit3g | |
507 | double precision | |
508 | + ZX,ZQ,ZUV,ZDV,ZUB,ZDB,ZSB,ZCB,ZGL | |
509 | c arg | |
510 | integer ic | |
511 | DOUBLE PRECISION Q2,x | |
512 | DOUBLE PRECISION qu,qd,qc,g | |
513 | c const | |
514 | DOUBLE PRECISION q42it,q52it,lam42,lam52 | |
515 | DOUBLE PRECISION alinv,mc,PI | |
516 | c local | |
517 | DOUBLE PRECISION qv,qsea,cv,cs,dcv,dcs | |
518 | DOUBLE PRECISION A0val,A1val,A2val,Bval,Cval, | |
519 | $ A0sea,B0sea,BB0sea,C0sea | |
520 | DOUBLE PRECISION A0dcv,A1dcv,A2dcv,A3dcv,Bdcv,Cdcv | |
521 | DOUBLE PRECISION Adcs, B0dcs, B1dcs, Cdcs | |
522 | DOUBLE PRECISION x1,x2,mc2q2 | |
523 | DOUBLE PRECISION s,s2,s3,s4,prsccf,alstpi | |
524 | DOUBLE PRECISION WHIT3g | |
525 | c parameters | |
526 | parameter(lam42=0.16d0, lam52=0.091411319d0) | |
527 | parameter(Q42IT=4.0d0, Q52IT=100.0d0) | |
528 | parameter(alinv=137.036d0, mc=1.5d0) | |
529 | parameter(pi=3.14159265358979323846d0) | |
530 | common /scale/ s,s2,s3,s4,prsccf | |
531 | c | |
532 | c begin | |
533 | x=ZX | |
534 | Q2=ZQ*ZQ | |
535 | ic=1 | |
536 | c | |
537 | x1=1.0d0-x | |
538 | x2=x**2 | |
539 | mc2q2=mc**2/Q2 | |
540 | c | |
541 | if(Q2.lt.100.0d0) then | |
542 | c under 100 GeV^2 | |
543 | c | |
544 | c set scale s | |
545 | if(Q2.lt.4.0d0) then | |
546 | cccc for under 4GeV^2 prescription | |
547 | s= 0.0d0 | |
548 | prsccf = log(Q2/LAM42)/ log(Q42IT/LAM42) | |
549 | alstpi = 6.0d0/25.0d0/ log(Q42IT/LAM42) | |
550 | else | |
551 | s= log( log(Q2/LAM42)/ log(Q42IT/LAM42)) | |
552 | prsccf = 1.0d0 | |
553 | alstpi = 6.0d0/25.0d0/ log(Q2/LAM42) | |
554 | endif | |
555 | s2=s**2 | |
556 | s3=s2*s | |
557 | s4=s2**2 | |
558 | c | |
559 | cccccc WHIT3 quark (U100) | |
560 | c | |
561 | A0val= 1.882000d+00+s*( 1.213000d+00)+s2*( 6.970000d-01) | |
562 | A1val= s*(-2.361000d+00)+s2*(-1.136000d+00) | |
563 | A2val= s*( 5.280000d-01)+s2*( 2.406000d+00) | |
564 | Bval = 5.000000d-01+s*( 2.107000d-02)+s2*( 4.130000d-03) | |
565 | Cval = 2.500000d-01+s*(-2.376000d-01)+s2*( 2.018000d-01) | |
566 | $ +s3*(-5.040000d-02) | |
567 | A0sea= 1.587000d+00+s*( 5.050000d+00)+s2*(-1.126000d+01) | |
568 | $ +s3*( 7.560000d+00)+s4*(-1.471000d+00) | |
569 | B0sea=-1.006000d-01+s*( 2.259000d-01)+s2*(-1.195000d+00) | |
570 | $ +s3*( 1.175000d+00)+s4*(-4.460000d-01) | |
571 | BB0sea=5.730000d+00+s*( 2.564000d+01)+s2*(-5.870000d+01) | |
572 | $ +s3*( 6.320000d+01)+s4*(-2.577000d+01) | |
573 | C0sea= 2.136000d+01+s*(-7.290000d+01)+s2*( 1.532000d+02) | |
574 | $ +s3*(-1.679000d+02)+s4*( 6.740000d+01) | |
575 | c | |
576 | qv = prsccf/alinv/x* | |
577 | $ (A0val+A1val*x+A2val*x2) * x**Bval * x1**Cval | |
578 | qsea= prsccf/alinv/x* | |
579 | $ A0sea * x**(B0sea+BB0sea*x) * x1**C0sea | |
580 | c | |
581 | qu = qv/3.0d0 + qsea/6.0d0 | |
582 | qu = qu*x | |
583 | ZUV=qu | |
584 | ZUB=qu | |
585 | qd = qv/12.0d0 + qsea/6.0d0 | |
586 | qd = qd*x | |
587 | ZDV=qd | |
588 | ZDB=qd | |
589 | ZSB=qd | |
590 | c | |
591 | if((ic.ne.0) .and. (x*(1.0d0+4.0d0*mc2q2).lt.1.0d0)) then | |
592 | call WHIT3Q(x,mc2q2,cv,cs) | |
593 | qc = cv/alinv/2.0d0/PI + cs*alstpi | |
594 | qc = qc*x | |
595 | ZCB=qc | |
596 | else | |
597 | qc = 0.0d0 | |
598 | ZCB=qc | |
599 | endif | |
600 | c | |
601 | g = WHIT3G(x,Q2) | |
602 | g = g*x | |
603 | ZGL=g | |
604 | c | |
605 | else | |
606 | c over 100 GeV^2 | |
607 | c | |
608 | c set scale s | |
609 | s= log( log(Q2/LAM52)/ log(Q52IT/LAM52)) | |
610 | prsccf = 1.0d0 | |
611 | alstpi = 6.0d0/23.0d0/ log(Q2/LAM52) | |
612 | s2=s**2 | |
613 | s3=s2*s | |
614 | s4=s2**2 | |
615 | c | |
616 | cccccc WHIT3 quark (O100) | |
617 | c | |
618 | A0val= 3.058000d+00+s*( 2.474000d+00)+s2*( 1.002000d+00) | |
619 | A1val=-2.182000d+00+s*(-4.480000d+00)+s2*(-2.264000d-01) | |
620 | A2val= 1.522000d+00+s*( 4.300000d+00)+s2*( 1.315000d+00) | |
621 | Bval = 5.170000d-01+s*( 4.030000d-02)+s2*(-2.097000d-02) | |
622 | Cval = 1.655000d-01+s*(-2.064000d-02)+s2*( 5.370000d-02) | |
623 | A0sea= 1.850000d+00+s*(-3.670000d+00)+s2*( 2.714000d+01) | |
624 | $ +s3*(-1.066000d+02)+s4*( 1.309000d+02) | |
625 | B0sea=-2.299000d-01+s*(-4.970000d-01)+s2*( 2.464000d+00) | |
626 | $ +s3*(-9.950000d+00)+s4*( 1.232000d+01) | |
627 | BB0sea=1.042000d+01+s*(-1.074000d+01)+s2*( 1.327000d+02) | |
628 | $ +s3*(-5.390000d+02)+s4*( 6.560000d+02) | |
629 | C0sea= 4.070000d+00+s*( 4.110000d+00)+s2*(-1.719000d+02) | |
630 | $ +s3*( 7.070000d+02)+s4*(-8.590000d+02) | |
631 | c | |
632 | qv = 1.0d0/alinv/x* | |
633 | $ (A0val+A1val*x+A2val*x2) * x**Bval * x1**Cval | |
634 | qsea= 1.0d0/alinv/x* | |
635 | $ A0sea * x**(B0sea+BB0sea*x) * x1**C0sea | |
636 | c | |
637 | qu = qv/3.0d0 + qsea/6.0d0 | |
638 | qu = qu*x | |
639 | ZUV=qu | |
640 | ZUB=qu | |
641 | qd = qv/12.0d0 + qsea/6.0d0 | |
642 | qd = qd*x | |
643 | ZDV=qd | |
644 | ZDB=qd | |
645 | ZSB=qd | |
646 | g = WHIT3G(x,Q2) | |
647 | g = g*x | |
648 | ZGL=g | |
649 | c | |
650 | if((ic.ne.0) .and. (x*(1.0d0+4.0d0*mc2q2).lt.1.0d0)) then | |
651 | A0dcv= s*( 1.219000d-01)+s2*( 6.200000d+00) | |
652 | $ +s3*(-2.504000d+01)+s4*( 3.098000d+01) | |
653 | A1dcv= s*( 1.913000d+00)+s2*(-7.690000d+01) | |
654 | $ +s3*( 3.180000d+02)+s4*(-3.920000d+02) | |
655 | A2dcv= s*(-7.160000d+00)+s2*( 2.503000d+02) | |
656 | $ +s3*(-1.062000d+03)+s4*( 1.308000d+03) | |
657 | A3dcv= s*( 3.190000d+00)+s2*(-2.301000d+02) | |
658 | $ +s3*( 1.012000d+03)+s4*(-1.250000d+03) | |
659 | Bdcv = 4.990000d-01+s*( 3.470000d+00)+s2*(-1.526000d+01) | |
660 | $ +s3*( 1.967000d+01) | |
661 | Cdcv = 3.290000d-01+s*( 8.240000d+00)+s2*(-3.800000d+01) | |
662 | $ +s3*( 4.630000d+01) | |
663 | Adcs = s*(-1.948000d-02)+s2*( 2.861000d-02) | |
664 | $ +s3*(-2.036000d-02) | |
665 | B0dcs=-4.130000d-01+s*(-4.390000d-01)+s2*( 1.810000d-01) | |
666 | B1dcs= 5.190000d+00+s*(-7.400000d+00)+s2*( 3.400000d+00) | |
667 | Cdcs = 2.359000d+00+s*( 9.770000d-01)+s2*(-7.730000d+00) | |
668 | $ +s3*( 9.480000d+00) | |
669 | c | |
670 | dcv = 1.0d0/alinv/x* | |
671 | $ (A0dcv+x*A1dcv+x2*A2dcv+x2*x*A3dcv) * x**Bdcv * x1**Cdcv | |
672 | dcs = 1.0d0/alinv/x* | |
673 | $ Adcs * x**(B0dcs+B1dcs*x) * x1**Cdcs | |
674 | c | |
675 | call WHIT3Q(x,mc*mc/Q2,cv,cs) | |
676 | qc = cv/alinv/2.0d0/PI + cs*alstpi + dcs + dcv | |
677 | qc = qc*x | |
678 | ZCB=qc | |
679 | else | |
680 | qc = 0.0d0 | |
681 | ZCB=qc | |
682 | endif | |
683 | endif | |
684 | c | |
685 | return | |
686 | end | |
687 | c------------------------------------------------------- | |
688 | subroutine SFWHI4(ZX,ZQ,ZUV,ZDV,ZUB,ZDB,ZSB,ZCB,ZGL) | |
689 | c------------------------------------------------------- | |
690 | c WHIT4 parton distribution in the photon | |
691 | c | |
692 | c INPUT: integer ic : if ic=0 then qc=0 | |
693 | c else qc is calculated | |
694 | c DOUBLE PRECISION Q2 : energy scale Q^2 (GeV^2) | |
695 | c DOUBLE PRECISION x : energy fraction | |
696 | c | |
697 | c OUTPUT: DOUBLE PRECISION qu : up-quark dist. | |
698 | c DOUBLE PRECISION qd : down- or strange-quark dist. | |
699 | c DOUBLE PRECISION qc : charm-quark dist. | |
700 | c DOUBLE PRECISION g : gluon dist. | |
701 | c------------------------------------------------------- | |
702 | c Modified by M.Tanaka on July 22, 1994. | |
703 | c The bug pointed out by M.Drees is fixed. | |
704 | c------------------------------------------------------- | |
705 | c Modified by I.Watanabe on July 22, 1994. | |
706 | c------------------------------------------------------- | |
707 | implicit none | |
708 | external WHIT4G | |
709 | double precision | |
710 | + ZX,ZQ,ZUV,ZDV,ZUB,ZDB,ZSB,ZCB,ZGL | |
711 | c arg | |
712 | integer ic | |
713 | DOUBLE PRECISION Q2,x | |
714 | DOUBLE PRECISION qu,qd,qc,g | |
715 | c const | |
716 | DOUBLE PRECISION q42it,q52it,lam42,lam52 | |
717 | DOUBLE PRECISION alinv,mc,PI | |
718 | c local | |
719 | DOUBLE PRECISION qv,qsea,cv,cs,dcv,dcs | |
720 | DOUBLE PRECISION A0val,A1val,A2val,Bval,Cval, | |
721 | $ A0sea,B0sea,BB0sea,C0sea | |
722 | DOUBLE PRECISION A0dcv,A1dcv,A2dcv,A3dcv,Bdcv,Cdcv | |
723 | DOUBLE PRECISION Adcs, B0dcs, B1dcs, Cdcs | |
724 | DOUBLE PRECISION x1,x2,mc2q2 | |
725 | DOUBLE PRECISION s,s2,s3,s4,prsccf,alstpi | |
726 | DOUBLE PRECISION WHIT4G | |
727 | c parameters | |
728 | parameter(lam42=0.16d0, lam52=0.091411319d0) | |
729 | parameter(Q42IT=4.0d0, Q52IT=100.0d0) | |
730 | parameter(alinv=137.036d0, mc=1.5d0) | |
731 | parameter(pi=3.14159265358979323846d0) | |
732 | common /scale/ s,s2,s3,s4,prsccf | |
733 | c | |
734 | c begin | |
735 | x=ZX | |
736 | Q2=ZQ*ZQ | |
737 | ic=1 | |
738 | c | |
739 | x1=1.0d0-x | |
740 | x2=x**2 | |
741 | mc2q2=mc**2/Q2 | |
742 | c | |
743 | if(Q2.lt.100.0d0) then | |
744 | c under 100 GeV^2 | |
745 | c | |
746 | c set scale s | |
747 | if(Q2.lt.4.0d0) then | |
748 | cccc for under 4GeV^2 prescription | |
749 | s= 0.0d0 | |
750 | prsccf = log(Q2/LAM42)/ log(Q42IT/LAM42) | |
751 | alstpi = 6.0d0/25.0d0/ log(Q42IT/LAM42) | |
752 | else | |
753 | s= log( log(Q2/LAM42)/ log(Q42IT/LAM42)) | |
754 | prsccf = 1.0d0 | |
755 | alstpi = 6.0d0/25.0d0/ log(Q2/LAM42) | |
756 | endif | |
757 | s2=s**2 | |
758 | s3=s2*s | |
759 | s4=s2**2 | |
760 | c | |
761 | cccccc WHIT4 quark (U100) | |
762 | c | |
763 | A0val= 2.540000d+00+s*( 2.000000d+00)+s2*( 7.180000d-01) | |
764 | A1val= 6.230000d-02+s*(-7.010000d+00)+s2*( 1.251000d-01) | |
765 | A2val=-1.642000d-01+s*(-4.360000d-01)+s2*( 1.048000d+01) | |
766 | $ +s3*(-5.200000d+00) | |
767 | Bval = 6.990000d-01+s*(-2.796000d-02)+s2*(-3.650000d-03) | |
768 | Cval = 4.420000d-01+s*(-1.255000d+00)+s2*( 1.941000d+00) | |
769 | $ +s3*(-9.950000d-01) | |
770 | A0sea= 1.308000d+00+s*( 2.315000d+00)+s2*(-7.880000d+00) | |
771 | $ +s3*( 8.260000d+00)+s4*(-3.004000d+00) | |
772 | B0sea=-3.730000d-02+s*( 5.630000d-02)+s2*(-1.133000d+00) | |
773 | $ +s3*( 1.185000d+00)+s4*(-4.180000d-01) | |
774 | BB0sea=2.103000d+00+s*( 4.850000d+00)+s2*(-1.781000d+01) | |
775 | $ +s3*( 2.062000d+01)+s4*(-7.940000d+00) | |
776 | C0sea= 7.000000d+00+s*(-1.017000d+01)+s2*( 2.600000d+01) | |
777 | $ +s3*(-2.960000d+01)+s4*( 1.227000d+01) | |
778 | c | |
779 | qv = prsccf/alinv/x* | |
780 | $ (A0val+A1val*x+A2val*x2) * x**Bval * x1**Cval | |
781 | qsea= prsccf/alinv/x* | |
782 | $ A0sea * x**(B0sea+BB0sea*x) * x1**C0sea | |
783 | c | |
784 | qu = qv/3.0d0 + qsea/6.0d0 | |
785 | qu = qu*x | |
786 | ZUV=qu | |
787 | ZUB=qu | |
788 | qd = qv/12.0d0 + qsea/6.0d0 | |
789 | qd = qd*x | |
790 | ZDV=qd | |
791 | ZDB=qd | |
792 | ZSB=qd | |
793 | c | |
794 | if((ic.ne.0) .and. (x*(1.0d0+4.0d0*mc2q2).lt.1.0d0)) then | |
795 | call WHIT4Q(x,mc2q2,cv,cs) | |
796 | qc = cv/alinv/2.0d0/PI + cs*alstpi | |
797 | qc = qc*x | |
798 | ZCB=qc | |
799 | else | |
800 | qc = 0.0d0 | |
801 | ZCB=qc | |
802 | endif | |
803 | c | |
804 | g = WHIT4G(x,Q2) | |
805 | g = g*x | |
806 | ZGL=g | |
807 | c | |
808 | else | |
809 | c over 100 GeV^2 | |
810 | c | |
811 | c set scale s | |
812 | s= log( log(Q2/LAM52)/ log(Q52IT/LAM52)) | |
813 | prsccf = 1.0d0 | |
814 | alstpi = 6.0d0/23.0d0/ log(Q2/LAM52) | |
815 | s2=s**2 | |
816 | s3=s2*s | |
817 | s4=s2**2 | |
818 | c | |
819 | cccccc WHIT4 quark (O100) | |
820 | c | |
821 | A0val= 4.270000d+00+s*( 3.096000d+00)+s2*( 1.619000d+00) | |
822 | A1val=-4.740000d+00+s*(-6.900000d+00)+s2*(-2.430000d+00) | |
823 | A2val= 2.837000d+00+s*( 6.470000d+00)+s2*( 4.090000d+00) | |
824 | Bval = 6.780000d-01+s*(-3.940000d-02)+s2*( 1.756000d-02) | |
825 | Cval = 1.728000d-01+s*(-2.479000d-02)+s2*( 1.446000d-01) | |
826 | A0sea= 1.188000d+00+s*(-1.396000d+00)+s2*( 8.710000d+00) | |
827 | $ +s3*(-2.542000d+01)+s4*( 2.492000d+01) | |
828 | B0sea=-2.448000d-01+s*(-4.190000d-01)+s2*( 1.007000d+00) | |
829 | $ +s3*(-2.689000d+00)+s4*( 2.517000d+00) | |
830 | BB0sea=1.942000d+00+s*(-6.040000d+00)+s2*( 5.030000d+01) | |
831 | $ +s3*(-1.478000d+02)+s4*( 1.481000d+02) | |
832 | C0sea= 5.420000d+00+s*( 6.110000d+00)+s2*(-5.380000d+01) | |
833 | $ +s3*( 1.632000d+02)+s4*(-1.716000d+02) | |
834 | c | |
835 | qv = 1.0d0/alinv/x* | |
836 | $ (A0val+A1val*x+A2val*x2) * x**Bval * x1**Cval | |
837 | qsea= 1.0d0/alinv/x* | |
838 | $ A0sea * x**(B0sea+BB0sea*x) * x1**C0sea | |
839 | c | |
840 | qu = qv/3.0d0 + qsea/6.0d0 | |
841 | qu = qu*x | |
842 | ZUV=qu | |
843 | ZUB=qu | |
844 | qd = qv/12.0d0 + qsea/6.0d0 | |
845 | qd = qd*x | |
846 | ZDV=qd | |
847 | ZDB=qd | |
848 | ZSB=qd | |
849 | g = WHIT4G(x,Q2) | |
850 | g = g*x | |
851 | ZGL=g | |
852 | c | |
853 | if((ic.ne.0) .and. (x*(1.0d0+4.0d0*mc2q2).lt.1.0d0)) then | |
854 | A0dcv= s*( 1.219000d-01)+s2*( 6.200000d+00) | |
855 | $ +s3*(-2.504000d+01)+s4*( 3.098000d+01) | |
856 | A1dcv= s*( 1.913000d+00)+s2*(-7.690000d+01) | |
857 | $ +s3*( 3.180000d+02)+s4*(-3.920000d+02) | |
858 | A2dcv= s*(-7.160000d+00)+s2*( 2.503000d+02) | |
859 | $ +s3*(-1.062000d+03)+s4*( 1.308000d+03) | |
860 | A3dcv= s*( 3.190000d+00)+s2*(-2.301000d+02) | |
861 | $ +s3*( 1.012000d+03)+s4*(-1.250000d+03) | |
862 | Bdcv = 4.990000d-01+s*( 3.470000d+00)+s2*(-1.526000d+01) | |
863 | $ +s3*( 1.967000d+01) | |
864 | Cdcv = 3.290000d-01+s*( 8.240000d+00)+s2*(-3.800000d+01) | |
865 | $ +s3*( 4.630000d+01) | |
866 | Adcs = s*(-2.821000d-02)+s2*(-2.649000d-04) | |
867 | $ +s3*( 7.040000d-03) | |
868 | B0dcs=-3.270000d-01+s*(-2.298000d-01)+s2*( 3.500000d-02) | |
869 | B1dcs= 1.254000d+00+s*( 8.780000d-01)+s2*( 2.086000d-01) | |
870 | Cdcs = 4.170000d+00+s*( 6.400000d-01)+s2*(-7.630000d+00) | |
871 | $ +s3*( 7.170000d+00) | |
872 | c | |
873 | dcv = 1.0d0/alinv/x* | |
874 | $ (A0dcv+x*A1dcv+x2*A2dcv+x2*x*A3dcv) * x**Bdcv * x1**Cdcv | |
875 | dcs = 1.0d0/alinv/x* | |
876 | $ Adcs * x**(B0dcs+B1dcs*x) * x1**Cdcs | |
877 | c | |
878 | call WHIT4Q(x,mc*mc/Q2,cv,cs) | |
879 | qc = cv/alinv/2.0d0/PI + cs*alstpi + dcs + dcv | |
880 | qc = qc*x | |
881 | ZCB=qc | |
882 | else | |
883 | qc = 0.0d0 | |
884 | ZCB=qc | |
885 | endif | |
886 | endif | |
887 | c | |
888 | return | |
889 | end | |
890 | c------------------------------------------------------- | |
891 | subroutine SFWHI5(ZX,ZQ,ZUV,ZDV,ZUB,ZDB,ZSB,ZCB,ZGL) | |
892 | c------------------------------------------------------- | |
893 | c WHIT5 parton distribution in the photon | |
894 | c | |
895 | c INPUT: integer ic : if ic=0 then qc=0 | |
896 | c else qc is calculated | |
897 | c DOUBLE PRECISION Q2 : energy scale Q^2 (GeV^2) | |
898 | c DOUBLE PRECISION x : energy fraction | |
899 | c | |
900 | c OUTPUT: DOUBLE PRECISION qu : up-quark dist. | |
901 | c DOUBLE PRECISION qd : down- or strange-quark dist. | |
902 | c DOUBLE PRECISION qc : charm-quark dist. | |
903 | c DOUBLE PRECISION g : gluon dist. | |
904 | c------------------------------------------------------- | |
905 | c Modified by M.Tanaka on July 22, 1994. | |
906 | c The bug pointed out by M.Drees is fixed. | |
907 | c------------------------------------------------------- | |
908 | c Modified by I.Watanabe on July 22, 1994. | |
909 | c------------------------------------------------------- | |
910 | implicit none | |
911 | external WHIT5G | |
912 | double precision | |
913 | + ZX,ZQ,ZUV,ZDV,ZUB,ZDB,ZSB,ZCB,ZGL | |
914 | c arg | |
915 | integer ic | |
916 | DOUBLE PRECISION Q2,x | |
917 | DOUBLE PRECISION qu,qd,qc,g | |
918 | c const | |
919 | DOUBLE PRECISION q42it,q52it,lam42,lam52 | |
920 | DOUBLE PRECISION alinv,mc,PI | |
921 | c local | |
922 | DOUBLE PRECISION qv,qsea,cv,cs,dcv,dcs | |
923 | DOUBLE PRECISION A0val,A1val,A2val,Bval,Cval, | |
924 | $ A0sea,B0sea,BB0sea,C0sea | |
925 | DOUBLE PRECISION A0dcv,A1dcv,A2dcv,A3dcv,Bdcv,Cdcv | |
926 | DOUBLE PRECISION Adcs, B0dcs, B1dcs, Cdcs | |
927 | DOUBLE PRECISION x1,x2,mc2q2 | |
928 | DOUBLE PRECISION s,s2,s3,s4,prsccf,alstpi | |
929 | DOUBLE PRECISION WHIT5G | |
930 | c parameters | |
931 | parameter(lam42=0.16d0, lam52=0.091411319d0) | |
932 | parameter(Q42IT=4.0d0, Q52IT=100.0d0) | |
933 | parameter(alinv=137.036d0, mc=1.5d0) | |
934 | parameter(pi=3.14159265358979323846d0) | |
935 | common /scale/ s,s2,s3,s4,prsccf | |
936 | c | |
937 | c begin | |
938 | x=ZX | |
939 | Q2=ZQ*ZQ | |
940 | ic=1 | |
941 | c | |
942 | x1=1.0d0-x | |
943 | x2=x**2 | |
944 | mc2q2=mc**2/Q2 | |
945 | c | |
946 | if(Q2.lt.100.0d0) then | |
947 | c under 100 GeV^2 | |
948 | c | |
949 | c set scale s | |
950 | if(Q2.lt.4.0d0) then | |
951 | cccc for under 4GeV^2 prescription | |
952 | s= 0.0d0 | |
953 | prsccf = log(Q2/LAM42)/ log(Q42IT/LAM42) | |
954 | alstpi = 6.0d0/25.0d0/ log(Q42IT/LAM42) | |
955 | else | |
956 | s= log( log(Q2/LAM42)/ log(Q42IT/LAM42)) | |
957 | prsccf = 1.0d0 | |
958 | alstpi = 6.0d0/25.0d0/ log(Q2/LAM42) | |
959 | endif | |
960 | s2=s**2 | |
961 | s3=s2*s | |
962 | s4=s2**2 | |
963 | c | |
964 | cccccc WHIT5 quark (U100) | |
965 | c | |
966 | A0val= 2.540000d+00+s*( 2.000000d+00)+s2*( 7.180000d-01) | |
967 | A1val= 6.230000d-02+s*(-7.010000d+00)+s2*( 1.251000d-01) | |
968 | A2val=-1.642000d-01+s*(-4.360000d-01)+s2*( 1.048000d+01) | |
969 | $ +s3*(-5.200000d+00) | |
970 | Bval = 6.990000d-01+s*(-2.796000d-02)+s2*(-3.650000d-03) | |
971 | Cval = 4.420000d-01+s*(-1.255000d+00)+s2*( 1.941000d+00) | |
972 | $ +s3*(-9.950000d-01) | |
973 | A0sea= 2.227000d+00+s*( 5.720000d+00)+s2*(-1.295000d+01) | |
974 | $ +s3*( 7.220000d+00)+s4*(-2.514000d-01) | |
975 | B0sea=-8.810000d-02+s*( 1.465000d-01)+s2*(-9.750000d-01) | |
976 | $ +s3*( 7.820000d-01)+s4*(-2.074000d-01) | |
977 | BB0sea=3.370000d+00+s*( 1.416000d+01)+s2*(-3.150000d+01) | |
978 | $ +s3*( 2.789000d+01)+s4*(-8.710000d+00) | |
979 | C0sea= 1.581000d+01+s*(-3.630000d+01)+s2*( 7.710000d+01) | |
980 | $ +s3*(-7.810000d+01)+s4*( 2.948000d+01) | |
981 | c | |
982 | qv = prsccf/alinv/x* | |
983 | $ (A0val+A1val*x+A2val*x2) * x**Bval * x1**Cval | |
984 | qsea= prsccf/alinv/x* | |
985 | $ A0sea * x**(B0sea+BB0sea*x) * x1**C0sea | |
986 | c | |
987 | qu = qv/3.0d0 + qsea/6.0d0 | |
988 | qu = qu*x | |
989 | ZUV=qu | |
990 | ZUB=qu | |
991 | qd = qv/12.0d0 + qsea/6.0d0 | |
992 | qd = qd*x | |
993 | ZDV=qd | |
994 | ZDB=qd | |
995 | ZSB=qd | |
996 | c | |
997 | if((ic.ne.0) .and. (x*(1.0d0+4.0d0*mc2q2).lt.1.0d0)) then | |
998 | call WHIT5Q(x,mc2q2,cv,cs) | |
999 | qc = cv/alinv/2.0d0/PI + cs*alstpi | |
1000 | qc = qc*x | |
1001 | ZCB=qc | |
1002 | else | |
1003 | qc = 0.0d0 | |
1004 | ZCB=qc | |
1005 | endif | |
1006 | c | |
1007 | g = WHIT5G(x,Q2) | |
1008 | g = g*x | |
1009 | ZGL=g | |
1010 | c | |
1011 | else | |
1012 | c over 100 GeV^2 | |
1013 | c | |
1014 | c set scale s | |
1015 | s= log( log(Q2/LAM52)/ log(Q52IT/LAM52)) | |
1016 | prsccf = 1.0d0 | |
1017 | alstpi = 6.0d0/23.0d0/ log(Q2/LAM52) | |
1018 | s2=s**2 | |
1019 | s3=s2*s | |
1020 | s4=s2**2 | |
1021 | c | |
1022 | cccccc WHIT5 quark (O100) | |
1023 | c | |
1024 | A0val= 4.270000d+00+s*( 3.096000d+00)+s2*( 1.617000d+00) | |
1025 | A1val=-4.740000d+00+s*(-6.900000d+00)+s2*(-2.417000d+00) | |
1026 | A2val= 2.837000d+00+s*( 6.470000d+00)+s2*( 4.070000d+00) | |
1027 | Bval = 6.780000d-01+s*(-3.940000d-02)+s2*( 1.750000d-02) | |
1028 | Cval = 1.728000d-01+s*(-2.457000d-02)+s2*( 1.440000d-01) | |
1029 | A0sea= 2.318000d+00+s*(-3.760000d+00)+s2*( 2.026000d+01) | |
1030 | $ +s3*(-5.950000d+01)+s4*( 5.900000d+01) | |
1031 | B0sea=-2.425000d-01+s*(-4.360000d-01)+s2*( 1.241000d+00) | |
1032 | $ +s3*(-3.510000d+00)+s4*( 3.360000d+00) | |
1033 | BB0sea=5.330000d+00+s*(-8.680000d+00)+s2*( 7.420000d+01) | |
1034 | $ +s3*(-2.070000d+02)+s4*( 1.967000d+02) | |
1035 | C0sea= 8.480000d+00+s*( 9.310000d+00)+s2*(-1.041000d+02) | |
1036 | $ +s3*( 2.801000d+02)+s4*(-2.663000d+02) | |
1037 | c | |
1038 | qv = 1.0d0/alinv/x* | |
1039 | $ (A0val+A1val*x+A2val*x2) * x**Bval * x1**Cval | |
1040 | qsea= 1.0d0/alinv/x* | |
1041 | $ A0sea * x**(B0sea+BB0sea*x) * x1**C0sea | |
1042 | c | |
1043 | qu = qv/3.0d0 + qsea/6.0d0 | |
1044 | qu = qu*x | |
1045 | ZUV=qu | |
1046 | ZUB=qu | |
1047 | qd = qv/12.0d0 + qsea/6.0d0 | |
1048 | qd = qd*x | |
1049 | ZDV=qd | |
1050 | ZDB=qd | |
1051 | ZSB=qd | |
1052 | g = WHIT5G(x,Q2) | |
1053 | g = g*x | |
1054 | ZGL=g | |
1055 | c | |
1056 | if((ic.ne.0) .and. (x*(1.0d0+4.0d0*mc2q2).lt.1.0d0)) then | |
1057 | A0dcv= s*( 1.219000d-01)+s2*( 6.200000d+00) | |
1058 | $ +s3*(-2.504000d+01)+s4*( 3.098000d+01) | |
1059 | A1dcv= s*( 1.913000d+00)+s2*(-7.690000d+01) | |
1060 | $ +s3*( 3.180000d+02)+s4*(-3.920000d+02) | |
1061 | A2dcv= s*(-7.160000d+00)+s2*( 2.503000d+02) | |
1062 | $ +s3*(-1.062000d+03)+s4*( 1.308000d+03) | |
1063 | A3dcv= s*( 3.190000d+00)+s2*(-2.301000d+02) | |
1064 | $ +s3*( 1.012000d+03)+s4*(-1.250000d+03) | |
1065 | Bdcv = 4.990000d-01+s*( 3.470000d+00)+s2*(-1.526000d+01) | |
1066 | $ +s3*( 1.967000d+01) | |
1067 | Cdcv = 3.290000d-01+s*( 8.240000d+00)+s2*(-3.800000d+01) | |
1068 | $ +s3*( 4.630000d+01) | |
1069 | Adcs = s*(-6.580000d-02)+s2*( 1.059000d-01) | |
1070 | $ +s3*(-6.630000d-02) | |
1071 | B0dcs=-2.750000d-01+s*(-4.760000d-01)+s2*( 1.191000d-01) | |
1072 | B1dcs= 6.370000d+00+s*(-5.320000d+00)+s2*( 1.986000d+00) | |
1073 | Cdcs = 3.400000d+00+s*( 3.750000d-01)+s2*(-8.790000d+00) | |
1074 | $ +s3*( 1.001000d+01) | |
1075 | c | |
1076 | dcv = 1.0d0/alinv/x* | |
1077 | $ (A0dcv+x*A1dcv+x2*A2dcv+x2*x*A3dcv) * x**Bdcv * x1**Cdcv | |
1078 | dcs = 1.0d0/alinv/x* | |
1079 | $ Adcs * x**(B0dcs+B1dcs*x) * x1**Cdcs | |
1080 | c | |
1081 | call WHIT5Q(x,mc*mc/Q2,cv,cs) | |
1082 | qc = cv/alinv/2.0d0/PI + cs*alstpi + dcs + dcv | |
1083 | qc = qc*x | |
1084 | ZCB=qc | |
1085 | else | |
1086 | qc = 0.0d0 | |
1087 | ZCB=qc | |
1088 | endif | |
1089 | endif | |
1090 | c | |
1091 | return | |
1092 | end | |
1093 | c------------------------------------------------------- | |
1094 | subroutine SFWHI6(ZX,ZQ,ZUV,ZDV,ZUB,ZDB,ZSB,ZCB,ZGL) | |
1095 | c------------------------------------------------------- | |
1096 | c WHIT6 parton distribution in the photon | |
1097 | c | |
1098 | c INPUT: integer ic : if ic=0 then qc=0 | |
1099 | c else qc is calculated | |
1100 | c DOUBLE PRECISION Q2 : energy scale Q^2 (GeV^2) | |
1101 | c DOUBLE PRECISION x : energy fraction | |
1102 | c | |
1103 | c OUTPUT: DOUBLE PRECISION qu : up-quark dist. | |
1104 | c DOUBLE PRECISION qd : down- or strange-quark dist. | |
1105 | c DOUBLE PRECISION qc : charm-quark dist. | |
1106 | c DOUBLE PRECISION g : gluon dist. | |
1107 | c------------------------------------------------------- | |
1108 | c Modified by M.Tanaka on July 22, 1994. | |
1109 | c The bug pointed out by M.Drees is fixed. | |
1110 | c------------------------------------------------------- | |
1111 | c Modified by I.Watanabe on July 22, 1994. | |
1112 | c------------------------------------------------------- | |
1113 | implicit none | |
1114 | external WHIT6G | |
1115 | double precision | |
1116 | + ZX,ZQ,ZUV,ZDV,ZUB,ZDB,ZSB,ZCB,ZGL | |
1117 | c arg | |
1118 | integer ic | |
1119 | DOUBLE PRECISION Q2,x | |
1120 | DOUBLE PRECISION qu,qd,qc,g | |
1121 | c const | |
1122 | DOUBLE PRECISION q42it,q52it,lam42,lam52 | |
1123 | DOUBLE PRECISION alinv,mc,PI | |
1124 | c local | |
1125 | DOUBLE PRECISION qv,qsea,cv,cs,dcv,dcs | |
1126 | DOUBLE PRECISION A0val,A1val,A2val,Bval,Cval, | |
1127 | $ A0sea,B0sea,BB0sea,C0sea | |
1128 | DOUBLE PRECISION A0dcv,A1dcv,A2dcv,A3dcv,Bdcv,Cdcv | |
1129 | DOUBLE PRECISION Adcs, B0dcs, B1dcs, Cdcs | |
1130 | DOUBLE PRECISION x1,x2,mc2q2 | |
1131 | DOUBLE PRECISION s,s2,s3,s4,prsccf,alstpi | |
1132 | DOUBLE PRECISION WHIT6G | |
1133 | c parameters | |
1134 | parameter(lam42=0.16d0, lam52=0.091411319d0) | |
1135 | parameter(Q42IT=4.0d0, Q52IT=100.0d0) | |
1136 | parameter(alinv=137.036d0, mc=1.5d0) | |
1137 | parameter(pi=3.14159265358979323846d0) | |
1138 | common /scale/ s,s2,s3,s4,prsccf | |
1139 | c | |
1140 | c begin | |
1141 | x=ZX | |
1142 | Q2=ZQ*ZQ | |
1143 | ic=1 | |
1144 | c | |
1145 | x1=1.0d0-x | |
1146 | x2=x**2 | |
1147 | mc2q2=mc**2/Q2 | |
1148 | c | |
1149 | if(Q2.lt.100.0d0) then | |
1150 | c under 100 GeV^2 | |
1151 | c | |
1152 | c set scale s | |
1153 | if(Q2.lt.4.0d0) then | |
1154 | cccc for under 4GeV^2 prescription | |
1155 | s= 0.0d0 | |
1156 | prsccf = log(Q2/LAM42)/ log(Q42IT/LAM42) | |
1157 | alstpi = 6.0d0/25.0d0/ log(Q42IT/LAM42) | |
1158 | else | |
1159 | s= log( log(Q2/LAM42)/ log(Q42IT/LAM42)) | |
1160 | prsccf = 1.0d0 | |
1161 | alstpi = 6.0d0/25.0d0/ log(Q2/LAM42) | |
1162 | endif | |
1163 | s2=s**2 | |
1164 | s3=s2*s | |
1165 | s4=s2**2 | |
1166 | c | |
1167 | cccccc WHIT6 quark (U100) | |
1168 | c | |
1169 | A0val= 2.540000d+00+s*( 2.000000d+00)+s2*( 7.180000d-01) | |
1170 | A1val= 6.230000d-02+s*(-7.010000d+00)+s2*( 1.251000d-01) | |
1171 | A2val=-1.642000d-01+s*(-4.360000d-01)+s2*( 1.048000d+01) | |
1172 | $ +s3*(-5.200000d+00) | |
1173 | Bval = 6.990000d-01+s*(-2.796000d-02)+s2*(-3.650000d-03) | |
1174 | Cval = 4.420000d-01+s*(-1.255000d+00)+s2*( 1.941000d+00) | |
1175 | $ +s3*(-9.950000d-01) | |
1176 | A0sea= 3.180000d+00+s*( 8.690000d+00)+s2*(-2.287000d+01) | |
1177 | $ +s3*( 1.896000d+01)+s4*(-5.140000d+00) | |
1178 | B0sea=-1.003000d-01+s*( 1.603000d-01)+s2*(-1.037000d+00) | |
1179 | $ +s3*( 9.440000d-01)+s4*(-2.915000d-01) | |
1180 | BB0sea=5.690000d+00+s*( 1.867000d+01)+s2*(-4.670000d+01) | |
1181 | $ +s3*( 5.050000d+01)+s4*(-1.835000d+01) | |
1182 | C0sea= 2.149000d+01+s*(-5.650000d+01)+s2*( 1.293000d+02) | |
1183 | $ +s3*(-1.459000d+02)+s4*( 5.750000d+01) | |
1184 | c | |
1185 | qv = prsccf/alinv/x* | |
1186 | $ (A0val+A1val*x+A2val*x2) * x**Bval * x1**Cval | |
1187 | qsea= prsccf/alinv/x* | |
1188 | $ A0sea * x**(B0sea+BB0sea*x) * x1**C0sea | |
1189 | c | |
1190 | qu = qv/3.0d0 + qsea/6.0d0 | |
1191 | qu = qu*x | |
1192 | ZUV=qu | |
1193 | ZUB=qu | |
1194 | qd = qv/12.0d0 + qsea/6.0d0 | |
1195 | qd = qd*x | |
1196 | ZDV=qd | |
1197 | ZDB=qd | |
1198 | ZSB=qd | |
1199 | c | |
1200 | if((ic.ne.0) .and. (x*(1.0d0+4.0d0*mc2q2).lt.1.0d0)) then | |
1201 | call WHIT6Q(x,mc2q2,cv,cs) | |
1202 | qc = cv/alinv/2.0d0/PI + cs*alstpi | |
1203 | qc = qc*x | |
1204 | ZCB=qc | |
1205 | else | |
1206 | qc = 0.0d0 | |
1207 | ZCB=qc | |
1208 | endif | |
1209 | c | |
1210 | g = WHIT6G(x,Q2) | |
1211 | g = g*x | |
1212 | ZGL=g | |
1213 | c | |
1214 | else | |
1215 | c over 100 GeV^2 | |
1216 | c | |
1217 | c set scale s | |
1218 | s= log( log(Q2/LAM52)/ log(Q52IT/LAM52)) | |
1219 | prsccf = 1.0d0 | |
1220 | alstpi = 6.0d0/23.0d0/ log(Q2/LAM52) | |
1221 | s2=s**2 | |
1222 | s3=s2*s | |
1223 | s4=s2**2 | |
1224 | c | |
1225 | cccccc WHIT6 quark (O100) | |
1226 | c | |
1227 | A0val= 4.270000d+00+s*( 3.096000d+00)+s2*( 1.621000d+00) | |
1228 | A1val=-4.740000d+00+s*(-6.900000d+00)+s2*(-2.439000d+00) | |
1229 | A2val= 2.837000d+00+s*( 6.460000d+00)+s2*( 4.100000d+00) | |
1230 | Bval = 6.780000d-01+s*(-3.940000d-02)+s2*( 1.758000d-02) | |
1231 | Cval = 1.728000d-01+s*(-2.493000d-02)+s2*( 1.451000d-01) | |
1232 | A0sea= 3.340000d+00+s*(-5.610000d+00)+s2*( 5.000000d+01) | |
1233 | $ +s3*(-2.207000d+02)+s4*( 3.028000d+02) | |
1234 | B0sea=-2.402000d-01+s*(-4.090000d-01)+s2*( 2.263000d+00) | |
1235 | $ +s3*(-1.050000d+01)+s4*( 1.487000d+01) | |
1236 | BB0sea=8.790000d+00+s*(-8.860000d+00)+s2*( 1.640000d+02) | |
1237 | $ +s3*(-7.120000d+02)+s4*( 9.730000d+02) | |
1238 | C0sea= 9.160000d+00+s*( 9.290000d+00)+s2*(-2.784000d+02) | |
1239 | $ +s3*( 1.175000d+03)+s4*(-1.592000d+03) | |
1240 | c | |
1241 | qv = 1.0d0/alinv/x* | |
1242 | $ (A0val+A1val*x+A2val*x2) * x**Bval * x1**Cval | |
1243 | qsea= 1.0d0/alinv/x* | |
1244 | $ A0sea * x**(B0sea+BB0sea*x) * x1**C0sea | |
1245 | c | |
1246 | qu = qv/3.0d0 + qsea/6.0d0 | |
1247 | qu = qu*x | |
1248 | ZUV=qu | |
1249 | ZUB=qu | |
1250 | qd = qv/12.0d0 + qsea/6.0d0 | |
1251 | qd = qd*x | |
1252 | ZDV=qd | |
1253 | ZDB=qd | |
1254 | ZSB=qd | |
1255 | g = WHIT6G(x,Q2) | |
1256 | g = g*x | |
1257 | ZGL=g | |
1258 | c | |
1259 | if((ic.ne.0) .and. (x*(1.0d0+4.0d0*mc2q2).lt.1.0d0)) then | |
1260 | A0dcv= s*( 1.219000d-01)+s2*( 6.200000d+00) | |
1261 | $ +s3*(-2.504000d+01)+s4*( 3.098000d+01) | |
1262 | A1dcv= s*( 1.913000d+00)+s2*(-7.690000d+01) | |
1263 | $ +s3*( 3.180000d+02)+s4*(-3.920000d+02) | |
1264 | A2dcv= s*(-7.160000d+00)+s2*( 2.503000d+02) | |
1265 | $ +s3*(-1.062000d+03)+s4*( 1.308000d+03) | |
1266 | A3dcv= s*( 3.190000d+00)+s2*(-2.301000d+02) | |
1267 | $ +s3*( 1.012000d+03)+s4*(-1.250000d+03) | |
1268 | Bdcv = 4.990000d-01+s*( 3.470000d+00)+s2*(-1.526000d+01) | |
1269 | $ +s3*( 1.967000d+01) | |
1270 | Cdcv = 3.290000d-01+s*( 8.240000d+00)+s2*(-3.800000d+01) | |
1271 | $ +s3*( 4.630000d+01) | |
1272 | Adcs = s*(-4.990000d-02)+s2*( 1.026000d-01) | |
1273 | $ +s3*(-7.870000d-02) | |
1274 | B0dcs=-3.610000d-01+s*(-5.760000d-01)+s2*( 2.257000d-01) | |
1275 | B1dcs= 7.680000d+00+s*(-8.830000d+00)+s2*( 3.880000d+00) | |
1276 | Cdcs = 2.548000d+00+s*( 6.910000d-01)+s2*(-8.700000d+00) | |
1277 | $ +s3*( 1.065000d+01) | |
1278 | c | |
1279 | dcv = 1.0d0/alinv/x* | |
1280 | $ (A0dcv+x*A1dcv+x2*A2dcv+x2*x*A3dcv) * x**Bdcv * x1**Cdcv | |
1281 | dcs = 1.0d0/alinv/x* | |
1282 | $ Adcs * x**(B0dcs+B1dcs*x) * x1**Cdcs | |
1283 | c | |
1284 | call WHIT6Q(x,mc*mc/Q2,cv,cs) | |
1285 | qc = cv/alinv/2.0d0/PI + cs*alstpi + dcs + dcv | |
1286 | qc = qc*x | |
1287 | ZCB=qc | |
1288 | else | |
1289 | qc = 0.0d0 | |
1290 | ZCB=qc | |
1291 | endif | |
1292 | endif | |
1293 | c | |
1294 | return | |
1295 | end | |
1296 | c | |
1297 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
1298 | DOUBLE PRECISION function WHIT1G(x,Q2) | |
1299 | c input: x,Q2 | |
1300 | c output: clg | |
1301 | c (gluon dist.) | |
1302 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
1303 | implicit none | |
1304 | c arg | |
1305 | DOUBLE PRECISION Q2,x | |
1306 | c const | |
1307 | DOUBLE PRECISION q42it,q52it,lam42,lam52 | |
1308 | DOUBLE PRECISION alinv | |
1309 | c local | |
1310 | DOUBLE PRECISION A0g,B0g,C0g,A1g,AA1g,B1g,C1g | |
1311 | DOUBLE PRECISION s,s2,s3,s4,prsccf | |
1312 | DOUBLE PRECISION x1 | |
1313 | c parameters | |
1314 | parameter(lam42=0.16d0, lam52=0.091411319d0) | |
1315 | parameter(Q42IT=4.0d0, Q52IT=100.0d0) | |
1316 | parameter(alinv=137.036d0) | |
1317 | common /scale/ s,s2,s3,s4,prsccf | |
1318 | c | |
1319 | c begin | |
1320 | x1=1.0d0-x | |
1321 | c | |
1322 | if(Q2.lt.100.0d0) then | |
1323 | c under 100 GeV^2 | |
1324 | c | |
1325 | cccccc WHIT1 gluon (U100) | |
1326 | c | |
1327 | A0g = 2.000000d+00+s*(-3.280000d+00)+s2*( 2.894000d+00) | |
1328 | $ +s3*(-1.561000d+00)+s4*( 8.180000d-01) | |
1329 | B0g = s*(-7.610000d-01)+s2*(-4.900000d-02) | |
1330 | $ +s3*( 4.460000d-01) | |
1331 | C0g = 3.000000d+00+s*( 1.586000d+00)+s2*(-9.490000d-01) | |
1332 | $ +s3*( 2.425000d+00) | |
1333 | A1g = s*( 4.610000d-01)+s2*( 1.041000d-01) | |
1334 | $ +s3*(-1.753000d-02)+s4*(-2.717000d-01) | |
1335 | AA1g= s*( 9.680000d-03)+s2*(-4.170000d-01) | |
1336 | $ +s3*(-3.950000d-01)+s4*( 8.430000d-01) | |
1337 | B1g =-4.140000d-01+s*(-6.060000d-02)+s2*( 2.847000d-01) | |
1338 | $ +s3*(-5.070000d-01) | |
1339 | C1g = 1.244000d+00+s*( 5.880000d-01)+s2*(-1.228000d+00) | |
1340 | $ +s3*( 8.090000d-01) | |
1341 | else | |
1342 | c over 100 GeV^2 | |
1343 | c | |
1344 | cccccc WHIT1 gluon (O100) | |
1345 | c | |
1346 | A0g = 7.840000d-01+s*(-2.238000d+00)+s2*( 1.617000d+01) | |
1347 | $ +s3*(-6.250000d+01)+s4*( 8.390000d+01) | |
1348 | B0g =-4.030000d-01+s*(-1.307000d+00)+s2*( 8.780000d+00) | |
1349 | $ +s3*(-3.580000d+01)+s4*( 5.350000d+01) | |
1350 | C0g = 4.450000d+00+s*( 1.027000d+00)+s2*( 4.460000d+01) | |
1351 | $ +s3*(-1.600000d+02)+s4*( 1.816000d+02) | |
1352 | A1g = 3.010000d-01+s*( 1.275000d+00)+s2*(-1.563000d+00) | |
1353 | $ +s3*( 4.100000d+00)+s4*(-1.337000d+01) | |
1354 | AA1g=-1.305000d-01+s*(-1.245000d+00)+s2*( 2.438000d+00) | |
1355 | $ +s3*(-2.539000d+00)+s4*( 1.273000d+01) | |
1356 | B1g =-4.890000d-01+s*( 9.550000d-01)+s2*(-4.400000d+00) | |
1357 | $ +s3*( 1.022000d+01)+s4*(-1.713000d+01) | |
1358 | C1g = 1.331000d+00+s*(-2.481000d-01)+s2*( 1.950000d+00) | |
1359 | $ +s3*(-2.072000d+00) | |
1360 | endif | |
1361 | c | |
1362 | WHIT1G = prsccf/alinv/x* | |
1363 | $ ( A0g * x**B0g * x1**C0g | |
1364 | $ +(A1g+AA1g*x) * x**B1g * x1**C1g ) | |
1365 | c | |
1366 | return | |
1367 | end | |
1368 | c | |
1369 | cccccccccccccccccccccccccccccc | |
1370 | c QPM calculation | |
1371 | subroutine WHIT1Q(x,r,cv,cs) | |
1372 | ccc INPUTS : x,r=mc^2/Q^2 | |
1373 | ccc OUTPUTS: cv,cs (valence- and sea- charm quark dist) | |
1374 | ccc cv <-- cv / ( alpha / 2PI) | |
1375 | ccc cs <-- cs / ( alpha_s/2PI) | |
1376 | c | |
1377 | implicit none | |
1378 | c arg | |
1379 | DOUBLE PRECISION x,r | |
1380 | DOUBLE PRECISION cv,cs | |
1381 | c CONST | |
1382 | DOUBLE PRECISION ec,mc | |
1383 | parameter(ec=2.0d0/3.0d0,mc=1.5d0) | |
1384 | c N=15 Gauss int. weights and points | |
1385 | integer GN,i | |
1386 | parameter(GN=15) | |
1387 | DOUBLE PRECISION XG(GN), XW(GN) | |
1388 | DATA (XG(i),i=1,GN)/6.003741d-03, | |
1389 | $ 3.136330d-02, 7.589671d-02, 1.377911d-01, 2.145139d-01, | |
1390 | $ 3.029243d-01, 3.994030d-01, 5.000000d-01, 6.005970d-01, | |
1391 | $ 6.970757d-01, 7.854861d-01, 8.622089d-01, 9.241033d-01, | |
1392 | $ 9.686367d-01, 9.939963d-01/ | |
1393 | DATA (XW(i),i=1,GN)/1.537662d-02, | |
1394 | $ 3.518302d-02, 5.357961d-02, 6.978534d-02, 8.313460d-02, | |
1395 | $ 9.308050d-02, 9.921574d-02, 1.012891d-01, 9.921574d-02, | |
1396 | $ 9.308050d-02, 8.313460d-02, 6.978534d-02, 5.357961d-02, | |
1397 | $ 3.518302d-02, 1.537662d-02/ | |
1398 | c local | |
1399 | DOUBLE PRECISION sum, y,z,beta,w,WHIT1G,L | |
1400 | parameter(L=4.0d0) | |
1401 | DOUBLE PRECISION x1,rx,z1,rz | |
1402 | c | |
1403 | c begin | |
1404 | x1=1.0d0-x | |
1405 | rx=4.0d0*r*x | |
1406 | c | |
1407 | c direct | |
1408 | beta=dsqrt(1.0d0-rx/x1) | |
1409 | w=x*( beta*(-1.0d0+8.0d0*x*x1-rx*x1) | |
1410 | $ +(x**2+x1**2+rx*(1.0d0-3.0d0*x)-0.5d0*rx**2) | |
1411 | $ * log( (1.0d0+beta)/(1.0d0-beta) )) | |
1412 | cv = 3.0d0*ec**2 * w / x | |
1413 | c | |
1414 | c resolved | |
1415 | sum=0.0d0 | |
1416 | do 10 i=1,GN | |
1417 | y= x+rx + (x1-rx)*XG(i)**L | |
1418 | z=x/y | |
1419 | z1=1.0d0-z | |
1420 | rz=4.0d0*r*z | |
1421 | beta=dsqrt(1.0d0-rz/z1) | |
1422 | w=z*( beta*(-1.0d0+8.0d0*z*z1-rz*z1) | |
1423 | $ +(z**2+z1**2+rz*(1.0d0-3.0d0*z)-0.5d0*rz**2) | |
1424 | $ * log( (1.0d0+beta)/(1.0d0-beta) )) | |
1425 | c | |
1426 | sum= sum + w * WHIT1G(y,mc**2/r)* L*XG(i)**(L-1.0d0)*XW(i) | |
1427 | c | |
1428 | 10 continue | |
1429 | c | |
1430 | cs = 0.5d0/x * (x1-rx) * sum | |
1431 | c | |
1432 | return | |
1433 | end | |
1434 | c | |
1435 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
1436 | DOUBLE PRECISION function WHIT2G(x,Q2) | |
1437 | c input: x,Q2 | |
1438 | c output: clg | |
1439 | c (gluon dist.) | |
1440 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
1441 | implicit none | |
1442 | c arg | |
1443 | DOUBLE PRECISION Q2,x | |
1444 | c const | |
1445 | DOUBLE PRECISION q42it,q52it,lam42,lam52 | |
1446 | DOUBLE PRECISION alinv | |
1447 | c local | |
1448 | DOUBLE PRECISION A0g,B0g,C0g,A1g,AA1g,B1g,C1g | |
1449 | DOUBLE PRECISION s,s2,s3,s4,prsccf | |
1450 | DOUBLE PRECISION x1 | |
1451 | c parameters | |
1452 | parameter(lam42=0.16d0, lam52=0.091411319d0) | |
1453 | parameter(Q42IT=4.0d0, Q52IT=100.0d0) | |
1454 | parameter(alinv=137.036d0) | |
1455 | common /scale/ s,s2,s3,s4,prsccf | |
1456 | c | |
1457 | c begin | |
1458 | x1=1.0d0-x | |
1459 | c | |
1460 | if(Q2.lt.100.0d0) then | |
1461 | c under 100 GeV^2 | |
1462 | c | |
1463 | cccccc WHIT2 gluon (U100) | |
1464 | c | |
1465 | A0g = 5.000000d+00+s*(-1.499000d+01)+s2*( 2.617000d+01) | |
1466 | $ +s3*(-2.530000d+01)+s4*( 1.012000d+01) | |
1467 | B0g = s*(-9.370000d-01)+s2*( 4.100000d-01) | |
1468 | $ +s3*( 3.390000d-02) | |
1469 | C0g = 9.000000d+00+s*( 7.090000d-01)+s2*( 3.118000d+00) | |
1470 | $ +s3*(-5.820000d-04) | |
1471 | A1g = s*( 4.610000d-01)+s2*( 1.041000d-01) | |
1472 | $ +s3*(-1.753000d-02)+s4*(-2.717000d-01) | |
1473 | AA1g= s*( 9.680000d-03)+s2*(-4.170000d-01) | |
1474 | $ +s3*(-3.950000d-01)+s4*( 8.430000d-01) | |
1475 | B1g =-4.140000d-01+s*(-6.060000d-02)+s2*( 2.847000d-01) | |
1476 | $ +s3*(-5.070000d-01) | |
1477 | C1g = 1.244000d+00+s*( 5.880000d-01)+s2*(-1.228000d+00) | |
1478 | $ +s3*( 8.090000d-01) | |
1479 | else | |
1480 | c over 100 GeV^2 | |
1481 | c | |
1482 | cccccc WHIT2 gluon (O100) | |
1483 | c | |
1484 | A0g = 1.095000d+00+s*(-2.388000d+00)+s2*( 9.190000d+00) | |
1485 | $ +s3*(-3.032000d+01)+s4*( 3.480000d+01) | |
1486 | B0g =-4.410000d-01+s*(-9.070000d-01)+s2*( 4.680000d+00) | |
1487 | $ +s3*(-1.866000d+01)+s4*( 2.717000d+01) | |
1488 | C0g = 1.099000d+01+s*( 4.710000d+00)+s2*( 2.801000d+01) | |
1489 | $ +s3*(-1.279000d+02)+s4*( 1.640000d+02) | |
1490 | A1g = 3.010000d-01+s*( 1.275000d+00)+s2*(-1.563000d+00) | |
1491 | $ +s3*( 4.100000d+00)+s4*(-1.337000d+01) | |
1492 | AA1g=-1.305000d-01+s*(-1.245000d+00)+s2*( 2.438000d+00) | |
1493 | $ +s3*(-2.539000d+00)+s4*( 1.273000d+01) | |
1494 | B1g =-4.890000d-01+s*( 9.550000d-01)+s2*(-4.400000d+00) | |
1495 | $ +s3*( 1.022000d+01)+s4*(-1.713000d+01) | |
1496 | C1g = 1.331000d+00+s*(-2.481000d-01)+s2*( 1.950000d+00) | |
1497 | $ +s3*(-2.072000d+00) | |
1498 | endif | |
1499 | c | |
1500 | WHIT2G = prsccf/alinv/x* | |
1501 | $ ( A0g * x**B0g * x1**C0g | |
1502 | $ +(A1g+AA1g*x) * x**B1g * x1**C1g ) | |
1503 | c | |
1504 | return | |
1505 | end | |
1506 | c | |
1507 | cccccccccccccccccccccccccccccc | |
1508 | c QPM calculation | |
1509 | subroutine WHIT2Q(x,r,cv,cs) | |
1510 | ccc INPUTS : x,r=mc^2/Q^2 | |
1511 | ccc OUTPUTS: cv,cs (valence- and sea- charm quark dist) | |
1512 | ccc cv <-- cv / ( alpha / 2PI) | |
1513 | ccc cs <-- cs / ( alpha_s/2PI) | |
1514 | c | |
1515 | implicit none | |
1516 | c arg | |
1517 | DOUBLE PRECISION x,r | |
1518 | DOUBLE PRECISION cv,cs | |
1519 | c CONST | |
1520 | DOUBLE PRECISION ec,mc | |
1521 | parameter(ec=2.0d0/3.0d0,mc=1.5d0) | |
1522 | c N=15 Gauss int. weights and points | |
1523 | integer GN,i | |
1524 | parameter(GN=15) | |
1525 | DOUBLE PRECISION XG(GN), XW(GN) | |
1526 | DATA (XG(i),i=1,GN)/6.003741d-03, | |
1527 | $ 3.136330d-02, 7.589671d-02, 1.377911d-01, 2.145139d-01, | |
1528 | $ 3.029243d-01, 3.994030d-01, 5.000000d-01, 6.005970d-01, | |
1529 | $ 6.970757d-01, 7.854861d-01, 8.622089d-01, 9.241033d-01, | |
1530 | $ 9.686367d-01, 9.939963d-01/ | |
1531 | DATA (XW(i),i=1,GN)/1.537662d-02, | |
1532 | $ 3.518302d-02, 5.357961d-02, 6.978534d-02, 8.313460d-02, | |
1533 | $ 9.308050d-02, 9.921574d-02, 1.012891d-01, 9.921574d-02, | |
1534 | $ 9.308050d-02, 8.313460d-02, 6.978534d-02, 5.357961d-02, | |
1535 | $ 3.518302d-02, 1.537662d-02/ | |
1536 | c local | |
1537 | DOUBLE PRECISION sum, y,z,beta,w,WHIT2G,L | |
1538 | parameter(L=4.0d0) | |
1539 | DOUBLE PRECISION x1,rx,z1,rz | |
1540 | c | |
1541 | c begin | |
1542 | x1=1.0d0-x | |
1543 | rx=4.0d0*r*x | |
1544 | c | |
1545 | c direct | |
1546 | beta=dsqrt(1.0d0-rx/x1) | |
1547 | w=x*( beta*(-1.0d0+8.0d0*x*x1-rx*x1) | |
1548 | $ +(x**2+x1**2+rx*(1.0d0-3.0d0*x)-0.5d0*rx**2) | |
1549 | $ * log( (1.0d0+beta)/(1.0d0-beta) )) | |
1550 | cv = 3.0d0*ec**2 * w / x | |
1551 | c | |
1552 | c resolved | |
1553 | sum=0.0d0 | |
1554 | do 10 i=1,GN | |
1555 | y= x+rx + (x1-rx)*XG(i)**L | |
1556 | z=x/y | |
1557 | z1=1.0d0-z | |
1558 | rz=4.0d0*r*z | |
1559 | beta=dsqrt(1.0d0-rz/z1) | |
1560 | w=z*( beta*(-1.0d0+8.0d0*z*z1-rz*z1) | |
1561 | $ +(z**2+z1**2+rz*(1.0d0-3.0d0*z)-0.5d0*rz**2) | |
1562 | $ * log( (1.0d0+beta)/(1.0d0-beta) )) | |
1563 | c | |
1564 | sum= sum + w * WHIT2G(y,mc**2/r)* L*XG(i)**(L-1.0d0)*XW(i) | |
1565 | c | |
1566 | 10 continue | |
1567 | c | |
1568 | cs = 0.5d0/x * (x1-rx) * sum | |
1569 | c | |
1570 | return | |
1571 | end | |
1572 | c | |
1573 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
1574 | DOUBLE PRECISION function WHIT3G(x,Q2) | |
1575 | c input: x,Q2 | |
1576 | c output: clg | |
1577 | c (gluon dist.) | |
1578 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
1579 | implicit none | |
1580 | c arg | |
1581 | DOUBLE PRECISION Q2,x | |
1582 | c const | |
1583 | DOUBLE PRECISION q42it,q52it,lam42,lam52 | |
1584 | DOUBLE PRECISION alinv | |
1585 | c local | |
1586 | DOUBLE PRECISION A0g,B0g,C0g,A1g,AA1g,B1g,C1g | |
1587 | DOUBLE PRECISION s,s2,s3,s4,prsccf | |
1588 | DOUBLE PRECISION x1 | |
1589 | c parameters | |
1590 | parameter(lam42=0.16d0, lam52=0.091411319d0) | |
1591 | parameter(Q42IT=4.0d0, Q52IT=100.0d0) | |
1592 | parameter(alinv=137.036d0) | |
1593 | common /scale/ s,s2,s3,s4,prsccf | |
1594 | c | |
1595 | c begin | |
1596 | x1=1.0d0-x | |
1597 | c | |
1598 | if(Q2.lt.100.0d0) then | |
1599 | c under 100 GeV^2 | |
1600 | c | |
1601 | cccccc WHIT3 gluon (U100) | |
1602 | c | |
1603 | A0g = 8.000000d+00+s*(-2.864000d+01)+s2*( 5.590000d+01) | |
1604 | $ +s3*(-5.760000d+01)+s4*( 2.366000d+01) | |
1605 | B0g = s*(-9.870000d-01)+s2*( 5.100000d-01) | |
1606 | $ +s3*(-6.670000d-02) | |
1607 | C0g = 1.500000d+01+s*( 3.310000d-01)+s2*( 3.500000d+00) | |
1608 | $ +s3*( 8.920000d-01) | |
1609 | A1g = s*( 4.610000d-01)+s2*( 1.041000d-01) | |
1610 | $ +s3*(-1.753000d-02)+s4*(-2.717000d-01) | |
1611 | AA1g= s*( 9.680000d-03)+s2*(-4.170000d-01) | |
1612 | $ +s3*(-3.950000d-01)+s4*( 8.430000d-01) | |
1613 | B1g =-4.140000d-01+s*(-6.060000d-02)+s2*( 2.847000d-01) | |
1614 | $ +s3*(-5.070000d-01) | |
1615 | C1g = 1.244000d+00+s*( 5.880000d-01)+s2*(-1.228000d+00) | |
1616 | $ +s3*( 8.090000d-01) | |
1617 | else | |
1618 | c over 100 GeV^2 | |
1619 | c | |
1620 | cccccc WHIT3 gluon (O100) | |
1621 | c | |
1622 | A0g = 1.270000d+00+s*(-2.817000d+00)+s2*( 5.740000d+00) | |
1623 | $ +s3*(-1.327000d+01)+s4*( 1.268000d+01) | |
1624 | B0g =-4.610000d-01+s*(-8.170000d-01)+s2*( 3.320000d+00) | |
1625 | $ +s3*(-1.296000d+01)+s4*( 1.893000d+01) | |
1626 | C0g = 1.721000d+01+s*( 1.257000d+00)+s2*( 5.050000d+01) | |
1627 | $ +s3*(-2.761000d+02)+s4*( 4.900000d+02) | |
1628 | A1g = 3.010000d-01+s*( 1.275000d+00)+s2*(-1.563000d+00) | |
1629 | $ +s3*( 4.100000d+00)+s4*(-1.337000d+01) | |
1630 | AA1g=-1.305000d-01+s*(-1.245000d+00)+s2*( 2.438000d+00) | |
1631 | $ +s3*(-2.539000d+00)+s4*( 1.273000d+01) | |
1632 | B1g =-4.890000d-01+s*( 9.550000d-01)+s2*(-4.400000d+00) | |
1633 | $ +s3*( 1.022000d+01)+s4*(-1.713000d+01) | |
1634 | C1g = 1.331000d+00+s*(-2.481000d-01)+s2*( 1.950000d+00) | |
1635 | $ +s3*(-2.072000d+00) | |
1636 | endif | |
1637 | c | |
1638 | WHIT3G = prsccf/alinv/x* | |
1639 | $ ( A0g * x**B0g * x1**C0g | |
1640 | $ +(A1g+AA1g*x) * x**B1g * x1**C1g ) | |
1641 | c | |
1642 | return | |
1643 | end | |
1644 | c | |
1645 | cccccccccccccccccccccccccccccc | |
1646 | c QPM calculation | |
1647 | subroutine WHIT3Q(x,r,cv,cs) | |
1648 | ccc INPUTS : x,r=mc^2/Q^2 | |
1649 | ccc OUTPUTS: cv,cs (valence- and sea- charm quark dist) | |
1650 | ccc cv <-- cv / ( alpha / 2PI) | |
1651 | ccc cs <-- cs / ( alpha_s/2PI) | |
1652 | c | |
1653 | implicit none | |
1654 | c arg | |
1655 | DOUBLE PRECISION x,r | |
1656 | DOUBLE PRECISION cv,cs | |
1657 | c CONST | |
1658 | DOUBLE PRECISION ec,mc | |
1659 | parameter(ec=2.0d0/3.0d0,mc=1.5d0) | |
1660 | c N=15 Gauss int. weights and points | |
1661 | integer GN,i | |
1662 | parameter(GN=15) | |
1663 | DOUBLE PRECISION XG(GN), XW(GN) | |
1664 | DATA (XG(i),i=1,GN)/6.003741d-03, | |
1665 | $ 3.136330d-02, 7.589671d-02, 1.377911d-01, 2.145139d-01, | |
1666 | $ 3.029243d-01, 3.994030d-01, 5.000000d-01, 6.005970d-01, | |
1667 | $ 6.970757d-01, 7.854861d-01, 8.622089d-01, 9.241033d-01, | |
1668 | $ 9.686367d-01, 9.939963d-01/ | |
1669 | DATA (XW(i),i=1,GN)/1.537662d-02, | |
1670 | $ 3.518302d-02, 5.357961d-02, 6.978534d-02, 8.313460d-02, | |
1671 | $ 9.308050d-02, 9.921574d-02, 1.012891d-01, 9.921574d-02, | |
1672 | $ 9.308050d-02, 8.313460d-02, 6.978534d-02, 5.357961d-02, | |
1673 | $ 3.518302d-02, 1.537662d-02/ | |
1674 | c local | |
1675 | DOUBLE PRECISION sum, y,z,beta,w,WHIT3G,L | |
1676 | parameter(L=4.0d0) | |
1677 | DOUBLE PRECISION x1,rx,z1,rz | |
1678 | c | |
1679 | c begin | |
1680 | x1=1.0d0-x | |
1681 | rx=4.0d0*r*x | |
1682 | c | |
1683 | c direct | |
1684 | beta=dsqrt(1.0d0-rx/x1) | |
1685 | w=x*( beta*(-1.0d0+8.0d0*x*x1-rx*x1) | |
1686 | $ +(x**2+x1**2+rx*(1.0d0-3.0d0*x)-0.5d0*rx**2) | |
1687 | $ * log( (1.0d0+beta)/(1.0d0-beta) )) | |
1688 | cv = 3.0d0*ec**2 * w / x | |
1689 | c | |
1690 | c resolved | |
1691 | sum=0.0d0 | |
1692 | do 10 i=1,GN | |
1693 | y= x+rx + (x1-rx)*XG(i)**L | |
1694 | z=x/y | |
1695 | z1=1.0d0-z | |
1696 | rz=4.0d0*r*z | |
1697 | beta=dsqrt(1.0d0-rz/z1) | |
1698 | w=z*( beta*(-1.0d0+8.0d0*z*z1-rz*z1) | |
1699 | $ +(z**2+z1**2+rz*(1.0d0-3.0d0*z)-0.5d0*rz**2) | |
1700 | $ * log( (1.0d0+beta)/(1.0d0-beta) )) | |
1701 | c | |
1702 | sum= sum + w * WHIT3G(y,mc**2/r)* L*XG(i)**(L-1.0d0)*XW(i) | |
1703 | c | |
1704 | 10 continue | |
1705 | c | |
1706 | cs = 0.5d0/x * (x1-rx) * sum | |
1707 | c | |
1708 | return | |
1709 | end | |
1710 | c | |
1711 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
1712 | DOUBLE PRECISION function WHIT4G(x,Q2) | |
1713 | c input: x,Q2 | |
1714 | c output: clg | |
1715 | c (gluon dist.) | |
1716 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
1717 | implicit none | |
1718 | c arg | |
1719 | DOUBLE PRECISION Q2,x | |
1720 | c const | |
1721 | DOUBLE PRECISION q42it,q52it,lam42,lam52 | |
1722 | DOUBLE PRECISION alinv | |
1723 | c local | |
1724 | DOUBLE PRECISION A0g,B0g,C0g,A1g,AA1g,B1g,C1g | |
1725 | DOUBLE PRECISION s,s2,s3,s4,prsccf | |
1726 | DOUBLE PRECISION x1 | |
1727 | c parameters | |
1728 | parameter(lam42=0.16d0, lam52=0.091411319d0) | |
1729 | parameter(Q42IT=4.0d0, Q52IT=100.0d0) | |
1730 | parameter(alinv=137.036d0) | |
1731 | common /scale/ s,s2,s3,s4,prsccf | |
1732 | c | |
1733 | c begin | |
1734 | x1=1.0d0-x | |
1735 | c | |
1736 | if(Q2.lt.100.0d0) then | |
1737 | c under 100 GeV^2 | |
1738 | c | |
1739 | cccccc WHIT4 gluon (U100) | |
1740 | c | |
1741 | A0g = 4.000000d+00+s*(-9.400000d+00)+s2*( 1.555000d+01) | |
1742 | $ +s3*(-1.450000d+01)+s4*( 5.470000d+00) | |
1743 | B0g = s*(-1.142000d+00)+s2*( 1.034000d+00) | |
1744 | $ +s3*(-4.410000d-01) | |
1745 | C0g = 3.000000d+00+s*( 8.720000d-01)+s2*( 1.006000d+00) | |
1746 | $ +s3*( 3.560000d-01) | |
1747 | A1g = s*( 6.020000d-01)+s2*( 5.090000d-01) | |
1748 | $ +s3*(-2.054000d+00)+s4*( 1.392000d+00) | |
1749 | AA1g= s*(-9.220000d-02)+s2*(-1.899000d+00) | |
1750 | $ +s3*( 4.180000d+00)+s4*(-2.494000d+00) | |
1751 | B1g =-2.895000d-01+s*( 3.760000d-01)+s2*(-1.719000d+00) | |
1752 | $ +s3*( 1.116000d+00) | |
1753 | C1g = 1.439000d+00+s*(-5.570000d-01)+s2*( 3.660000d-01) | |
1754 | $ +s3*( 7.330000d-01)+s4*(-7.620000d-01) | |
1755 | else | |
1756 | c over 100 GeV^2 | |
1757 | c | |
1758 | cccccc WHIT4 gluon (O100) | |
1759 | c | |
1760 | A0g = 1.384000d+00+s*(-2.455000d+00)+s2*( 8.940000d+00) | |
1761 | $ +s3*(-2.906000d+01)+s4*( 3.710000d+01) | |
1762 | B0g =-4.420000d-01+s*(-7.190000d-01)+s2*( 2.961000d+00) | |
1763 | $ +s3*(-1.209000d+01)+s4*( 1.916000d+01) | |
1764 | C0g = 4.210000d+00+s*( 2.524000d+00)+s2*( 1.003000d+01) | |
1765 | $ +s3*(-1.827000d+01)+s4*( 2.162000d+00) | |
1766 | A1g = 2.992000d-01+s*( 1.179000d+00)+s2*(-1.915000d+00) | |
1767 | $ +s3*( 7.260000d+00)+s4*(-1.839000d+01) | |
1768 | AA1g=-1.600000d-01+s*(-1.114000d+00)+s2*( 2.939000d+00) | |
1769 | $ +s3*(-6.660000d+00)+s4*( 1.923000d+01) | |
1770 | B1g =-4.830000d-01+s*( 7.550000d-01)+s2*(-3.800000d+00) | |
1771 | $ +s3*( 1.075000d+01)+s4*(-1.993000d+01) | |
1772 | C1g = 1.297000d+00+s*(-1.669000d-01)+s2*( 1.906000d+00) | |
1773 | $ +s3*(-2.057000d+00) | |
1774 | endif | |
1775 | c | |
1776 | WHIT4G = prsccf/alinv/x* | |
1777 | $ ( A0g * x**B0g * x1**C0g | |
1778 | $ +(A1g+AA1g*x) * x**B1g * x1**C1g ) | |
1779 | c | |
1780 | return | |
1781 | end | |
1782 | c | |
1783 | cccccccccccccccccccccccccccccc | |
1784 | c QPM calculation | |
1785 | subroutine WHIT4Q(x,r,cv,cs) | |
1786 | ccc INPUTS : x,r=mc^2/Q^2 | |
1787 | ccc OUTPUTS: cv,cs (valence- and sea- charm quark dist) | |
1788 | ccc cv <-- cv / ( alpha / 2PI) | |
1789 | ccc cs <-- cs / ( alpha_s/2PI) | |
1790 | c | |
1791 | implicit none | |
1792 | c arg | |
1793 | DOUBLE PRECISION x,r | |
1794 | DOUBLE PRECISION cv,cs | |
1795 | c CONST | |
1796 | DOUBLE PRECISION ec,mc | |
1797 | parameter(ec=2.0d0/3.0d0,mc=1.5d0) | |
1798 | c N=15 Gauss int. weights and points | |
1799 | integer GN,i | |
1800 | parameter(GN=15) | |
1801 | DOUBLE PRECISION XG(GN), XW(GN) | |
1802 | DATA (XG(i),i=1,GN)/6.003741d-03, | |
1803 | $ 3.136330d-02, 7.589671d-02, 1.377911d-01, 2.145139d-01, | |
1804 | $ 3.029243d-01, 3.994030d-01, 5.000000d-01, 6.005970d-01, | |
1805 | $ 6.970757d-01, 7.854861d-01, 8.622089d-01, 9.241033d-01, | |
1806 | $ 9.686367d-01, 9.939963d-01/ | |
1807 | DATA (XW(i),i=1,GN)/1.537662d-02, | |
1808 | $ 3.518302d-02, 5.357961d-02, 6.978534d-02, 8.313460d-02, | |
1809 | $ 9.308050d-02, 9.921574d-02, 1.012891d-01, 9.921574d-02, | |
1810 | $ 9.308050d-02, 8.313460d-02, 6.978534d-02, 5.357961d-02, | |
1811 | $ 3.518302d-02, 1.537662d-02/ | |
1812 | c local | |
1813 | DOUBLE PRECISION sum, y,z,beta,w,WHIT4G,L | |
1814 | parameter(L=4.0d0) | |
1815 | DOUBLE PRECISION x1,rx,z1,rz | |
1816 | c | |
1817 | c begin | |
1818 | x1=1.0d0-x | |
1819 | rx=4.0d0*r*x | |
1820 | c | |
1821 | c direct | |
1822 | beta=dsqrt(1.0d0-rx/x1) | |
1823 | w=x*( beta*(-1.0d0+8.0d0*x*x1-rx*x1) | |
1824 | $ +(x**2+x1**2+rx*(1.0d0-3.0d0*x)-0.5d0*rx**2) | |
1825 | $ * log( (1.0d0+beta)/(1.0d0-beta) )) | |
1826 | cv = 3.0d0*ec**2 * w / x | |
1827 | c | |
1828 | c resolved | |
1829 | sum=0.0d0 | |
1830 | do 10 i=1,GN | |
1831 | y= x+rx + (x1-rx)*XG(i)**L | |
1832 | z=x/y | |
1833 | z1=1.0d0-z | |
1834 | rz=4.0d0*r*z | |
1835 | beta=dsqrt(1.0d0-rz/z1) | |
1836 | w=z*( beta*(-1.0d0+8.0d0*z*z1-rz*z1) | |
1837 | $ +(z**2+z1**2+rz*(1.0d0-3.0d0*z)-0.5d0*rz**2) | |
1838 | $ * log( (1.0d0+beta)/(1.0d0-beta) )) | |
1839 | c | |
1840 | sum= sum + w * WHIT4G(y,mc**2/r)* L*XG(i)**(L-1.0d0)*XW(i) | |
1841 | c | |
1842 | 10 continue | |
1843 | c | |
1844 | cs = 0.5d0/x * (x1-rx) * sum | |
1845 | c | |
1846 | return | |
1847 | end | |
1848 | c | |
1849 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
1850 | DOUBLE PRECISION function WHIT5G(x,Q2) | |
1851 | c input: x,Q2 | |
1852 | c output: clg | |
1853 | c (gluon dist.) | |
1854 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
1855 | implicit none | |
1856 | c arg | |
1857 | DOUBLE PRECISION Q2,x | |
1858 | c const | |
1859 | DOUBLE PRECISION q42it,q52it,lam42,lam52 | |
1860 | DOUBLE PRECISION alinv | |
1861 | c local | |
1862 | DOUBLE PRECISION A0g,B0g,C0g,A1g,AA1g,B1g,C1g | |
1863 | DOUBLE PRECISION s,s2,s3,s4,prsccf | |
1864 | DOUBLE PRECISION x1 | |
1865 | c parameters | |
1866 | parameter(lam42=0.16d0, lam52=0.091411319d0) | |
1867 | parameter(Q42IT=4.0d0, Q52IT=100.0d0) | |
1868 | parameter(alinv=137.036d0) | |
1869 | common /scale/ s,s2,s3,s4,prsccf | |
1870 | c | |
1871 | c begin | |
1872 | x1=1.0d0-x | |
1873 | c | |
1874 | if(Q2.lt.100.0d0) then | |
1875 | c under 100 GeV^2 | |
1876 | c | |
1877 | cccccc WHIT5 gluon (U100) | |
1878 | c | |
1879 | A0g = 1.000000d+01+s*(-3.400000d+01)+s2*( 6.900000d+01) | |
1880 | $ +s3*(-7.530000d+01)+s4*( 3.230000d+01) | |
1881 | B0g = s*(-1.126000d+00)+s2*( 9.260000d-01) | |
1882 | $ +s3*(-3.930000d-01) | |
1883 | C0g = 9.000000d+00+s*( 4.810000d-01)+s2*( 3.200000d+00) | |
1884 | $ +s3*(-3.470000d-01) | |
1885 | A1g = s*( 6.020000d-01)+s2*( 5.090000d-01) | |
1886 | $ +s3*(-2.054000d+00)+s4*( 1.392000d+00) | |
1887 | AA1g= s*(-9.220000d-02)+s2*(-1.899000d+00) | |
1888 | $ +s3*( 4.180000d+00)+s4*(-2.494000d+00) | |
1889 | B1g =-2.895000d-01+s*( 3.760000d-01)+s2*(-1.719000d+00) | |
1890 | $ +s3*( 1.116000d+00) | |
1891 | C1g = 1.439000d+00+s*(-5.570000d-01)+s2*( 3.660000d-01) | |
1892 | $ +s3*( 7.330000d-01)+s4*(-7.620000d-01) | |
1893 | else | |
1894 | c over 100 GeV^2 | |
1895 | c | |
1896 | cccccc WHIT5 gluon (O100) | |
1897 | c | |
1898 | A0g = 1.995000d+00+s*(-3.260000d+00)+s2*( 1.818000d+00) | |
1899 | $ +s3*( 1.711000d+00)+s4*(-4.990000d+00) | |
1900 | B0g =-4.660000d-01+s*(-6.100000d-01)+s2*( 1.691000d+00) | |
1901 | $ +s3*(-6.680000d+00)+s4*( 1.019000d+01) | |
1902 | C0g = 1.075000d+01+s*( 5.420000d+00)+s2*( 6.550000d+00) | |
1903 | $ +s3*(-2.297000d+01)+s4*( 1.867000d+01) | |
1904 | A1g = 2.992000d-01+s*( 1.179000d+00)+s2*(-1.915000d+00) | |
1905 | $ +s3*( 7.260000d+00)+s4*(-1.839000d+01) | |
1906 | AA1g=-1.600000d-01+s*(-1.114000d+00)+s2*( 2.939000d+00) | |
1907 | $ +s3*(-6.660000d+00)+s4*( 1.923000d+01) | |
1908 | B1g =-4.830000d-01+s*( 7.550000d-01)+s2*(-3.800000d+00) | |
1909 | $ +s3*( 1.075000d+01)+s4*(-1.993000d+01) | |
1910 | C1g = 1.297000d+00+s*(-1.669000d-01)+s2*( 1.906000d+00) | |
1911 | $ +s3*(-2.057000d+00) | |
1912 | endif | |
1913 | c | |
1914 | WHIT5G = prsccf/alinv/x* | |
1915 | $ ( A0g * x**B0g * x1**C0g | |
1916 | $ +(A1g+AA1g*x) * x**B1g * x1**C1g ) | |
1917 | c | |
1918 | return | |
1919 | end | |
1920 | c | |
1921 | cccccccccccccccccccccccccccccc | |
1922 | c QPM calculation | |
1923 | subroutine WHIT5Q(x,r,cv,cs) | |
1924 | ccc INPUTS : x,r=mc^2/Q^2 | |
1925 | ccc OUTPUTS: cv,cs (valence- and sea- charm quark dist) | |
1926 | ccc cv <-- cv / ( alpha / 2PI) | |
1927 | ccc cs <-- cs / ( alpha_s/2PI) | |
1928 | c | |
1929 | implicit none | |
1930 | c arg | |
1931 | DOUBLE PRECISION x,r | |
1932 | DOUBLE PRECISION cv,cs | |
1933 | c CONST | |
1934 | DOUBLE PRECISION ec,mc | |
1935 | parameter(ec=2.0d0/3.0d0,mc=1.5d0) | |
1936 | c N=15 Gauss int. weights and points | |
1937 | integer GN,i | |
1938 | parameter(GN=15) | |
1939 | DOUBLE PRECISION XG(GN), XW(GN) | |
1940 | DATA (XG(i),i=1,GN)/6.003741d-03, | |
1941 | $ 3.136330d-02, 7.589671d-02, 1.377911d-01, 2.145139d-01, | |
1942 | $ 3.029243d-01, 3.994030d-01, 5.000000d-01, 6.005970d-01, | |
1943 | $ 6.970757d-01, 7.854861d-01, 8.622089d-01, 9.241033d-01, | |
1944 | $ 9.686367d-01, 9.939963d-01/ | |
1945 | DATA (XW(i),i=1,GN)/1.537662d-02, | |
1946 | $ 3.518302d-02, 5.357961d-02, 6.978534d-02, 8.313460d-02, | |
1947 | $ 9.308050d-02, 9.921574d-02, 1.012891d-01, 9.921574d-02, | |
1948 | $ 9.308050d-02, 8.313460d-02, 6.978534d-02, 5.357961d-02, | |
1949 | $ 3.518302d-02, 1.537662d-02/ | |
1950 | c local | |
1951 | DOUBLE PRECISION sum, y,z,beta,w,WHIT5G,L | |
1952 | parameter(L=4.0d0) | |
1953 | DOUBLE PRECISION x1,rx,z1,rz | |
1954 | c | |
1955 | c begin | |
1956 | x1=1.0d0-x | |
1957 | rx=4.0d0*r*x | |
1958 | c | |
1959 | c direct | |
1960 | beta=dsqrt(1.0d0-rx/x1) | |
1961 | w=x*( beta*(-1.0d0+8.0d0*x*x1-rx*x1) | |
1962 | $ +(x**2+x1**2+rx*(1.0d0-3.0d0*x)-0.5d0*rx**2) | |
1963 | $ * log( (1.0d0+beta)/(1.0d0-beta) )) | |
1964 | cv = 3.0d0*ec**2 * w / x | |
1965 | c | |
1966 | c resolved | |
1967 | sum=0.0d0 | |
1968 | do 10 i=1,GN | |
1969 | y= x+rx + (x1-rx)*XG(i)**L | |
1970 | z=x/y | |
1971 | z1=1.0d0-z | |
1972 | rz=4.0d0*r*z | |
1973 | beta=dsqrt(1.0d0-rz/z1) | |
1974 | w=z*( beta*(-1.0d0+8.0d0*z*z1-rz*z1) | |
1975 | $ +(z**2+z1**2+rz*(1.0d0-3.0d0*z)-0.5d0*rz**2) | |
1976 | $ * log( (1.0d0+beta)/(1.0d0-beta) )) | |
1977 | c | |
1978 | sum= sum + w * WHIT5G(y,mc**2/r)* L*XG(i)**(L-1.0d0)*XW(i) | |
1979 | c | |
1980 | 10 continue | |
1981 | c | |
1982 | cs = 0.5d0/x * (x1-rx) * sum | |
1983 | c | |
1984 | return | |
1985 | end | |
1986 | c | |
1987 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
1988 | DOUBLE PRECISION function WHIT6G(x,Q2) | |
1989 | c input: x,Q2 | |
1990 | c output: clg | |
1991 | c (gluon dist.) | |
1992 | ccccccccccccccccccccccccccccccccccccccccccccccccccccccc | |
1993 | implicit none | |
1994 | c arg | |
1995 | DOUBLE PRECISION Q2,x | |
1996 | c const | |
1997 | DOUBLE PRECISION q42it,q52it,lam42,lam52 | |
1998 | DOUBLE PRECISION alinv | |
1999 | c local | |
2000 | DOUBLE PRECISION A0g,B0g,C0g,A1g,AA1g,B1g,C1g | |
2001 | DOUBLE PRECISION s,s2,s3,s4,prsccf | |
2002 | DOUBLE PRECISION x1 | |
2003 | c parameters | |
2004 | parameter(lam42=0.16d0, lam52=0.091411319d0) | |
2005 | parameter(Q42IT=4.0d0, Q52IT=100.0d0) | |
2006 | parameter(alinv=137.036d0) | |
2007 | common /scale/ s,s2,s3,s4,prsccf | |
2008 | c | |
2009 | c begin | |
2010 | x1=1.0d0-x | |
2011 | c | |
2012 | if(Q2.lt.100.0d0) then | |
2013 | c under 100 GeV^2 | |
2014 | c | |
2015 | cccccc WHIT6 gluon (U100) | |
2016 | c | |
2017 | A0g = 1.600000d+01+s*(-6.100000d+01)+s2*( 1.278000d+02) | |
2018 | $ +s3*(-1.399000d+02)+s4*( 5.990000d+01) | |
2019 | B0g = s*(-1.109000d+00)+s2*( 8.450000d-01) | |
2020 | $ +s3*(-3.510000d-01) | |
2021 | C0g = 1.500000d+01+s*( 1.596000d-01)+s2*( 4.180000d+00) | |
2022 | $ +s3*(-1.765000d-01) | |
2023 | A1g = s*( 6.020000d-01)+s2*( 5.090000d-01) | |
2024 | $ +s3*(-2.054000d+00)+s4*( 1.392000d+00) | |
2025 | AA1g= s*(-9.220000d-02)+s2*(-1.899000d+00) | |
2026 | $ +s3*( 4.180000d+00)+s4*(-2.494000d+00) | |
2027 | B1g =-2.895000d-01+s*( 3.760000d-01)+s2*(-1.719000d+00) | |
2028 | $ +s3*( 1.116000d+00) | |
2029 | C1g = 1.439000d+00+s*(-5.570000d-01)+s2*( 3.660000d-01) | |
2030 | $ +s3*( 7.330000d-01)+s4*(-7.620000d-01) | |
2031 | else | |
2032 | c over 100 GeV^2 | |
2033 | c | |
2034 | cccccc WHIT6 gluon (O100) | |
2035 | c | |
2036 | A0g = 2.378000d+00+s*(-4.380000d+00)+s2*( 5.850000d-01) | |
2037 | $ +s3*( 8.340000d+00)+s4*(-9.920000d+00) | |
2038 | B0g =-4.790000d-01+s*(-6.070000d-01)+s2*( 1.458000d+00) | |
2039 | $ +s3*(-6.030000d+00)+s4*( 9.330000d+00) | |
2040 | C0g = 1.706000d+01+s*( 4.960000d+00)+s2*( 2.497000d+01) | |
2041 | $ +s3*(-1.582000d+02)+s4*( 2.954000d+02) | |
2042 | A1g = 2.992000d-01+s*( 1.179000d+00)+s2*(-1.915000d+00) | |
2043 | $ +s3*( 7.260000d+00)+s4*(-1.839000d+01) | |
2044 | AA1g=-1.600000d-01+s*(-1.114000d+00)+s2*( 2.939000d+00) | |
2045 | $ +s3*(-6.660000d+00)+s4*( 1.923000d+01) | |
2046 | B1g =-4.830000d-01+s*( 7.550000d-01)+s2*(-3.800000d+00) | |
2047 | $ +s3*( 1.075000d+01)+s4*(-1.993000d+01) | |
2048 | C1g = 1.297000d+00+s*(-1.669000d-01)+s2*( 1.906000d+00) | |
2049 | $ +s3*(-2.057000d+00) | |
2050 | endif | |
2051 | c | |
2052 | WHIT6G = prsccf/alinv/x* | |
2053 | $ ( A0g * x**B0g * x1**C0g | |
2054 | $ +(A1g+AA1g*x) * x**B1g * x1**C1g ) | |
2055 | c | |
2056 | return | |
2057 | end | |
2058 | c | |
2059 | cccccccccccccccccccccccccccccc | |
2060 | c QPM calculation | |
2061 | subroutine WHIT6Q(x,r,cv,cs) | |
2062 | ccc INPUTS : x,r=mc^2/Q^2 | |
2063 | ccc OUTPUTS: cv,cs (valence- and sea- charm quark dist) | |
2064 | ccc cv <-- cv / ( alpha / 2PI) | |
2065 | ccc cs <-- cs / ( alpha_s/2PI) | |
2066 | c | |
2067 | implicit none | |
2068 | c arg | |
2069 | DOUBLE PRECISION x,r | |
2070 | DOUBLE PRECISION cv,cs | |
2071 | c CONST | |
2072 | DOUBLE PRECISION ec,mc | |
2073 | parameter(ec=2.0d0/3.0d0,mc=1.5d0) | |
2074 | c N=15 Gauss int. weights and points | |
2075 | integer GN,i | |
2076 | parameter(GN=15) | |
2077 | DOUBLE PRECISION XG(GN), XW(GN) | |
2078 | DATA (XG(i),i=1,GN)/6.003741d-03, | |
2079 | $ 3.136330d-02, 7.589671d-02, 1.377911d-01, 2.145139d-01, | |
2080 | $ 3.029243d-01, 3.994030d-01, 5.000000d-01, 6.005970d-01, | |
2081 | $ 6.970757d-01, 7.854861d-01, 8.622089d-01, 9.241033d-01, | |
2082 | $ 9.686367d-01, 9.939963d-01/ | |
2083 | DATA (XW(i),i=1,GN)/1.537662d-02, | |
2084 | $ 3.518302d-02, 5.357961d-02, 6.978534d-02, 8.313460d-02, | |
2085 | $ 9.308050d-02, 9.921574d-02, 1.012891d-01, 9.921574d-02, | |
2086 | $ 9.308050d-02, 8.313460d-02, 6.978534d-02, 5.357961d-02, | |
2087 | $ 3.518302d-02, 1.537662d-02/ | |
2088 | c local | |
2089 | DOUBLE PRECISION sum, y,z,beta,w,WHIT6G,L | |
2090 | parameter(L=4.0d0) | |
2091 | DOUBLE PRECISION x1,rx,z1,rz | |
2092 | c | |
2093 | c begin | |
2094 | x1=1.0d0-x | |
2095 | rx=4.0d0*r*x | |
2096 | c | |
2097 | c direct | |
2098 | beta=dsqrt(1.0d0-rx/x1) | |
2099 | w=x*( beta*(-1.0d0+8.0d0*x*x1-rx*x1) | |
2100 | $ +(x**2+x1**2+rx*(1.0d0-3.0d0*x)-0.5d0*rx**2) | |
2101 | $ * log( (1.0d0+beta)/(1.0d0-beta) )) | |
2102 | cv = 3.0d0*ec**2 * w / x | |
2103 | c | |
2104 | c resolved | |
2105 | sum=0.0d0 | |
2106 | do 10 i=1,GN | |
2107 | y= x+rx + (x1-rx)*XG(i)**L | |
2108 | z=x/y | |
2109 | z1=1.0d0-z | |
2110 | rz=4.0d0*r*z | |
2111 | beta=dsqrt(1.0d0-rz/z1) | |
2112 | w=z*( beta*(-1.0d0+8.0d0*z*z1-rz*z1) | |
2113 | $ +(z**2+z1**2+rz*(1.0d0-3.0d0*z)-0.5d0*rz**2) | |
2114 | $ * log( (1.0d0+beta)/(1.0d0-beta) )) | |
2115 | c | |
2116 | sum= sum + w * WHIT6G(y,mc**2/r)* L*XG(i)**(L-1.0d0)*XW(i) | |
2117 | c | |
2118 | 10 continue | |
2119 | c | |
2120 | cs = 0.5d0/x * (x1-rx) * sum | |
2121 | c | |
2122 | return | |
2123 | end |