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886b6f73 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
88cb7938 | 16 | /* $Id$ */ |
886b6f73 | 17 | |
18 | //====================================================================== | |
19 | // AliGenPHOSlib class contains parameterizations of the | |
20 | // pion, kaon, eta, omega, etaprime, phi and baryon (proton, | |
21 | // antiproton, neutron and anti-neutron) particles for the | |
22 | // study of the neutral background in PHOS detector. | |
23 | // These parameterizations are used by the | |
24 | // AliGenParam class: | |
25 | // AliGenParam(npar, param, AliGenPHOSlib::GetPt(param), | |
26 | // AliGenPHOSlib::GetY(param), | |
27 | // AliGenPHOSlib::GetIp(param) ) | |
28 | // param represents the particle to be simulated : | |
29 | // Pion, Kaon, Eta, Omega, Etaprime, Phi or Baryon | |
30 | // Pt distributions are calculated from the transverse mass scaling | |
9ae59e17 | 31 | // with Pions, using the PtScal function taken from AliGenMUONlib |
886b6f73 | 32 | // version aliroot 3.01 |
33 | // | |
9ae59e17 | 34 | // Gines MARTINEZ. Laurent APHECETCHE and Yves SCHUTZ |
35 | // GPS @ SUBATECH, Nantes , France (October 1999) | |
886b6f73 | 36 | // http://www-subatech.in2p3.fr/~photons/subatech |
37 | // martinez@subatech.in2p3.fr | |
35ead6c1 | 38 | // Additional particle species simulation options has been added: |
39 | // Charged Pion, Charged Kaons, KLong Proton, Anti-Proton, Neutron, | |
40 | // Anti-Neutron --> Changes made by Gustavo Conesa in November 2004 | |
8fc6910b | 41 | // Add flat Omega(782) distribution in Nov. 2010 by Renzhuo WAN |
886b6f73 | 42 | //====================================================================== |
43 | ||
65fb704d | 44 | #include "TMath.h" |
45 | #include "TRandom.h" | |
46 | ||
886b6f73 | 47 | #include "AliGenPHOSlib.h" |
886b6f73 | 48 | |
49 | ClassImp(AliGenPHOSlib) | |
50 | ||
51 | //====================================================================== | |
52 | // P I O N S | |
53 | // (From GetPt, GetY and GetIp as param = Pion) | |
54 | // Transverse momentum distribution" PtPion | |
55 | // Rapidity distribution YPion | |
56 | // Particle distribution IdPion 111, 211 and -211 (pi0, pi+ and pi-) | |
57 | // | |
75e0cc59 | 58 | Double_t AliGenPHOSlib::PtPion(const Double_t *px, const Double_t *) |
886b6f73 | 59 | { |
60 | // Pion transverse momentum distribtuion taken | |
9ae59e17 | 61 | // from AliGenMUONlib class, version 3.01 of aliroot |
886b6f73 | 62 | // PT-PARAMETERIZATION CDF, PRL 61(88) 1819 |
63 | // POWER LAW FOR PT > 500 MEV | |
64 | // MT SCALING BELOW (T=160 MEV) | |
65 | // | |
f87cfe57 | 66 | const Double_t kp0 = 1.3; |
67 | const Double_t kxn = 8.28; | |
68 | const Double_t kxlim=0.5; | |
69 | const Double_t kt=0.160; | |
70 | const Double_t kxmpi=0.139; | |
71 | const Double_t kb=1.; | |
72 | Double_t y, y1, kxmpi2, ynorm, a; | |
886b6f73 | 73 | Double_t x=*px; |
74 | // | |
f87cfe57 | 75 | y1=TMath::Power(kp0/(kp0+kxlim),kxn); |
76 | kxmpi2=kxmpi*kxmpi; | |
77 | ynorm=kb*(TMath::Exp(-sqrt(kxlim*kxlim+kxmpi2)/kt)); | |
886b6f73 | 78 | a=ynorm/y1; |
f87cfe57 | 79 | if (x > kxlim) |
80 | y=a*TMath::Power(kp0/(kp0+x),kxn); | |
886b6f73 | 81 | else |
f87cfe57 | 82 | y=kb*TMath::Exp(-sqrt(x*x+kxmpi2)/kt); |
886b6f73 | 83 | return y*x; |
84 | } | |
75e0cc59 | 85 | Double_t AliGenPHOSlib::YPion( const Double_t *py, const Double_t *) |
886b6f73 | 86 | { |
f87cfe57 | 87 | // |
88 | // pion y-distribution | |
89 | // | |
90 | ||
91 | const Double_t ka = 7000.; | |
92 | const Double_t kdy = 4.; | |
886b6f73 | 93 | |
94 | Double_t y=TMath::Abs(*py); | |
95 | // | |
f87cfe57 | 96 | Double_t ex = y*y/(2*kdy*kdy); |
97 | return ka*TMath::Exp(-ex); | |
886b6f73 | 98 | } |
f87cfe57 | 99 | |
078ff23f | 100 | Int_t AliGenPHOSlib::IpPion(TRandom */*ran*/) |
886b6f73 | 101 | { |
f87cfe57 | 102 | // particle composition pi+, pi0, pi- |
103 | // | |
104 | ||
886b6f73 | 105 | return 111 ; |
886b6f73 | 106 | } |
35ead6c1 | 107 | Int_t AliGenPHOSlib::IpChargedPion(TRandom *ran) |
108 | { | |
109 | // particle composition pi+, pi0, pi- | |
110 | // | |
111 | ||
112 | Float_t random = ran->Rndm(); | |
113 | ||
114 | if ( (2.*random) < 1. ) | |
115 | { | |
116 | return 211 ; | |
117 | } | |
118 | else | |
119 | { | |
120 | return -211 ; | |
121 | } | |
122 | } | |
74c62c73 | 123 | |
124 | //End Pions | |
125 | //====================================================================== | |
126 | // Pi 0 Flat Distribution | |
127 | // Transverse momentum distribution PtPi0Flat | |
128 | // Rapidity distribution YPi0Flat | |
129 | // Particle distribution IdPi0Flat 111 (pi0) | |
130 | // | |
131 | ||
6784ce25 | 132 | Double_t AliGenPHOSlib::PtPi0(const Double_t * px, const Double_t *) |
133 | { | |
134 | // Pion transverse momentum | |
135 | const Double_t kp0 =1.35; | |
136 | const Double_t kxn= 6.18; | |
137 | return TMath::Power(kp0 /(kp0 + px[0]), kxn); | |
138 | } | |
139 | ||
75e0cc59 | 140 | Double_t AliGenPHOSlib::PtPi0Flat(const Double_t */*px*/, const Double_t *) |
74c62c73 | 141 | { |
142 | // Pion transverse momentum flat distribution | |
143 | ||
144 | return 1; | |
145 | ||
146 | } | |
147 | ||
75e0cc59 | 148 | Double_t AliGenPHOSlib::YPi0Flat( const Double_t */*py*/, const Double_t *) |
74c62c73 | 149 | { |
150 | ||
151 | // pion y-distribution | |
152 | // | |
153 | return 1.; | |
154 | } | |
155 | ||
156 | Int_t AliGenPHOSlib::IpPi0Flat(TRandom *) | |
157 | { | |
158 | ||
159 | // particle composition pi0 | |
160 | // | |
161 | return 111 ; | |
162 | } | |
163 | // End Pi0Flat | |
886b6f73 | 164 | //============================================================= |
165 | // | |
f87cfe57 | 166 | Double_t AliGenPHOSlib::PtScal(Double_t pt, Int_t np) |
167 | { | |
886b6f73 | 168 | // Mt-scaling |
169 | // Fonction for the calculation of the Pt distribution for a | |
170 | // given particle np, from the pion Pt distribution using the | |
171 | // mt scaling. This function was taken from AliGenMUONlib | |
172 | // aliroot version 3.01, and was extended for baryons | |
173 | // np = 1=>Pions 2=>Kaons 3=>Etas 4=>Omegas 5=>ETA' 6=>PHI | |
174 | // 7=>BARYONS-BARYONBARS | |
f87cfe57 | 175 | |
886b6f73 | 176 | // SCALING EN MASSE PAR RAPPORT A PTPI |
0db2f441 | 177 | // MASS 0=>PI, 1=>K, 2=>ETA, 3=>OMEGA, 4=>ETA',5=>PHI |
f87cfe57 | 178 | const Double_t khm[10] = {0.1396, 0.494, 0.547, 0.782, 0.957, 1.02, |
0db2f441 | 179 | // MASS 6=>BARYON-BARYONBAR |
886b6f73 | 180 | 0.938, 0. , 0., 0.}; |
181 | // VALUE MESON/PI AT 5 GEV | |
f87cfe57 | 182 | const Double_t kfmax[10]={1., 1., 1., 1., 1., 1., 1., 1., 1., 1.}; |
f87cfe57 | 183 | Double_t f5=TMath::Power(((sqrt(100.018215)+2.)/(sqrt(100.+khm[np]*khm[np])+2.0)),12.3); |
184 | Double_t kfmax2=f5/kfmax[np]; | |
886b6f73 | 185 | // PIONS |
186 | Double_t ptpion=100.*PtPion(&pt, (Double_t*) 0); | |
187 | Double_t fmtscal=TMath::Power(((sqrt(pt*pt+0.018215)+2.)/ | |
f87cfe57 | 188 | (sqrt(pt*pt+khm[np]*khm[np])+2.0)),12.3)/ kfmax2; |
886b6f73 | 189 | return fmtscal*ptpion; |
74c62c73 | 190 | |
886b6f73 | 191 | } |
192 | // End Scaling | |
193 | //============================================================================ | |
194 | // K A O N S | |
75e0cc59 | 195 | Double_t AliGenPHOSlib::PtKaon( const Double_t *px, const Double_t *) |
886b6f73 | 196 | { |
f87cfe57 | 197 | // kaon |
198 | // pt-distribution | |
199 | //____________________________________________________________ | |
200 | ||
0db2f441 | 201 | return PtScal(*px,1); // 1==> Kaon in the PtScal function |
886b6f73 | 202 | } |
203 | ||
75e0cc59 | 204 | Double_t AliGenPHOSlib::YKaon( const Double_t *py, const Double_t *) |
886b6f73 | 205 | { |
f87cfe57 | 206 | // y-distribution |
207 | //____________________________________________________________ | |
208 | ||
209 | const Double_t ka = 1000.; | |
210 | const Double_t kdy = 4.; | |
886b6f73 | 211 | |
212 | ||
213 | Double_t y=TMath::Abs(*py); | |
214 | // | |
f87cfe57 | 215 | Double_t ex = y*y/(2*kdy*kdy); |
216 | return ka*TMath::Exp(-ex); | |
886b6f73 | 217 | } |
218 | ||
65fb704d | 219 | Int_t AliGenPHOSlib::IpKaon(TRandom *ran) |
886b6f73 | 220 | { |
f87cfe57 | 221 | // particle composition |
222 | // | |
223 | ||
65fb704d | 224 | Float_t random = ran->Rndm(); |
225 | Float_t random2 = ran->Rndm(); | |
226 | if (random2 < 0.5) | |
886b6f73 | 227 | { |
65fb704d | 228 | if (random < 0.5) { |
886b6f73 | 229 | return 321; // K+ |
230 | } else { | |
231 | return -321; // K- | |
232 | } | |
233 | } | |
234 | else | |
235 | { | |
65fb704d | 236 | if (random < 0.5) { |
9ae59e17 | 237 | return 130; // K^0 short |
886b6f73 | 238 | } else { |
9ae59e17 | 239 | return 310; // K^0 long |
886b6f73 | 240 | } |
241 | } | |
242 | } | |
35ead6c1 | 243 | |
244 | Int_t AliGenPHOSlib::IpChargedKaon(TRandom *ran) | |
245 | { | |
246 | // particle composition | |
247 | // | |
248 | ||
249 | Float_t random = ran->Rndm(); | |
250 | ||
251 | if (random < 0.5) { | |
252 | return 321; // K+ | |
253 | } else { | |
254 | return -321; // K- | |
255 | } | |
256 | ||
257 | ||
258 | } | |
259 | Int_t AliGenPHOSlib::IpKaon0L(TRandom *) | |
260 | { | |
261 | // particle composition | |
262 | // | |
263 | ||
264 | return 130; // K^0 long | |
265 | } | |
886b6f73 | 266 | // End Kaons |
267 | //============================================================================ | |
268 | //============================================================================ | |
269 | // E T A S | |
75e0cc59 | 270 | Double_t AliGenPHOSlib::PtEta( const Double_t *px, const Double_t *) |
886b6f73 | 271 | { |
f87cfe57 | 272 | // etas |
273 | // pt-distribution | |
274 | //____________________________________________________________ | |
275 | ||
0db2f441 | 276 | return PtScal(*px,2); // 2==> Eta in the PtScal function |
886b6f73 | 277 | } |
278 | ||
75e0cc59 | 279 | Double_t AliGenPHOSlib::YEta( const Double_t *py, const Double_t *) |
886b6f73 | 280 | { |
f87cfe57 | 281 | // y-distribution |
282 | //____________________________________________________________ | |
283 | ||
284 | const Double_t ka = 1000.; | |
285 | const Double_t kdy = 4.; | |
886b6f73 | 286 | |
287 | ||
288 | Double_t y=TMath::Abs(*py); | |
289 | // | |
f87cfe57 | 290 | Double_t ex = y*y/(2*kdy*kdy); |
291 | return ka*TMath::Exp(-ex); | |
886b6f73 | 292 | } |
293 | ||
65fb704d | 294 | Int_t AliGenPHOSlib::IpEta(TRandom *) |
886b6f73 | 295 | { |
f87cfe57 | 296 | // particle composition |
297 | // | |
298 | ||
886b6f73 | 299 | return 221; // eta |
300 | } | |
301 | // End Etas | |
74c62c73 | 302 | |
303 | //====================================================================== | |
304 | // Eta Flat Distribution | |
305 | // Transverse momentum distribution PtEtaFlat | |
306 | // Rapidity distribution YEtaFlat | |
307 | // Particle distribution IdEtaFlat 111 (pi0) | |
308 | // | |
309 | ||
75e0cc59 | 310 | Double_t AliGenPHOSlib::PtEtaFlat(const Double_t */*px*/, const Double_t *) |
74c62c73 | 311 | { |
312 | // Eta transverse momentum flat distribution | |
313 | ||
314 | return 1; | |
315 | ||
316 | } | |
317 | ||
75e0cc59 | 318 | Double_t AliGenPHOSlib::YEtaFlat( const Double_t */*py*/, const Double_t *) |
74c62c73 | 319 | { |
320 | // | |
321 | // pion y-distribution | |
322 | // | |
323 | return 1.; | |
324 | } | |
325 | ||
326 | Int_t AliGenPHOSlib::IpEtaFlat(TRandom *) | |
327 | { | |
328 | // | |
329 | // particle composition eta | |
330 | // | |
331 | return 221 ; | |
332 | } | |
35ead6c1 | 333 | // End EtaFlat |
886b6f73 | 334 | //============================================================================ |
335 | //============================================================================ | |
336 | // O M E G A S | |
75e0cc59 | 337 | Double_t AliGenPHOSlib::PtOmega( const Double_t *px, const Double_t *) |
f87cfe57 | 338 | { |
886b6f73 | 339 | // omegas |
340 | // pt-distribution | |
341 | //____________________________________________________________ | |
f87cfe57 | 342 | |
0db2f441 | 343 | return PtScal(*px,3); // 3==> Omega in the PtScal function |
886b6f73 | 344 | } |
345 | ||
75e0cc59 | 346 | Double_t AliGenPHOSlib::YOmega( const Double_t *py, const Double_t *) |
886b6f73 | 347 | { |
f87cfe57 | 348 | // y-distribution |
349 | //____________________________________________________________ | |
350 | ||
351 | const Double_t ka = 1000.; | |
352 | const Double_t kdy = 4.; | |
886b6f73 | 353 | |
354 | ||
355 | Double_t y=TMath::Abs(*py); | |
356 | // | |
f87cfe57 | 357 | Double_t ex = y*y/(2*kdy*kdy); |
358 | return ka*TMath::Exp(-ex); | |
886b6f73 | 359 | } |
360 | ||
65fb704d | 361 | Int_t AliGenPHOSlib::IpOmega(TRandom *) |
886b6f73 | 362 | { |
f87cfe57 | 363 | // particle composition |
364 | // | |
365 | ||
886b6f73 | 366 | return 223; // Omega |
367 | } | |
368 | // End Omega | |
369 | //============================================================================ | |
8fc6910b | 370 | //====================================================================== |
371 | // Omega(782) Flat Distribution | |
372 | // Transverse momentum distribution PtOmegaFlat | |
373 | // Rapidity distribution YOmegaFlat | |
374 | // Particle distribution IdOmegaFlat 223(0mega) | |
375 | // | |
376 | ||
377 | Double_t AliGenPHOSlib::PtOmegaFlat(const Double_t */*px*/, const Double_t *) | |
378 | { | |
379 | // omega transverse momentum flat distribution | |
380 | ||
381 | return 1; | |
382 | ||
383 | } | |
384 | ||
385 | Double_t AliGenPHOSlib::YOmegaFlat( const Double_t */*py*/, const Double_t *) | |
386 | { | |
387 | ||
388 | // omega y-distribution | |
389 | // | |
390 | return 1.; | |
391 | } | |
392 | ||
393 | Int_t AliGenPHOSlib::IpOmegaFlat(TRandom *) | |
394 | { | |
395 | ||
396 | // particle composition omega | |
397 | // | |
398 | return 223 ; | |
399 | } | |
400 | // End OmegaFlat | |
401 | ||
402 | ||
886b6f73 | 403 | //============================================================================ |
404 | // E T A P R I M E | |
75e0cc59 | 405 | Double_t AliGenPHOSlib::PtEtaprime( const Double_t *px, const Double_t *) |
f87cfe57 | 406 | { |
886b6f73 | 407 | // etaprime |
408 | // pt-distribution | |
409 | //____________________________________________________________ | |
f87cfe57 | 410 | |
0db2f441 | 411 | return PtScal(*px,4); // 4==> Etaprime in the PtScal function |
886b6f73 | 412 | } |
413 | ||
75e0cc59 | 414 | Double_t AliGenPHOSlib::YEtaprime( const Double_t *py, const Double_t *) |
886b6f73 | 415 | { |
f87cfe57 | 416 | // y-distribution |
417 | //____________________________________________________________ | |
418 | ||
419 | const Double_t ka = 1000.; | |
420 | const Double_t kdy = 4.; | |
886b6f73 | 421 | |
422 | ||
423 | Double_t y=TMath::Abs(*py); | |
424 | // | |
f87cfe57 | 425 | Double_t ex = y*y/(2*kdy*kdy); |
426 | return ka*TMath::Exp(-ex); | |
886b6f73 | 427 | } |
428 | ||
65fb704d | 429 | Int_t AliGenPHOSlib::IpEtaprime(TRandom *) |
886b6f73 | 430 | { |
f87cfe57 | 431 | // particle composition |
432 | // | |
433 | ||
886b6f73 | 434 | return 331; // Etaprime |
435 | } | |
436 | // End EtaPrime | |
437 | //=================================================================== | |
438 | //============================================================================ | |
439 | // P H I S | |
75e0cc59 | 440 | Double_t AliGenPHOSlib::PtPhi( const Double_t *px, const Double_t *) |
f87cfe57 | 441 | { |
886b6f73 | 442 | // phi |
443 | // pt-distribution | |
444 | //____________________________________________________________ | |
f87cfe57 | 445 | |
0db2f441 | 446 | return PtScal(*px,5); // 5==> Phi in the PtScal function |
886b6f73 | 447 | } |
448 | ||
75e0cc59 | 449 | Double_t AliGenPHOSlib::YPhi( const Double_t *py, const Double_t *) |
886b6f73 | 450 | { |
f87cfe57 | 451 | // y-distribution |
452 | //____________________________________________________________ | |
453 | ||
454 | const Double_t ka = 1000.; | |
455 | const Double_t kdy = 4.; | |
886b6f73 | 456 | |
457 | ||
458 | Double_t y=TMath::Abs(*py); | |
459 | // | |
f87cfe57 | 460 | Double_t ex = y*y/(2*kdy*kdy); |
461 | return ka*TMath::Exp(-ex); | |
886b6f73 | 462 | } |
463 | ||
65fb704d | 464 | Int_t AliGenPHOSlib::IpPhi(TRandom *) |
f87cfe57 | 465 | { |
886b6f73 | 466 | // particle composition |
467 | // | |
f87cfe57 | 468 | |
886b6f73 | 469 | return 333; // Phi |
470 | } | |
471 | // End Phis | |
472 | //=================================================================== | |
473 | //============================================================================ | |
474 | // B A R Y O N S == protons, protonsbar, neutrons, and neutronsbars | |
75e0cc59 | 475 | Double_t AliGenPHOSlib::PtBaryon( const Double_t *px, const Double_t *) |
f87cfe57 | 476 | { |
886b6f73 | 477 | // baryons |
478 | // pt-distribution | |
479 | //____________________________________________________________ | |
f87cfe57 | 480 | |
0db2f441 | 481 | return PtScal(*px,6); // 6==> Baryon in the PtScal function |
886b6f73 | 482 | } |
483 | ||
75e0cc59 | 484 | Double_t AliGenPHOSlib::YBaryon( const Double_t *py, const Double_t *) |
886b6f73 | 485 | { |
f87cfe57 | 486 | // y-distribution |
487 | //____________________________________________________________ | |
488 | ||
489 | const Double_t ka = 1000.; | |
490 | const Double_t kdy = 4.; | |
886b6f73 | 491 | |
492 | ||
493 | Double_t y=TMath::Abs(*py); | |
494 | // | |
f87cfe57 | 495 | Double_t ex = y*y/(2*kdy*kdy); |
496 | return ka*TMath::Exp(-ex); | |
886b6f73 | 497 | } |
498 | ||
65fb704d | 499 | Int_t AliGenPHOSlib::IpBaryon(TRandom *ran) |
886b6f73 | 500 | { |
f87cfe57 | 501 | // particle composition |
502 | // | |
503 | ||
65fb704d | 504 | Float_t random = ran->Rndm(); |
505 | Float_t random2 = ran->Rndm(); | |
506 | if (random2 < 0.5) | |
886b6f73 | 507 | { |
65fb704d | 508 | if (random < 0.5) { |
886b6f73 | 509 | return 2212; // p |
510 | } else { | |
511 | return -2212; // pbar | |
512 | } | |
513 | } | |
514 | else | |
515 | { | |
65fb704d | 516 | if (random < 0.5) { |
886b6f73 | 517 | return 2112; // n |
518 | } else { | |
519 | return -2112; // n bar | |
520 | } | |
521 | } | |
35ead6c1 | 522 | } |
523 | ||
524 | Int_t AliGenPHOSlib::IpProton(TRandom *) | |
525 | { | |
526 | // particle composition | |
527 | // | |
528 | return 2212; // p | |
529 | ||
530 | } | |
531 | Int_t AliGenPHOSlib::IpAProton(TRandom *) | |
532 | { | |
533 | // particle composition | |
534 | // | |
535 | return -2212; // p bar | |
536 | ||
537 | } | |
538 | ||
539 | Int_t AliGenPHOSlib::IpNeutron(TRandom *) | |
540 | { | |
541 | // particle composition | |
542 | // | |
543 | return 2112; // n | |
544 | ||
545 | } | |
546 | Int_t AliGenPHOSlib::IpANeutron(TRandom *) | |
547 | { | |
548 | // particle composition | |
549 | // | |
550 | return -2112; // n | |
551 | ||
886b6f73 | 552 | } |
553 | // End Baryons | |
554 | //=================================================================== | |
555 | ||
75e0cc59 | 556 | typedef Double_t (*GenFunc) (const Double_t*, const Double_t*); |
198bb1c7 | 557 | GenFunc AliGenPHOSlib::GetPt(Int_t param, const char* /*tname*/) const |
886b6f73 | 558 | { |
f87cfe57 | 559 | // Return pinter to pT parameterisation |
886b6f73 | 560 | GenFunc func; |
561 | ||
562 | switch (param) | |
35ead6c1 | 563 | { |
564 | case kPion: | |
886b6f73 | 565 | func=PtPion; |
566 | break; | |
6784ce25 | 567 | case kPi0: |
568 | func=PtPi0; | |
569 | break; | |
35ead6c1 | 570 | case kPi0Flat: |
74c62c73 | 571 | func=PtPi0Flat; |
572 | break; | |
35ead6c1 | 573 | case kKaon: |
886b6f73 | 574 | func=PtKaon; |
575 | break; | |
35ead6c1 | 576 | case kEta: |
886b6f73 | 577 | func=PtEta; |
578 | break; | |
35ead6c1 | 579 | case kEtaFlat: |
74c62c73 | 580 | func=PtEtaFlat; |
581 | break; | |
35ead6c1 | 582 | case kOmega: |
886b6f73 | 583 | func=PtOmega; |
584 | break; | |
8fc6910b | 585 | case kOmegaFlat: |
586 | func=PtOmegaFlat; | |
587 | break; | |
35ead6c1 | 588 | case kEtaPrime: |
886b6f73 | 589 | func=PtEtaprime; |
590 | break; | |
35ead6c1 | 591 | case kBaryon: |
886b6f73 | 592 | func=PtBaryon; |
593 | break; | |
35ead6c1 | 594 | default: |
886b6f73 | 595 | func=0; |
596 | printf("<AliGenPHOSlib::GetPt> unknown parametrisationn"); | |
35ead6c1 | 597 | } |
886b6f73 | 598 | return func; |
599 | } | |
600 | ||
198bb1c7 | 601 | GenFunc AliGenPHOSlib::GetY(Int_t param, const char* /*tname*/) const |
886b6f73 | 602 | { |
35ead6c1 | 603 | // Return pointer to Y parameterisation |
604 | GenFunc func; | |
605 | switch (param) | |
886b6f73 | 606 | { |
34f60c01 | 607 | case kPion: |
35ead6c1 | 608 | func=YPion; |
609 | break; | |
6784ce25 | 610 | case kPi0: |
74c62c73 | 611 | case kPi0Flat: |
35ead6c1 | 612 | func=YPi0Flat; |
613 | break; | |
34f60c01 | 614 | case kKaon: |
35ead6c1 | 615 | func=YKaon; |
616 | break; | |
34f60c01 | 617 | case kEta: |
35ead6c1 | 618 | func=YEta; |
619 | break; | |
620 | case kEtaFlat: | |
621 | func=YEtaFlat; | |
622 | break; | |
34f60c01 | 623 | case kOmega: |
35ead6c1 | 624 | func=YOmega; |
625 | break; | |
8fc6910b | 626 | case kOmegaFlat: |
627 | func=YOmegaFlat; | |
628 | break; | |
34f60c01 | 629 | case kEtaPrime: |
35ead6c1 | 630 | func=YEtaprime; |
631 | break; | |
34f60c01 | 632 | case kPhi: |
35ead6c1 | 633 | func=YPhi; |
634 | break; | |
34f60c01 | 635 | case kBaryon: |
35ead6c1 | 636 | func=YBaryon; |
637 | break; | |
886b6f73 | 638 | default: |
35ead6c1 | 639 | func=0; |
640 | printf("<AliGenPHOSlib::GetY> unknown parametrisationn"); | |
886b6f73 | 641 | } |
35ead6c1 | 642 | return func; |
886b6f73 | 643 | } |
65fb704d | 644 | typedef Int_t (*GenFuncIp) (TRandom *); |
198bb1c7 | 645 | GenFuncIp AliGenPHOSlib::GetIp(Int_t param, const char* /*tname*/) const |
886b6f73 | 646 | { |
35ead6c1 | 647 | // Return pointer to particle composition |
648 | GenFuncIp func; | |
649 | switch (param) | |
886b6f73 | 650 | { |
74c62c73 | 651 | case kPion: |
35ead6c1 | 652 | func=IpPion; |
653 | break; | |
654 | case kChargedPion: | |
655 | func=IpChargedPion; | |
656 | break; | |
6784ce25 | 657 | case kPi0: |
74c62c73 | 658 | case kPi0Flat: |
35ead6c1 | 659 | func=IpPi0Flat; |
660 | break; | |
34f60c01 | 661 | case kKaon: |
35ead6c1 | 662 | func=IpKaon; |
663 | break; | |
664 | case kChargedKaon: | |
665 | func=IpChargedKaon; | |
666 | break; | |
667 | case kKaon0L: | |
668 | func=IpKaon0L; | |
669 | break; | |
34f60c01 | 670 | case kEta: |
35ead6c1 | 671 | func=IpEta; |
672 | break; | |
74c62c73 | 673 | case kEtaFlat: |
35ead6c1 | 674 | func=IpEtaFlat; |
675 | break; | |
676 | ||
34f60c01 | 677 | case kOmega: |
35ead6c1 | 678 | func=IpOmega; |
679 | break; | |
8fc6910b | 680 | case kOmegaFlat: |
681 | func=IpOmegaFlat; | |
682 | break; | |
34f60c01 | 683 | case kEtaPrime: |
35ead6c1 | 684 | func=IpEtaprime; |
685 | break; | |
34f60c01 | 686 | case kPhi: |
35ead6c1 | 687 | func=IpPhi; |
688 | break; | |
34f60c01 | 689 | case kBaryon: |
35ead6c1 | 690 | func=IpBaryon; |
691 | break; | |
692 | case kProton: | |
693 | func=IpProton; | |
694 | break; | |
695 | case kAProton: | |
696 | func=IpAProton; | |
697 | break; | |
698 | case kNeutron: | |
699 | func=IpNeutron; | |
700 | break; | |
701 | case kANeutron: | |
702 | func=IpANeutron; | |
703 | break; | |
704 | ||
886b6f73 | 705 | default: |
35ead6c1 | 706 | func=0; |
707 | printf("<AliGenPHOSlib::GetIp> unknown parametrisationn"); | |
886b6f73 | 708 | } |
35ead6c1 | 709 | return func; |
886b6f73 | 710 | } |
711 |