1 //--------------------------------------------------------------------------
4 // This software is part of the EvtGen package developed jointly
5 // for the BaBar and CLEO collaborations. If you use all or part
6 // of it, please give an appropriate acknowledgement.
8 // Copyright Information: See EvtGen/COPYRIGHT
9 // Copyright (C) 1998 Caltech, UCSB
11 // Module: EvtISGW2FF.cc
13 // Description: Routine to implement semileptonic form factors
14 // according to the model ISGW2
16 // Modification history:
18 // DJL April 17, 1998 Module created
20 //------------------------------------------------------------------------
22 #include "EvtGenBase/EvtPatches.hh"
23 #include "EvtGenBase/EvtPatches.hh"
24 #include "EvtGenBase/EvtReport.hh"
25 #include "EvtGenModels/EvtISGW2FF.hh"
26 #include "EvtGenBase/EvtPDL.hh"
27 #include "EvtGenBase/EvtId.hh"
28 #include "EvtGenBase/EvtIdSet.hh"
29 #include "EvtGenBase/EvtConst.hh"
35 void EvtISGW2FF::getscalarff(EvtId parent,EvtId daught,
36 double t, double mass, double *fpf,
39 //added by Lange Jan4,2000
40 static EvtId D0=EvtPDL::getId("D0");
41 static EvtId D0B=EvtPDL::getId("anti-D0");
42 static EvtId DP=EvtPDL::getId("D+");
43 static EvtId DM=EvtPDL::getId("D-");
45 static EvtId D3P0P=EvtPDL::getId("D_0*+");
46 static EvtId D3P0N=EvtPDL::getId("D_0*-");
47 static EvtId D3P00=EvtPDL::getId("D_0*0");
48 static EvtId D3P0B=EvtPDL::getId("anti-D_0*0");
50 static EvtId D21S0P=EvtPDL::getId("D(2S)+");
51 static EvtId D21S0N=EvtPDL::getId("D(2S)-");
52 static EvtId D21S00=EvtPDL::getId("D(2S)0");
53 static EvtId D21S0B=EvtPDL::getId("anti-D(2S)0");
55 static EvtId ETA2S=EvtPDL::getId("eta(2S)");
57 static EvtId PI2S0=EvtPDL::getId("pi(2S)0");
58 static EvtId PI2SP=EvtPDL::getId("pi(2S)+");
59 static EvtId PI2SM=EvtPDL::getId("pi(2S)-");
61 static EvtId PIP=EvtPDL::getId("pi+");
62 static EvtId PIM=EvtPDL::getId("pi-");
63 static EvtId PI0=EvtPDL::getId("pi0");
66 static EvtId A0P=EvtPDL::getId("a_0+");
67 static EvtId A0M=EvtPDL::getId("a_0-");
68 static EvtId A00=EvtPDL::getId("a_00");
70 static EvtId F0=EvtPDL::getId("f_0");
71 static EvtId F0PR=EvtPDL::getId("f'_0");
73 static EvtId ETA=EvtPDL::getId("eta");
74 static EvtId ETAPR=EvtPDL::getId("eta'");
76 static EvtId KP=EvtPDL::getId("K+");
77 static EvtId KM=EvtPDL::getId("K-");
78 static EvtId K0=EvtPDL::getId("K0");
79 static EvtId KB=EvtPDL::getId("anti-K0");
80 static EvtId K0S=EvtPDL::getId("K_S0");
81 static EvtId K0L=EvtPDL::getId("K_L0");
83 static EvtId K0STP=EvtPDL::getId("K_0*+");
84 static EvtId K0STM=EvtPDL::getId("K_0*-");
85 static EvtId K0ST0=EvtPDL::getId("K_0*0");
86 static EvtId K0STB=EvtPDL::getId("anti-K_0*0");
88 static EvtId DSP=EvtPDL::getId("D_s+");
89 static EvtId DSM=EvtPDL::getId("D_s-");
91 static EvtId D3P0SP=EvtPDL::getId("D_s0*+");
92 static EvtId D3P0SN=EvtPDL::getId("D_s0*-");
95 double mb=EvtPDL::getMeanMass(parent);
97 if (daught==PI0||daught==PIP||daught==PIM||daught==ETA||
98 daught==ETAPR||daught==D0||daught==D0B||daught==DP||
99 daught==DM||daught==KP||daught==KM||daught==K0||daught==K0S||
100 daught==K0L||daught==KB||daught==DSP||daught==DSM) {
102 EvtISGW2FF1S0(parent,daught,t,mass,fpf,&fmf);
105 if (daught==PI2S0||daught==PI2SP||daught==PI2SM||daught==ETA2S||
106 daught==D21S0P||daught==D21S0B||daught==D21S0N||daught==D21S00){
107 EvtISGW2FF21S0(parent,daught,t,mass,fpf,&fmf);
110 if (daught==A00||daught==A0P||daught==A0M||daught==F0||
111 daught==F0PR||daught==D3P0P||daught==D3P00||daught==D3P0B||
112 daught==D3P0N||daught==K0STM||daught==K0STB||daught==K0STP||
113 daught==D3P0SP||daught==D3P0SN||
115 EvtISGW2FF3P0(parent,daught,t,mass,fpf,&fmf);
118 *f0f = (fmf/((mb*mb-mass*mass)/t))+(*fpf);
123 void EvtISGW2FF::gettensorff(EvtId parent,EvtId daught,
124 double t, double mass, double *hf,
125 double *kf, double *bpf, double *bmf ){
127 //added by Lange Jan4,2000
128 EvtISGW2FF3P2(parent,daught,t,mass,hf,kf,bpf,bmf);
135 void EvtISGW2FF::getvectorff(EvtId parent,EvtId daught,
136 double t, double mass, double *a1f,
137 double *a2f, double *vf, double *a0f ){
138 double ff,gf,apf,amf;
140 //added by Lange Jan4,2000
142 static EvtId DST0=EvtPDL::getId("D*0");
143 static EvtId DSTB=EvtPDL::getId("anti-D*0");
144 static EvtId DSTP=EvtPDL::getId("D*+");
145 static EvtId DSTM=EvtPDL::getId("D*-");
148 static EvtId D1P1P=EvtPDL::getId("D_1+");
149 static EvtId D1P1N=EvtPDL::getId("D_1-");
150 static EvtId D1P10=EvtPDL::getId("D_10");
151 static EvtId D1P1B=EvtPDL::getId("anti-D_10");
153 static EvtId D3P1P=EvtPDL::getId("D'_1+");
154 static EvtId D3P1N=EvtPDL::getId("D'_1-");
155 static EvtId D3P10=EvtPDL::getId("D'_10");
156 static EvtId D3P1B=EvtPDL::getId("anti-D'_10");
158 static EvtId D23S1P=EvtPDL::getId("D*(2S)+");
159 static EvtId D23S1N=EvtPDL::getId("D*(2S)-");
160 static EvtId D23S10=EvtPDL::getId("D*(2S)0");
161 static EvtId D23S1B=EvtPDL::getId("anti-D*(2S)0");
163 static EvtId RHO2S0=EvtPDL::getId("rho(2S)0");
164 static EvtId RHO2SP=EvtPDL::getId("rho(2S)+");
165 static EvtId RHO2SM=EvtPDL::getId("rho(2S)-");
166 static EvtId OMEG2S=EvtPDL::getId("omega(2S)");
168 static EvtId RHOP=EvtPDL::getId("rho+");
169 static EvtId RHOM=EvtPDL::getId("rho-");
170 static EvtId RHO0=EvtPDL::getId("rho0");
172 static EvtId A1P=EvtPDL::getId("a_1+");
173 static EvtId A1M=EvtPDL::getId("a_1-");
174 static EvtId A10=EvtPDL::getId("a_10");
176 static EvtId B1P=EvtPDL::getId("b_1+");
177 static EvtId B1M=EvtPDL::getId("b_1-");
178 static EvtId B10=EvtPDL::getId("b_10");
180 static EvtId H1=EvtPDL::getId("h_1");
181 static EvtId H1PR=EvtPDL::getId("h'_1");
183 static EvtId F1=EvtPDL::getId("f_1");
184 static EvtId F1PR=EvtPDL::getId("f'_1");
186 static EvtId OMEG=EvtPDL::getId("omega");
187 static EvtId KSTP=EvtPDL::getId("K*+");
188 static EvtId KSTM=EvtPDL::getId("K*-");
189 static EvtId KST0=EvtPDL::getId("K*0");
190 static EvtId KSTB=EvtPDL::getId("anti-K*0");
192 static EvtId K1P=EvtPDL::getId("K_1+");
193 static EvtId K1M=EvtPDL::getId("K_1-");
194 static EvtId K10=EvtPDL::getId("K_10");
195 static EvtId K1B=EvtPDL::getId("anti-K_10");
197 static EvtId K1STP=EvtPDL::getId("K'_1+");
198 static EvtId K1STM=EvtPDL::getId("K'_1-");
199 static EvtId K1ST0=EvtPDL::getId("K'_10");
200 static EvtId K1STB=EvtPDL::getId("anti-K'_10");
202 static EvtId PHI=EvtPDL::getId("phi");
204 static EvtId D1P1SP=EvtPDL::getId("D_s1+");
205 static EvtId D1P1SN=EvtPDL::getId("D_s1-");
207 static EvtId D3P1SP=EvtPDL::getId("D'_s1+");
208 static EvtId D3P1SN=EvtPDL::getId("D'_s1-");
210 static EvtId DSSTP=EvtPDL::getId("D_s*+");
211 static EvtId DSSTM=EvtPDL::getId("D_s*-");
213 if (daught==DST0||daught==DSTP||daught==DSTM||daught==DSTB||
214 daught==OMEG||daught==RHO0||daught==RHOM||daught==RHOP||
215 daught==KSTP||daught==KSTM||daught==KST0||daught==KSTB||
216 daught==PHI||daught==DSSTP||daught==DSSTM) {
217 EvtISGW2FF3S1(parent,daught,t,mass,&ff,&gf,&apf,&amf);
219 if (daught==B10||daught==B1P||daught==B1M||daught==H1||
220 daught==H1PR||daught==D1P1P||daught==D1P10||daught==D1P1B||
221 daught==D1P1SP||daught==D1P1SN||
222 daught==D1P1N||daught==K10||daught==K1B||daught==K1P||
224 EvtISGW2FF1P1(parent,daught,t,mass,&ff,&gf,&apf,&amf);
226 if (daught==RHO2S0||daught==RHO2SP||daught==RHO2SM||daught==OMEG2S||
227 daught==D23S1P||daught==D23S1B||daught==D23S1N||daught==D23S10){
228 EvtISGW2FF23S1(parent,daught,t,mass,&ff,&gf,&apf,&amf);
230 if (daught==A10||daught==A1P||daught==A1M||daught==F1||
231 daught==F1PR||daught==D3P1P||daught==D3P10||daught==D3P1B||
232 daught==D3P1N||daught==K1STM||daught==K1STB||daught==K1STP||
233 daught==D3P1SP||daught==D3P1SN||
235 EvtISGW2FF3P1(parent,daught,t,mass,&ff,&gf,&apf,&amf);
238 // Need to stuff in some factors to make these the ffs that
239 // is used elsewhere...
241 double mb=EvtPDL::getMeanMass(parent);
244 *vf = (gf)*(mb+mass);
245 *a1f = (ff)/(mb+mass);
246 *a2f = -1.0*(apf)*(mb+mass);
248 double a3f = ((mb+mass)/(2.0*mass))*(*a1f) -
249 ((mb-mass)/(2.0*mass))*(*a2f);
251 *a0f = a3f + ( (t*amf)/(2.0*mass));
258 void EvtISGW2FF::EvtISGW2FF1S0 (EvtId parent,EvtId daugt,
259 double t, double mass, double *fpf, double *fmf ) {
261 double mtb, mbb(0.0);
262 double msd(0.0), mx,mb,nf(0.0),nfp(0.0);
263 double msq(0.0),bx2(0.0),mbx(0.0),mtx;
264 double zji,cji,gammaji,chiji,betaji_fppfm;
265 double rfppfm,rfpmfm,f3fppfm,f3fpmfm,fppfm,fpmfm,ai,f3;
266 double mqm,msb(0.0),bb2(0.0),mup,bbx2,tm,r2,betaji_fpmfm;
271 //added by Lange Jan4,2000
272 static EvtIdSet theB("B+","B-","B0","anti-B0");
274 static EvtId D0=EvtPDL::getId("D0");
275 static EvtId D0B=EvtPDL::getId("anti-D0");
276 static EvtId DP=EvtPDL::getId("D+");
277 static EvtId DM=EvtPDL::getId("D-");
279 static EvtId PIP=EvtPDL::getId("pi+");
280 static EvtId PIM=EvtPDL::getId("pi-");
281 static EvtId PI0=EvtPDL::getId("pi0");
283 static EvtId ETA=EvtPDL::getId("eta");
284 static EvtId ETAPR=EvtPDL::getId("eta'");
286 static EvtId KP=EvtPDL::getId("K+");
287 static EvtId KM=EvtPDL::getId("K-");
288 static EvtId K0=EvtPDL::getId("K0");
289 static EvtId KB=EvtPDL::getId("anti-K0");
290 static EvtId K0S=EvtPDL::getId("K_S0");
291 static EvtId K0L=EvtPDL::getId("K_L0");
293 static EvtId DSP=EvtPDL::getId("D_s+");
294 static EvtId DSM=EvtPDL::getId("D_s-");
296 static EvtId BSB=EvtPDL::getId("anti-B_s0");
297 static EvtId BS0=EvtPDL::getId("B_s0");
299 if (theB.contains(prnt)) {
307 if (dgt==PI0||dgt==PIP||dgt==PIM||dgt==ETA||dgt==ETAPR) {
311 mbx=0.75*0.770+0.25*0.14;
315 if (dgt==D0||dgt==D0B||dgt==DP||dgt==DM) {
318 mbx=0.75*2.01+0.25*1.87;
322 report(ERROR,"EvtGen") << "Not implemented daugt:"<<daugt.getId()<<" in get_isgw_ff_1S0.\n";
327 if (prnt==D0||prnt==D0B||prnt==DP||prnt==DM) {
334 if (dgt==PIP||dgt==PIM||dgt==PI0||dgt==ETA||dgt==ETAPR) {
337 mbx=0.75*0.770+0.25*0.14;
341 if (dgt==K0||dgt==K0S||dgt==K0L||dgt==KB||dgt==KP||dgt==KM) {
344 mbx=0.75*0.892+0.25*0.49767;
348 report(ERROR,"EvtGen") << "Not implemented daugt:"<<daugt.getId()<<" in get_isgw_ff_1S0.\n";
353 if (prnt==DSP||prnt==DSM){
360 if (dgt==K0||dgt==K0S||dgt==K0L||dgt==KB) {
364 mbx=0.75*0.770+0.25*0.14;
368 if (dgt==PI0||dgt==ETA||dgt==ETAPR) {
371 mbx=0.75*0.892+0.25*0.49767;
376 report(ERROR,"EvtGen") << "Not implemented daugt:"<<daugt.getId()<<" in get_isgw_ff_1S0.\n";
381 //BS -> cs constants added by djl on Jan. 21,1998
382 if (prnt==BS0||prnt==BSB){
390 if (dgt==DSP||dgt==DSM) {
394 mbx=0.75*2.11+0.25*1.97;
397 else if (dgt==KP||dgt==KM) {
401 mbx=0.75*0.892+0.25*0.49767;
405 report(ERROR,"EvtGen") << "Not implemented daugt:"<<daugt.getId()<<" in get_isgw_ff_1S0.\n";
410 report(ERROR,"EvtGen") << "Not implemented parent in get_isgw_ff_1S0.\n";
411 report(ERROR,"EvtGen") << "Parent:"<<parent.getId()<<endl;
419 mb=EvtPDL::getMeanMass(parent);
422 mup=1.0/(1.0/msq+1.0/msb);
425 if ( t>tm ) t=0.99*tm;
428 r2=3.0/(4.0*msb*msq)+3*msd*msd/(2*mbb*mbx*bbx2) +
429 (16.0/(mbb*mbx*(33.0-2.0*nfp)))*
430 log(EvtGetas(mqm,mqm)/EvtGetas(msq,msq));
432 f3 = sqrt(mtx/mtb)*pow(sqrt(bx2*bb2)/bbx2,1.5) /
433 ((1.0+r2*(tm-t)/12.0)*(1.0+r2*(tm-t)/12.0));
435 // for w use wt def with physical masses.
436 // report(ERROR,"EvtGen") << "before w\n";
438 ai = -1.0* ( 6.0/( 33.0 - 2.0*nf));
439 cji = pow(( EvtGetas( msb,msb ) / EvtGetas( msq,msq ) ),ai);
443 gammaji = EvtGetGammaji( zji );
444 chiji = -1.0 - ( gammaji / ( 1- zji ));
445 betaji_fppfm = gammaji - (2.0/3.0)*chiji;
446 betaji_fpmfm = gammaji + (2.0/3.0)*chiji;
447 rfppfm = cji *(1.0 + betaji_fppfm*EvtGetas( msq,sqrt(msb*msq) )/EvtConst::pi);
448 rfpmfm = cji *(1.0 + betaji_fpmfm*EvtGetas( msq,sqrt(msb*msq) )/EvtConst::pi);
449 f3fppfm = f3*pow(( mbb / mtb ),-0.5)*pow((mbx/mtx),0.5);
450 f3fpmfm = f3*pow(( mbb / mtb ),0.5)*pow((mbx/mtx),-0.5);
451 fppfm = f3fppfm* rfppfm * ( 2.0 - ( ( mtx/msq)*(1- ( (msd*msq*bb2)
452 /(2.0*mup*mtx*bbx2)))));
453 fpmfm = f3fpmfm* rfpmfm * ( mtb/msq) * ( 1 - ( ( msd*msq*bb2)/
454 ( 2.0*mup*mtx*bbx2)));
456 *fpf = (fppfm + fpmfm)/2.0;
457 *fmf = (fppfm - fpmfm)/2.0;
466 void EvtISGW2FF::EvtISGW2FF3S1(EvtId parent,EvtId daugt,double t,double mass,
467 double *f,double *g,double *ap,double *am){
469 //added by Lange Jan4,2000
470 static EvtId BP=EvtPDL::getId("B+");
471 static EvtId BM=EvtPDL::getId("B-");
472 static EvtId B0=EvtPDL::getId("B0");
473 static EvtId B0B=EvtPDL::getId("anti-B0");
475 static EvtId DST0=EvtPDL::getId("D*0");
476 static EvtId DSTB=EvtPDL::getId("anti-D*0");
477 static EvtId DSTP=EvtPDL::getId("D*+");
478 static EvtId DSTM=EvtPDL::getId("D*-");
479 static EvtId D0=EvtPDL::getId("D0");
480 static EvtId D0B=EvtPDL::getId("anti-D0");
481 static EvtId DP=EvtPDL::getId("D+");
482 static EvtId DM=EvtPDL::getId("D-");
484 static EvtId RHOP=EvtPDL::getId("rho+");
485 static EvtId RHOM=EvtPDL::getId("rho-");
486 static EvtId RHO0=EvtPDL::getId("rho0");
487 static EvtId OMEG=EvtPDL::getId("omega");
489 static EvtId KSTP=EvtPDL::getId("K*+");
490 static EvtId KSTM=EvtPDL::getId("K*-");
491 static EvtId KST0=EvtPDL::getId("K*0");
492 static EvtId KSTB=EvtPDL::getId("anti-K*0");
494 static EvtId PHI=EvtPDL::getId("phi");
495 static EvtId DSP=EvtPDL::getId("D_s+");
496 static EvtId DSM=EvtPDL::getId("D_s-");
498 static EvtId DSSTP=EvtPDL::getId("D_s*+");
499 static EvtId DSSTM=EvtPDL::getId("D_s*-");
501 static EvtId BSB=EvtPDL::getId("anti-B_s0");
502 static EvtId BS0=EvtPDL::getId("B_s0");
504 double cf(0.0),mtb,wt,msd(0.0),mup,f3f,msq(0.0),bb2(0.0),mum,mtx,bbx2,f3g;
505 double cji,bx2(0.0),f3appam,msb(0.0),tm,mbb(0.0),mbx(0.0);
506 double f3apmam,appam,apmam,mb,mx,f3;
507 double r_f,r_g,r_apmam, betaji_f,betaji_g;
508 double betaji_appam, betaji_apmam;
509 double mqm,r2,chiji,zji,ai,nf(0.0),nfp(0.0),gammaji;
514 if (parent==B0||parent==B0B||parent==BP||parent==BM) {
522 if (dgt==DST0||dgt==DSTP||dgt==DSTM||dgt==DSTB) {
527 mbx=0.75*2.01+0.25*1.87;
531 if (dgt==OMEG||dgt==RHO0||dgt==RHOM||dgt==RHOP) {
536 mbx=0.75*0.770+0.25*0.14;
540 report(ERROR,"EvtGen") << "Not implemented daugt:"<<daugt.getId()<<" in get_isgw_ff_3S1.\n";
545 if (prnt==D0||prnt==D0B||prnt==DP||prnt==DM) {
553 if (dgt==KSTP||dgt==KSTM||dgt==KST0||dgt==KSTB) {
558 mbx=0.75*0.892+0.25*0.494;
562 if (dgt==RHO0||dgt==OMEG||dgt==RHOM||dgt==RHOP) {
566 mbx=0.75*0.770+0.25*0.14;
570 report(ERROR,"EvtGen") << "Not implemented daugt:"<<daugt.getId()<<" in get_isgw_ff_3S1.\n";
575 if (prnt==DSP||prnt==DSM){
583 if (dgt==KSTB||dgt==KST0) {
600 report(ERROR,"EvtGen") << "Not implemented daugt:"<<daugt.getId()<<" in get_isgw_ff_3S1.\n";
605 //BS -> cs constants added by djl on Jan. 21,1998
606 if (prnt==BS0||prnt==BSB){
614 if (dgt==DSSTP||dgt==DSSTM) {
619 mbx=0.75*2.11+0.25*1.97;
622 else if (dgt==KSTP||dgt==KSTM||dgt==KST0||dgt==KSTB) {
627 mbx=0.75*0.892+0.25*0.494;
631 report(ERROR,"EvtGen") << "Not implemented daugt:"<<daugt.getId()<<" in get_isgw_ff_1S0.\n";
636 report(ERROR,"EvtGen") << "Not implemented parent in get_isgw2_ff_3S1.\n";
646 mup=1.0/(1.0/msq+1.0/msb);
647 mum=1.0/(1.0/msq-1.0/msb);
649 mb=EvtPDL::getMeanMass(parent);
652 if ( t > tm ) t = 0.99*tm;
654 wt=1.0+(tm-t)/(2.0*mbb*mbx);
657 r2=3.0/(4.0*msb*msq)+3*msd*msd/(2*mbb*mbx*bbx2) +
658 (16.0/(mbb*mbx*(33.0-2.0*nfp)))*
659 log(EvtGetas(mqm,mqm)/EvtGetas(msq,msq));
661 ai = -1.0* ( 6.0/( 33.0 - 2.0*nf));
663 cji = pow(( EvtGetas( msb,msb ) / EvtGetas( msq,msq ) ),ai);
666 gammaji = EvtGetGammaji( zji );
668 chiji = -1.0 - ( gammaji / ( 1- zji ));
670 betaji_g = (2.0/3.0)+gammaji;
671 betaji_f = (-2.0/3.0)+gammaji;
672 betaji_appam = -1.0-chiji+(4.0/(3.0*(1.0-zji)))+
673 (2.0*(1+zji)*gammaji/(3.0*(1.0-zji)*(1.0-zji)));
675 betaji_apmam = (1.0/3.0)-chiji-(4.0/(3.0*(1.0-zji)))-
676 (2.0*(1+zji)*gammaji/(3.0*(1.0-zji)*(1.0-zji)))+
679 r_g = cji*(1+(betaji_g*EvtGetas( msq,sqrt(mb*msq) )/(EvtConst::pi)));
680 r_f = cji*(1+(betaji_f*EvtGetas( msq,sqrt(mb*msq) )/(EvtConst::pi)));
681 r_apmam = cji*(1+(betaji_apmam*EvtGetas( msq,sqrt(mb*msq) )/(EvtConst::pi)));
684 f3=sqrt(mtx/mtb)*pow(sqrt(bx2*bb2)/bbx2,1.5)/
685 ((1.0+r2*(tm-t)/12.0)*(1.0+r2*(tm-t)/12.0));
687 f3f=sqrt(mbx*mbb/(mtx*mtb))*f3;
688 f3g=sqrt(mtx*mtb/(mbx*mbb))*f3;
689 f3appam=sqrt(mtb*mtb*mtb*mbx/(mbb*mbb*mbb*mtx))*f3;
690 f3apmam=sqrt(mtx*mtb/(mbx*mbb))*f3;
691 *f=cf*mtb*(1+wt+msd*(wt-1)/(2*mup))*f3f*r_f;
692 *g=0.5*(1/msq-msd*bb2/(2*mum*mtx*bbx2))*f3g*r_g;
694 appam=cji*(msd*bx2*(1-msd*bx2/(2*mtb*bbx2))/
695 ((1+wt)*msq*msb*bbx2)-
696 betaji_appam*EvtGetas( msq,sqrt(msq*mb) )/
697 (mtb*EvtConst::pi))*f3appam;
699 apmam=-1.0*(mtb/msb-msd*bx2/(2*mup*bbx2)+wt*msd*mtb*bx2*
700 (1-msd*bx2/(2*mtb*bbx2))/((wt+1)*msq*msb*bbx2))*
703 *ap=0.5*(appam+apmam);
704 *am=0.5*(appam-apmam);
709 void EvtISGW2FF::EvtISGW2FF21S0 (EvtId parent,EvtId daugt,
710 double t, double mass, double *fppf, double *fpmf ) {
712 //added by Lange Jan4,2000
713 static EvtId BP=EvtPDL::getId("B+");
714 static EvtId BM=EvtPDL::getId("B-");
715 static EvtId B0=EvtPDL::getId("B0");
716 static EvtId B0B=EvtPDL::getId("anti-B0");
718 static EvtId D0=EvtPDL::getId("D0");
719 static EvtId D0B=EvtPDL::getId("anti-D0");
720 static EvtId DP=EvtPDL::getId("D+");
721 static EvtId DM=EvtPDL::getId("D-");
723 static EvtId D21S0P=EvtPDL::getId("D(2S)+");
724 static EvtId D21S0N=EvtPDL::getId("D(2S)-");
725 static EvtId D21S00=EvtPDL::getId("D(2S)0");
726 static EvtId D21S0B=EvtPDL::getId("anti-D(2S)0");
728 static EvtId ETA2S=EvtPDL::getId("eta(2S)");
730 static EvtId PI2S0=EvtPDL::getId("pi(2S)0");
731 static EvtId PI2SP=EvtPDL::getId("pi(2S)+");
732 static EvtId PI2SM=EvtPDL::getId("pi(2S)-");
734 double mtb, mbb(0.0);
735 double msd(0.0), mx,mb,nfp(0.0);
736 double msq(0.0),bx2(0.0),mbx(0.0),mtx;
737 double f3fppfm,f3fpmfm,fppfm,fpmfm,f3;
739 double r2,wt,tm,bb2(0.0),bbx2;
740 double tau,udef,vdef;
745 if (prnt==B0||prnt==B0B||prnt==BP||prnt==BM) {
750 mbb=0.75*5.325+0.25*5.279;
752 if (dgt==PI2S0||dgt==PI2SP||dgt==PI2SM||dgt==ETA2S) {
756 mbx=0.75*1.45+0.25*1.300;
760 if (dgt==D21S0P||dgt==D21S0B||dgt==D21S0N||dgt==D21S00) {
763 mbx=0.75*2.64+0.25*2.58;
768 report(ERROR,"EvtGen") << "Not implemented daugt in get_EvtISGW2_ff_21S0.\n";
773 if (prnt==D0||prnt==D0B||prnt==DP||prnt==DM) {
778 if (dgt==PI2SP||dgt==PI2SM||dgt==PI2S0||dgt==ETA2S) {
781 mbx=0.75*1.45+0.25*1.300;
785 report(ERROR,"EvtGen") << "Not implemented daugt in get_EvtISGW2_ff_21S0.\n";
789 report(ERROR,"EvtGen") << "Not implemented parent in get_EvtISGW2_ff_21S0.\n";
796 mb = EvtPDL::getMeanMass( parent );
801 if (t>tm) t = 0.99*tm;
802 wt=1.0+(tm-t)/(2.0*mbb*mbx);
805 r2=3.0/(4.0*msb*msq)+3*msd*msd/(2*mbb*mbx*bbx2) +
806 (16.0/(mbb*mbx*(33.0-2.0*nfp)))*
807 log(EvtGetas(mqm)/EvtGetas(msq));
809 f3 = sqrt(mtx/mtb)*pow(sqrt(bx2*bb2)/bbx2,3.0/2.0) /
810 (pow((1.0+r2*(tm-t)/24.0),4.0));
812 f3fppfm = f3*pow(( mbb / mtb ),-0.5)*pow((mbx/mtx),0.5);
813 f3fpmfm = f3*pow(( mbb / mtb ),0.5)*pow((mbx/mtx),-0.5);
815 tau = msd*msd*bx2*(wt-1)/(bb2*bbx2);
816 udef = (( bb2-bx2)/(2.0*bbx2)) + ((bb2*tau)/(3.0*bbx2));
817 vdef = (bb2*(1.0+(msq/msb))/(6.0*bbx2))*(7.0 - ((bb2/bbx2)*(5+tau)));
819 fppfm = f3fppfm*sqrt(1.5)*((1.0-(msd/msq))*udef-(msd*vdef/msq));
820 fpmfm = f3fpmfm*sqrt(1.5)*(mtb/msq)*(udef+(msd*vdef/mtx));
822 *fppf = (fppfm + fpmfm) /2.0;
823 *fpmf = (fppfm - fpmfm) /2.0;
829 void EvtISGW2FF::EvtISGW2FF23S1 (EvtId parent,EvtId daugt,
830 double t, double mass, double *fpf, double *gpf,
831 double *appf, double *apmf ) {
833 //added by Lange Jan4,2000
834 static EvtId BP=EvtPDL::getId("B+");
835 static EvtId BM=EvtPDL::getId("B-");
836 static EvtId B0=EvtPDL::getId("B0");
837 static EvtId B0B=EvtPDL::getId("anti-B0");
839 static EvtId D0=EvtPDL::getId("D0");
840 static EvtId D0B=EvtPDL::getId("anti-D0");
841 static EvtId DP=EvtPDL::getId("D+");
842 static EvtId DM=EvtPDL::getId("D-");
844 static EvtId D23S1P=EvtPDL::getId("D*(2S)+");
845 static EvtId D23S1N=EvtPDL::getId("D*(2S)-");
846 static EvtId D23S10=EvtPDL::getId("D*(2S)0");
847 static EvtId D23S1B=EvtPDL::getId("anti-D*(2S)0");
849 static EvtId RHO2S0=EvtPDL::getId("rho(2S)0");
850 static EvtId RHO2SP=EvtPDL::getId("rho(2S)+");
851 static EvtId RHO2SM=EvtPDL::getId("rho(2S)-");
852 static EvtId OMEG2S=EvtPDL::getId("omega(2S)");
854 double mtb, mbb(0.0);
855 double msd(0.0), mx,mb,nfp(0.0);
856 double msq(0.0),bx2(0.0),mbx(0.0),mtx;
857 double f3appam,f3apmam,f3,appam,apmam,f3fp,f3gp;
858 double udef,tau,mum,bb2(0.0),bbx2,tm,wt,mqm,r2,msb(0.0);
864 if (prnt==B0||prnt==B0B||prnt==BP||prnt==BM) {
869 mbb=0.75*5.325+0.25*5.279;
871 if (dgt==RHO2S0||dgt==RHO2SP||dgt==RHO2SM||dgt==OMEG2S) {
876 mbx=0.75*1.45+0.25*1.300;
881 if (dgt==D23S1N||dgt==D23S1P||dgt==D23S1B||dgt==D23S10) {
885 mbx=0.75*2.64+0.25*2.58;
889 report(ERROR,"EvtGen") << "Not implemented daugt in get_isgw_ff_23P1.\n";
894 if (prnt==D0||prnt==D0B||prnt==DP||prnt==DM) {
900 if (dgt==RHO2S0||dgt==RHO2SP||dgt==RHO2SM||dgt==OMEG2S) {
904 mbx=0.75*1.45+0.25*1.300;
908 report(ERROR,"EvtGen") << "Not implemented daugt in get_isgw_ff_23P1.\n";
912 report(ERROR,"EvtGen") << "Not implemented parent in get_isgw_ff_23P1.\n";
918 mb = EvtPDL::getMeanMass( parent );
921 mum=1.0/(1.0/msq-1.0/msb);
925 if (t>tm) t = 0.99*tm;
926 wt=1.0+(tm-t)/(2.0*mbb*mbx);
929 r2=3.0/(4.0*msb*msq)+3*msd*msd/(2*mbb*mbx*bbx2) +
930 (16.0/(mbb*mbx*(33.0-2.0*nfp)))*
931 log(EvtGetas(mqm)/EvtGetas(msq));
933 f3 = sqrt(mtx/mtb)*pow(sqrt(bx2*bb2)/bbx2,3.0/2.0) /
934 (pow((1.0+r2*(tm-t)/24.0),4.0));
936 f3fp = f3*pow(( mbb / mtb ),0.5)*pow((mbx/mtx),0.5);
937 f3gp = f3*pow(( mbb / mtb ),-0.5)*pow((mbx/mtx),-0.5);
938 f3appam = f3*pow(( mbb / mtb ),-1.5)*pow((mbx/mtx),0.5);
939 f3apmam = f3*pow(( mbb / mtb ),-0.5)*pow((mbx/mtx),-0.5);
941 tau = msd*msd*bx2*(wt-1.0)/(bb2*bbx2);
942 udef = (( bb2-bx2)/(2.0*bbx2));
943 udef = udef + ((bb2*tau)/(3.0*bbx2));
945 *fpf = cfp*sqrt(1.5)*mtb*(1.0+wt)*udef*f3fp;
947 *gpf = sqrt(3.0/8.0)*f3gp*(((1.0/msq)-((msd*bb2)/(2.0*mum*mtx*bbx2)))*
948 udef + ( (msd*bb2*bx2)/(3.0*mum*mtx*bbx2*bbx2)));
950 appam = f3appam*sqrt(2.0/3.0)*(bb2/(msq*msb*bbx2))*((-7.0*msd*msd*bx2*
951 bx2*(1.0+(tau/7.0))/(8.0*mtb*bbx2*bbx2))+(5.0*msd*bx2*(1.0+
952 (tau/5.0))/(4.0*bbx2))+(3.0*msd*msd*bx2*bx2/(8.0*mtb*bb2*bbx2))-
953 (3.0*msd*bx2/(4.0*bb2)));
955 apmam = f3apmam*sqrt(3.0/2.0)*(mtb/(msb*mtx))*(1.0-(bb2*(1.0+(tau/7.0))/
956 bbx2)-(msd*bx2*(1.0-(5.0*bb2*(1.0+(tau/5.0))/(3.0*bbx2)))
957 /(2.0*mtb*bbx2))-(7.0*msd*msd*bb2*bx2/(12.0*msq*mtb*bbx2*bbx2))*
958 (1.0-(bx2/bbx2)+(bb2*tau/(7.0*bbx2))));
960 *appf = (appam + apmam) /2.0;
961 *apmf = (appam - apmam) /2.0;
965 void EvtISGW2FF::EvtISGW2FF1P1 (EvtId parent,EvtId daugt,
966 double t, double mass, double *rf, double *vf,
967 double *spf, double *smf ) {
968 //added by Lange Jan4,2000
969 static EvtId BP=EvtPDL::getId("B+");
970 static EvtId BM=EvtPDL::getId("B-");
971 static EvtId B0=EvtPDL::getId("B0");
972 static EvtId B0B=EvtPDL::getId("anti-B0");
974 static EvtId D0=EvtPDL::getId("D0");
975 static EvtId D0B=EvtPDL::getId("anti-D0");
976 static EvtId DP=EvtPDL::getId("D+");
977 static EvtId DM=EvtPDL::getId("D-");
979 static EvtId D1P1P=EvtPDL::getId("D_1+");
980 static EvtId D1P1N=EvtPDL::getId("D_1-");
981 static EvtId D1P10=EvtPDL::getId("D_10");
982 static EvtId D1P1B=EvtPDL::getId("anti-D_10");
984 static EvtId B1P=EvtPDL::getId("b_1+");
985 static EvtId B1M=EvtPDL::getId("b_1-");
986 static EvtId B10=EvtPDL::getId("b_10");
988 static EvtId H1=EvtPDL::getId("h_1");
989 static EvtId H1PR=EvtPDL::getId("h'_1");
991 static EvtId K1P=EvtPDL::getId("K_1+");
992 static EvtId K1M=EvtPDL::getId("K_1-");
993 static EvtId K10=EvtPDL::getId("K_10");
994 static EvtId K1B=EvtPDL::getId("anti-K_10");
996 static EvtId D1P1SP=EvtPDL::getId("D_s1+");
997 static EvtId D1P1SN=EvtPDL::getId("D_s1-");
999 static EvtId BSB=EvtPDL::getId("anti-B_s0");
1000 static EvtId BS0=EvtPDL::getId("B_s0");
1002 double mtb, mbb(0.0);
1003 double msd(0.0), mx,mb,nfp(0.0);
1004 double msq(0.0),bx2(0.0),mbx(0.0),mtx,f5;
1005 double f5sppsm,f5spmsm;
1006 double f5v,f5r,mup,mum,vv,rr,spmsm,sppsm;
1007 double mqm,msb(0.0),bb2(0.0),bbx2,tm,wt,r2;
1010 if (prnt==B0||prnt==B0B||prnt==BP||prnt==BM) {
1015 if (dgt==B10||dgt==B1P||dgt==B1M||dgt==H1||dgt==H1PR) {
1018 mbx=(3.0*1.123+0.98+5.0*1.32+3.0*1.26)/12.0;
1022 if (dgt==D1P1P||dgt==D1P10||dgt==D1P1B||dgt==D1P1N) {
1025 mbx=(5.0*2.46+3.0*2.42)/8.0;
1029 report(ERROR,"EvtGen") << "Not implemented daugt in get_isgw_ff_1P1.\n";
1034 if (prnt==DM||prnt==DP||prnt==D0B||prnt==D0) {
1039 if (dgt==B10||dgt==B1P||dgt==B1M||dgt==H1||dgt==H1PR) {
1042 mbx=(3.0*1.123+0.98+5.0*1.32+3.0*1.26)/12.0;
1046 if (dgt==K10||dgt==K1B||dgt==K1P||dgt==K1M) {
1049 mbx=(3.0*1.27+1.43+5.0*1.43+3.0*1.4)/12.0;
1053 report(ERROR,"EvtGen") << "Not implemented daugt in get_isgw_ff_1P1.\n";
1058 //BS -> cs constants added by djl on Jan. 21,1998
1059 if (prnt==BS0||prnt==BSB){
1066 if (dgt==D1P1SP||dgt==D1P1SN) {
1070 mbx=(5.0*2.61+3.0*2.54)/8.0;
1073 else if (dgt==K10||dgt==K1B||dgt==K1P||dgt==K1M) {
1076 mbx=(3.0*1.27+1.43+5.0*1.43+3.0*1.4)/12.0;
1080 report(ERROR,"EvtGen") << "Not implemented daugt:"
1081 <<daugt.getId()<<" in get_isgw_ff_1S0.\n";
1086 report(ERROR,"EvtGen") << "Not implemented parent in get_isgw_ff_1P1.\n";
1095 mb = EvtPDL::getMeanMass( parent );
1098 mup=1.0/(1.0/msq+1.0/msb);
1099 mum=1.0/(1.0/msq-1.0/msb);
1102 if (t>tm) t = 0.99*tm;
1103 wt=1.0+(tm-t)/(2.0*mbb*mbx);
1106 r2=3.0/(4.0*msb*msq)+3*msd*msd/(2*mbb*mbx*bbx2)+
1107 (16.0/(mbb*mbx*(33.0-2.0*nfp)))*
1108 log(EvtGetas(mqm,mqm)/EvtGetas(msq,msq));
1110 f5 = sqrt(mtx/mtb)*pow(sqrt(bx2*bb2)/bbx2,5.0/2.0) /
1111 (pow((1.0+r2*(tm-t)/18.0),3.0));
1113 f5v = f5*pow(( mbb / mtb ),-0.5)*pow((mbx/mtx),-0.5);
1114 f5r = f5*pow(( mbb / mtb ),0.5)*pow((mbx/mtx),0.5);
1115 f5sppsm = f5*pow(( mbb / mtb ),-1.5)*pow((mbx/mtx),0.5);
1116 f5spmsm = f5*pow(( mbb / mtb ),-0.5)*pow((mbx/mtx),-0.5);
1119 vv = f5v*(((mtb*sqrt(bb2))/(4.0*sqrt(2.0)*msb*msq*mtx)) +
1120 (((wt-1)*msd)/(6.0*sqrt(2.0*bb2)*mtx)));
1122 rr = f5r*mtb*sqrt(bb2/2)*((1.0/mup)+((msd*mtx*(wt-1)*(wt-1))/
1125 sppsm = msd*f5sppsm/(sqrt(2.0*bb2)*mtb)*(1.0-(msd/msq)+((msd*bb2)/
1128 spmsm = msd*f5spmsm/(sqrt(2.0*bb2)*msq)*(((4-wt)/3.0)- ( (msd*msq*bb2)/
1129 (2.0*mtx*mup*bbx2)));
1132 vv = -1.0*msd*f5v/(2.0*sqrt(3.0*bb2)*mtx)*
1133 ((wt+1)/2.0+bb2*mtb/(2.0*msd*msq*msb));
1135 rr = -2.0*mtb*sqrt(bb2/3.0)*f5r*(1.0/msq + mtx*msd*(wt-1)/(2.0*bb2)*
1136 ((wt+1)/(2.0*msq)-msd*bb2/(2.0*mum*mtx*bbx2)));
1138 sppsm = -1.0*sqrt(3.0)*msd*f5sppsm/(2.0*sqrt(bb2)*mtb)*(1 - msd/(3.0*msq) -
1139 msd*bb2/(3.0*bbx2)*(1.0/(2.0*mum)-1.0/mup));
1141 spmsm = -1.0*msd*f5spmsm/(2.0*sqrt(3.0*bb2)*mtx)*((2-wt)*mtx/msq +
1142 msd*bb2/bbx2*(1.0/(2.0*mum)-1.0/mup));
1146 //smooth out the mass(meson) dependence a little
1147 double parMass=EvtPDL::getMeanMass(prnt);
1148 double q2max = parMass*parMass + mass*mass - 2.0*parMass*mass;
1149 double massNom= EvtPDL::getMeanMass(dgt);
1150 double q2maxNom = parMass*parMass + massNom*massNom - 2.0*parMass*massNom;
1151 double q2maxin=sqrt(q2maxNom/q2max);
1152 if ( q2maxin > 1000. ) q2maxin=1000.;
1161 *spf = (sppsm + spmsm)/2.0;
1162 *smf = (sppsm - spmsm)/2.0;
1167 void EvtISGW2FF::EvtISGW2FF3P1 (EvtId parent,EvtId daugt,
1168 double t, double mass, double *lf, double *qf,
1169 double *cpf, double *cmf ) {
1171 //added by Lange Jan4,2000
1172 static EvtId BP=EvtPDL::getId("B+");
1173 static EvtId BM=EvtPDL::getId("B-");
1174 static EvtId B0=EvtPDL::getId("B0");
1175 static EvtId B0B=EvtPDL::getId("anti-B0");
1177 static EvtId D0=EvtPDL::getId("D0");
1178 static EvtId D0B=EvtPDL::getId("anti-D0");
1179 static EvtId DP=EvtPDL::getId("D+");
1180 static EvtId DM=EvtPDL::getId("D-");
1182 static EvtId D3P1P=EvtPDL::getId("D'_1+");
1183 static EvtId D3P1N=EvtPDL::getId("D'_1-");
1184 static EvtId D3P10=EvtPDL::getId("D'_10");
1185 static EvtId D3P1B=EvtPDL::getId("anti-D'_10");
1187 static EvtId A1P=EvtPDL::getId("a_1+");
1188 static EvtId A1M=EvtPDL::getId("a_1-");
1189 static EvtId A10=EvtPDL::getId("a_10");
1191 static EvtId F1=EvtPDL::getId("f_1");
1192 static EvtId F1PR=EvtPDL::getId("f'_1");
1194 static EvtId K1STP=EvtPDL::getId("K'_1+");
1195 static EvtId K1STM=EvtPDL::getId("K'_1-");
1196 static EvtId K1ST0=EvtPDL::getId("K'_10");
1197 static EvtId K1STB=EvtPDL::getId("anti-K'_10");
1199 static EvtId D3P1SP=EvtPDL::getId("D'_s1+");
1200 static EvtId D3P1SN=EvtPDL::getId("D'_s1-");
1202 static EvtId BSB=EvtPDL::getId("anti-B_s0");
1203 static EvtId BS0=EvtPDL::getId("B_s0");
1205 double mtb, mbb(0.0);
1206 double msd(0.0), mx,mb,nfp(0.0);
1207 double msq(0.0),bx2(0.0),mbx(0.0),mtx;
1208 double f5cppcm,f5cpmcm,f5,ql,ll,cppcm,cpmcm,f5q,f5l;
1209 double mqm,msb(0.0),bb2(0.0),mum,bbx2,tm,wt,r2;
1213 if (prnt==B0||prnt==B0B||prnt==BP||prnt==BM) {
1220 if (dgt==A10||dgt==A1P||dgt==A1M||dgt==F1||dgt==F1PR) {
1224 mbx=(3.0*1.23+0.98+5.0*1.32+3.0*1.26)/12.0;
1228 if (dgt==D3P1P||dgt==D3P1N||dgt==D3P10||dgt==D3P1B) {
1231 mbx=(3.0*2.49+2.40)/4.0;
1235 report(ERROR,"EvtGen") << "Not implemented daugt:"<<daugt.getId()<<" in get_isgw_ff_3P1.\n";
1240 if (prnt==D0||prnt==D0B||prnt==DP||prnt==DM) {
1247 if (dgt==F1||dgt==F1PR||dgt==A10||dgt==A1P||dgt==A1M) {
1251 mbx=(3.0*1.23+0.98+5.0*1.32+3.0*1.26)/12.0;
1255 if (dgt==K1STM||dgt==K1STB||dgt==K1STP||dgt==K1ST0) {
1258 mbx=(3.0*1.40+1.43+5.0*1.43+3.0*1.27)/12.0;
1262 report(ERROR,"EvtGen") << "Not implemented daugt:"<<daugt.getId()<<" in get_isgw_ff_3P1.\n";
1267 //BS -> cs constants added by djl on Jan. 21,1998
1268 if (prnt==BS0||prnt==BSB){
1275 if (dgt==D3P1SP||dgt==D3P1SN) {
1279 mbx=(3.0*2.54+2.46)/4.0;
1282 else if (dgt==K1STM||dgt==K1STB||dgt==K1STP||dgt==K1ST0) {
1285 mbx=(3.0*1.40+1.43+5.0*1.43+3.0*1.27)/12.0;
1289 report(ERROR,"EvtGen") << "Not implemented daugt:"<<daugt.getId()<<" in get_isgw_ff_1S0.\n";
1294 report(ERROR,"EvtGen") << "Not implemented parent in get_isgw_ff_3P1.\n";
1304 mb = EvtPDL::getMeanMass( parent );
1307 mum=1.0/(1.0/msq-1.0/msb);
1310 if (t>tm) t = 0.99*tm;
1311 wt=1.0+(tm-t)/(2.0*mbb*mbx);
1314 r2=3.0/(4.0*msb*msq)+3*msd*msd/(2*mbb*mbx*bbx2) +
1315 (16.0/(mbb*mbx*(33.0-2.0*nfp)))*
1316 log(EvtGetas(mqm)/EvtGetas(msq));
1318 f5 = sqrt(mtx/mtb)*pow(sqrt(bx2*bb2)/bbx2,5.0/2.0) /
1319 (pow((1.0+r2*(tm-t)/18.0),3.0));
1321 f5q = f5*pow(( mbb / mtb ),-0.5)*pow((mbx/mtx),-0.5);
1322 f5l = f5*pow(( mbb / mtb ),0.5)*pow((mbx/mtx),0.5);
1323 f5cppcm = f5*pow(( mbb / mtb ),-1.5)*pow((mbx/mtx),0.5);
1324 f5cpmcm = f5*pow(( mbb / mtb ),-0.5)*pow((mbx/mtx),-0.5);
1328 ql = -1.0*(msd*(5.0+wt)*f5q/(2.0*mtx*sqrt(bb2)*6.0));
1330 ll = -1.0*mtb*sqrt(bb2)*f5l*(1/mum+ ( (msd*mtx*(wt-1)/bb2)*
1331 ( (5.0+wt)/(6.0*msq)-(msd*bb2)/(2.0*mum*mtx*bbx2))));
1333 cppcm = (-1.0*(msd*mtx*f5cppcm/(2.0*msq*mtb*sqrt(bb2)))*
1334 (1-(msd*msq*bb2)/(2.0*mtx*mum*bbx2)));
1336 cpmcm = 1.0*(msd*mtx*f5cpmcm/(2.0*msq*mtb*sqrt(bb2)))*
1337 (((wt+2.0)/3.0)-(msd*msq*bb2)/(2.0*mtx*mum*bbx2))
1341 ql = f5q*sqrt(1.0/6.0)*msd/(sqrt(bb2)*mtx)*
1342 (1.0-bb2*mtb/(4.0*msd*msq*msb));
1343 ll = f5l*sqrt(2.0/3.0)*mtb*sqrt(bb2)*(1.0/(2.0*msq) - 3.0/(2.0*msb) +
1344 msd*mtx*(wt-1)/bb2*(1.0/msq-msd*bb2/(2.0*mum*mtx*bbx2)));
1345 cppcm = msd*msd*bx2*f5cppcm/(sqrt(6.0)*mtb*msq*sqrt(bb2)*bbx2);
1346 cpmcm = -sqrt(2.0/3.0)*msd*f5cpmcm/(sqrt(bb2)*mtx)*
1347 (1+msd*bx2/(2.0*msq*bbx2));
1350 //smooth out the mass(meson) dependence a little
1351 double parMass=EvtPDL::getMeanMass(prnt);
1352 double q2max = parMass*parMass + mass*mass - 2.0*parMass*mass;
1353 double massNom= EvtPDL::getMeanMass(dgt);
1354 double q2maxNom = parMass*parMass + massNom*massNom - 2.0*parMass*massNom;
1355 double q2maxin=sqrt(q2maxNom/q2max);
1356 if ( q2maxin > 1000. ) q2maxin=1000.;
1364 *cpf = (cppcm + cpmcm)/2.0;
1365 *cmf = (cppcm - cpmcm)/2.0;
1370 void EvtISGW2FF::EvtISGW2FF3P0 (EvtId parent,EvtId daugt,
1371 double t, double mass, double *upf, double *umf ) {
1373 //added by Lange Jan4,2000
1374 static EvtId BP=EvtPDL::getId("B+");
1375 static EvtId BM=EvtPDL::getId("B-");
1376 static EvtId B0=EvtPDL::getId("B0");
1377 static EvtId B0B=EvtPDL::getId("anti-B0");
1379 static EvtId D0=EvtPDL::getId("D0");
1380 static EvtId D0B=EvtPDL::getId("anti-D0");
1381 static EvtId DP=EvtPDL::getId("D+");
1382 static EvtId DM=EvtPDL::getId("D-");
1384 static EvtId D3P0P=EvtPDL::getId("D_0*+");
1385 static EvtId D3P0N=EvtPDL::getId("D_0*-");
1386 static EvtId D3P00=EvtPDL::getId("D_0*0");
1387 static EvtId D3P0B=EvtPDL::getId("anti-D_0*0");
1389 static EvtId D3P0SP=EvtPDL::getId("D_s0*+");
1390 static EvtId D3P0SN=EvtPDL::getId("D_s0*-");
1392 static EvtId A0P=EvtPDL::getId("a_0+");
1393 static EvtId A0M=EvtPDL::getId("a_0-");
1394 static EvtId A00=EvtPDL::getId("a_00");
1396 static EvtId F0=EvtPDL::getId("f_0");
1397 static EvtId F0PR=EvtPDL::getId("f'_0");
1399 static EvtId K0STP=EvtPDL::getId("K_0*+");
1400 static EvtId K0STM=EvtPDL::getId("K_0*-");
1401 static EvtId K0ST0=EvtPDL::getId("K_0*0");
1402 static EvtId K0STB=EvtPDL::getId("anti-K_0*0");
1404 static EvtId DSP=EvtPDL::getId("D_s+");
1405 static EvtId DSM=EvtPDL::getId("D_s-");
1407 static EvtId BSB=EvtPDL::getId("anti-B_s0");
1408 static EvtId BS0=EvtPDL::getId("B_s0");
1410 double mtb, mbb(0.0);
1411 double msd(0.0), mx,mb,nfp(0.0);
1412 double msq(0.0),bx2(0.0),mbx(0.0),mtx;
1413 double f5uppum,f5upmum,uppum,upmum,f5;
1414 double mqm,r2,bb2(0.0),bbx2,msb(0.0),tm;
1419 if (prnt==B0||prnt==B0B||prnt==BP||prnt==BM) {
1425 if (dgt==A00||dgt==A0P||dgt==A0M||dgt==F0||dgt==F0PR) {
1429 mbx=(3.0*1.23+0.98+5.0*1.32+3.0*1.26)/12.0;
1433 if (dgt==D3P0P||dgt==D3P0N||dgt==D3P00||dgt==D3P0B) {
1436 mbx=(3.0*2.49+2.40)/4.0;
1440 report(ERROR,"EvtGen") << "Not implemented daugt in get_EvtISGW2_ff_3P0.\n";
1445 if (prnt==D0||prnt==D0B||prnt==DP||prnt==DM) {
1451 if (dgt==F0||dgt==F0PR||dgt==A00||dgt==A0P||dgt==A0M) {
1454 mbx=(3.0*1.23+0.98+5.0*1.32+3.0*1.26)/12.0;
1458 if (dgt==K0STM||dgt==K0STB||dgt==K0STP||dgt==K0ST0) {
1461 mbx=(3.0*1.40+1.43+5.0*1.43+3.0*1.27)/12.0;
1465 report(ERROR,"EvtGen") << "Not implemented daugt in get_EvtISGW2_ff_3P0.\n";
1470 if (prnt==DSP||prnt==DSM){
1476 if (dgt==F0||dgt==F0PR||dgt==A00||dgt==A0P||dgt==A0M) {
1479 mbx=(3.0*1.40+1.43+5.0*1.43+3.0*1.27)/12.0;
1483 if (dgt==K0STM||dgt==K0STB||dgt==K0STP||dgt==K0ST0) {
1486 mbx=(3.0*1.23+0.98+5.0*1.32+3.0*1.26)/12.0;
1490 report(ERROR,"EvtGen") << "Not implemented daugt in get_EvtISGW2_ff_3P0.\n";
1495 //BS -> cs constants added by djl on Jan. 21,1998
1496 if (prnt==BS0||prnt==BSB){
1503 if (dgt==D3P0SP||dgt==D3P0SN) {
1507 mbx=(3.0*2.54+2.46)/4.0;
1510 else if (dgt==K0STM||dgt==K0STB||dgt==K0STP||dgt==K0ST0) {
1513 mbx=(3.0*1.40+1.43+5.0*1.43+3.0*1.27)/12.0;
1517 report(ERROR,"EvtGen") << "Not implemented daugt:"<<daugt.getId()<<" in get_isgw_ff_1S0.\n";
1521 report(ERROR,"EvtGen") << "Not implemented parent in get_EvtISGW2_ff_3P0.\n";
1531 mb = EvtPDL::getMeanMass( parent );
1536 if (t>tm) t = 0.99*tm;
1539 r2=3.0/(4.0*msb*msq)+3*msd*msd/(2*mbb*mbx*bbx2) +
1540 (16.0/(mbb*mbx*(33.0-2.0*nfp)))*
1541 log(EvtGetas(mqm)/EvtGetas(msq));
1543 f5 = sqrt(mtx/mtb)*pow(sqrt(bx2*bb2)/bbx2,5.0/2.0) /
1544 (pow((1.0+r2*(tm-t)/18.0),3.0));
1546 f5uppum = f5*pow(( mbb / mtb ),-0.5)*pow((mbx/mtx),0.5);
1547 f5upmum = f5*pow(( mbb / mtb ),0.5)*pow((mbx/mtx),-0.5);
1549 uppum = -1.0*f5uppum*sqrt(2.0/(3.0*bb2))*msd;
1550 upmum = 1.0*f5upmum*sqrt(2.0/(3.0*bb2))*msd*mtb/mtx;
1552 *upf = (uppum + upmum)/2.0;
1553 *umf = (uppum - upmum)/2.0;
1560 void EvtISGW2FF::EvtISGW2FF3P2 (EvtId parent,EvtId daugt,
1561 double t, double mass, double *hf, double *kf,
1562 double *bpf, double *bmf ) {
1564 //added by Lange Jan4,2000
1565 static EvtId BP=EvtPDL::getId("B+");
1566 static EvtId BM=EvtPDL::getId("B-");
1567 static EvtId B0=EvtPDL::getId("B0");
1568 static EvtId B0B=EvtPDL::getId("anti-B0");
1570 static EvtId D0=EvtPDL::getId("D0");
1571 static EvtId D0B=EvtPDL::getId("anti-D0");
1572 static EvtId DP=EvtPDL::getId("D+");
1573 static EvtId DM=EvtPDL::getId("D-");
1575 static EvtId D3P2P=EvtPDL::getId("D_2*+");
1576 static EvtId D3P2N=EvtPDL::getId("D_2*-");
1577 static EvtId D3P20=EvtPDL::getId("D_2*0");
1578 static EvtId D3P2B=EvtPDL::getId("anti-D_2*0");
1580 static EvtId A2P=EvtPDL::getId("a_2+");
1581 static EvtId A2M=EvtPDL::getId("a_2-");
1582 static EvtId A20=EvtPDL::getId("a_20");
1584 static EvtId F2=EvtPDL::getId("f_2");
1585 static EvtId F2PR=EvtPDL::getId("f'_2");
1587 static EvtId K2STP=EvtPDL::getId("K_2*+");
1588 static EvtId K2STM=EvtPDL::getId("K_2*-");
1589 static EvtId K2ST0=EvtPDL::getId("K_2*0");
1590 static EvtId K2STB=EvtPDL::getId("anti-K_2*0");
1592 static EvtId D3P2SP=EvtPDL::getId("D_s2*+");
1593 static EvtId D3P2SN=EvtPDL::getId("D_s2*-");
1595 static EvtId BSB=EvtPDL::getId("anti-B_s0");
1596 static EvtId BS0=EvtPDL::getId("B_s0");
1599 double mtb, mbb(0.0);
1600 double msd(0.0), mx,mb,nfp(0.0);
1601 double msq(0.0),bx2(0.0),mbx(0.0),mtx,f5;
1602 double f5h,f5k,f5bppbm,f5bpmbm,bppbm,bpmbm;
1603 double mqm,mum,mup,tm,wt,r2,bb2(0.0),bbx2;
1608 if (prnt==B0||prnt==B0B||prnt==BP||prnt==BM) {
1615 if (dgt==A20||dgt==A2P||dgt==A2M||dgt==F2||dgt==F2PR) {
1619 mbx=(3.0*1.23+0.98+5.0*1.32+3.0*1.26)/12.0;
1625 if (dgt==D3P2P||dgt==D3P2N||dgt==D3P20||dgt==D3P2B) {
1629 mbx=(5.0*2.46+3.0*2.42)/8.0;
1634 report(ERROR,"EvtGen") << "Not implemented daugt in get_isgw_ff_3P2.\n";
1639 if (prnt==D0||prnt==D0B||prnt==DP||prnt==DM) {
1645 if (dgt==F2||dgt==F2PR||dgt==A20||dgt==A2P||dgt==A2M) {
1648 mbx=(3.0*1.23+0.98+5.0*1.32+3.0*1.26)/12.0;
1652 if (dgt==K2STM||dgt==K2STB||dgt==K2STP||dgt==K2ST0) {
1655 mbx=(3.0*1.40+1.43+5.0*1.43+3.0*1.27)/12.0;
1659 report(ERROR,"EvtGen") << "Not implemented daugt in get_isgw_ff_3P2.\n";
1664 //BS -> cs constants added by djl on Jan. 21,1998
1665 if (prnt==BS0||prnt==BSB){
1672 if (dgt==D3P2SP||dgt==D3P2SN) {
1676 mbx=(5.0*2.61+3.0*2.54)/8.0;
1679 else if (dgt==K2STM||dgt==K2STB||dgt==K2STP||dgt==K2ST0) {
1682 mbx=(3.0*1.40+1.43+5.0*1.43+3.0*1.27)/12.0;
1686 report(ERROR,"EvtGen") << "Not implemented daugt:"<<daugt.getId()<<" in get_isgw_ff_1S0.\n";
1691 report(ERROR,"EvtGen") << "Not implemented parent in get_isgw_ff_3P2.\n";
1698 mb = EvtPDL::getMeanMass( parent );
1700 mup=1.0/(1.0/msq+1.0/msb);
1701 mum=1.0/(1.0/msq-1.0/msb);
1704 if (t>tm) t = 0.99*tm;
1705 wt=1.0+(tm-t)/(2.0*mbb*mbx);
1708 r2=3.0/(4.0*msb*msq)+3*msd*msd/(2*mbb*mbx*bbx2)+
1709 (16.0/(mbb*mbx*(33.0-2.0*nfp)))*
1710 log(EvtGetas(mqm)/EvtGetas(msq));
1712 f5 = sqrt(mtx/mtb)*pow(sqrt(bx2*bb2)/bbx2,5.0/2.0) /
1713 (pow((1.0+r2*(tm-t)/18.0),3.0));
1715 f5h = f5*pow(( mbb / mtb ),-1.5)*pow((mbx/mtx),-0.5);
1716 f5k = f5*pow(( mbb / mtb ),-0.5)*pow((mbx/mtx),0.5);
1717 f5bppbm = f5*pow(( mbb / mtb ),-2.5)*pow((mbx/mtx),0.5);
1718 f5bpmbm = f5*pow(( mbb / mtb ),-1.5)*pow((mbx/mtx),-0.5);
1720 *hf = f5h*(msd/(sqrt(8.0*bb2)*mtb))*((1.0/msq)-(msd*bb2/(2.0*mum*
1723 *kf = f5k*(msd/(sqrt(2.0*bb2)))*(1.0+wt);
1725 bppbm = ((msd*msd*f5bppbm*bx2)/(sqrt(32.0*bb2)*msq*msb*mtb*bbx2))*
1726 (1.0-(msd*bx2/(2.0*mtb*bbx2)));
1728 bpmbm = -1.0*(msd*f5bpmbm/(sqrt(2.0*bb2)*msb*mtx))*(1.0-
1729 ((msd*msb*bx2)/(2.0*mup*mtb*bbx2))+((msd*bx2*(1.0-
1730 ((msd*bx2)/(2.0*mtb*bbx2))))/(4.0*msq*bbx2)));
1732 *bpf = (bppbm + bpmbm)/2.0;
1733 *bmf = (bppbm - bpmbm)/2.0;
1738 double EvtISGW2FF::EvtGetGammaji ( double z )
1743 temp = 2+((2.0*z)/(1-z))*log(z);
1752 double EvtISGW2FF::EvtGetas ( double massq, double massx )
1754 double lqcd2 = 0.04;
1758 if ( massx > 0.6 ) {
1759 if ( massq < 1.85 ) {
1762 temp = 12.0*EvtConst::pi / ( 33.0 - 2.0*nflav) /
1763 log( massx*massx/lqcd2);
1769 double EvtISGW2FF::EvtGetas ( double mass )
1772 double lqcd2 = 0.04;
1777 if ( mass < 1.85 ) {
1780 temp = 12.0*EvtConst::pi / ( 33.0 - 2.0*nflav) /
1781 log( mass*mass/lqcd2);
1788 void EvtISGW2FF::getbaryonff(EvtId, EvtId, double, double, double*,
1789 double*, double*, double*){
1791 report(ERROR,"EvtGen") << "Not implemented :getbaryonff in EvtISGW2FF.\n";
1797 void EvtISGW2FF::getdiracff(EvtId, EvtId, double, double, double*, double*,
1798 double*, double*, double*, double*) {
1800 report(ERROR,"EvtGen") << "Not implemented :getdiracff in EvtISGW2FF.\n";
1805 void EvtISGW2FF::getraritaff(EvtId, EvtId, double, double, double*, double*,
1806 double*, double*, double*, double*, double*, double*) {
1808 report(ERROR,"EvtGen") << "Not implemented :getraritaff in EvtISGW2FF.\n";