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4fdf4eb3 | 1 | #include "AliHBTLLWeights.h" |
88cb7938 | 2 | /************************************************************************** |
3 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * * | |
5 | * Author: The ALICE Off-line Project. * | |
6 | * Contributors are mentioned in the code where appropriate. * | |
7 | * * | |
8 | * Permission to use, copy, modify and distribute this software and its * | |
9 | * documentation strictly for non-commercial purposes is hereby granted * | |
10 | * without fee, provided that the above copyright notice appears in all * | |
11 | * copies and that both the copyright notice and this permission notice * | |
12 | * appear in the supporting documentation. The authors make no claims * | |
13 | * about the suitability of this software for any purpose. It is * | |
14 | * provided "as is" without express or implied warranty. * | |
15 | **************************************************************************/ | |
16 | ||
17 | //_________________________________________________________________________ | |
18 | /////////////////////////////////////////////////////////////////////////// | |
19 | // | |
20 | // class AliHBTLLWeights | |
21 | // | |
22 | // This class introduces the weight's calculation | |
23 | // according to the Lednicky's algorithm. | |
24 | // | |
25 | // | |
26 | // fsiw.f, fsiini.f | |
27 | // | |
28 | // Description from fortran code by author R. Lednicky | |
29 | // | |
30 | // Calculates final state interaction (FSI) weights | |
31 | // WEIF = weight due to particle - (effective) nucleus FSI (p-N) | |
32 | // WEI = weight due to p-p-N FSI | |
33 | // WEIN = weight due to p-p FSI; note that WEIN=WEI if I3C=0; | |
34 | // note that if I3C=1 the calculation of | |
35 | // WEIN can be skipped by putting J=0 | |
36 | //....................................................................... | |
37 | // Correlation Functions: | |
38 | // CF(p-p-N) = sum(WEI)/sum(WEIF) | |
39 | // CF(p-p) = sum(WEIN)/sum(1); here the nucleus is completely | |
40 | // inactive | |
41 | // CF(p-p-"N") = sum(WEIN*WEIF')/sum(WEIF'), where WEIN and WEIF' | |
42 | // are not correlated (calculated at different emission | |
43 | // points, e.g., for different events); | |
44 | // thus here the nucleus affects one-particle | |
45 | // spectra but not the correlation | |
46 | //....................................................................... | |
47 | // User must supply data file <fn> on unit NUNIT (e.g. =11) specifying | |
48 | // LL : particle pair | |
49 | // NS : approximation used to calculate Bethe-Salpeter amplitude | |
50 | // ITEST: test switch | |
51 | // If ITEST=1 then also following parameters are required | |
52 | // ICH : 1(0) Coulomb interaction between the two particles ON (OFF) | |
53 | // IQS : 1(0) quantum statistics for the two particles ON (OFF) | |
54 | // ISI : 1(0) strong interaction between the two particles ON (OFF) | |
55 | // I3C : 1(0) Coulomb interaction with residual nucleus ON (OFF) | |
56 | // This data file can contain other information useful for the user. | |
57 | // It is read by subroutines READINT4 and READREA8(4) (or READ_FILE). | |
58 | // ------------------------------------------------------------------- | |
59 | //- LL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | |
60 | //- part. 1: n p n alfa pi+ pi0 pi+ n p pi+ pi+ pi+ pi- K+ K+ K+ K- | |
61 | //- part. 2: n p p alfa pi- pi0 pi+ d d K- K+ p p K- K+ p p | |
62 | // NS=1 y/n: + + + + + - - - - - - - - - - - - | |
63 | // ------------------------------------------------------------------- | |
64 | //- LL 18 19 20 21 22 23 24 25 26 27 28 | |
65 | //- part. 1: d d t t K0 K0 d p p p n | |
66 | //- part. 2: d alfa t alfa K0 K0b t t alfa lambda lambda | |
67 | // NS=1 y/n: - - - - - - - - - + + | |
68 | // ------------------------------------------------------------------- | |
69 | // NS=1 Square well potential, | |
70 | // NS=3 not used | |
71 | // NS=4 scattered wave approximated by the spherical wave, | |
72 | // NS=2 same as NS=4 but the approx. of equal emission times in PRF | |
73 | // not required (t=0 approx. used in all other cases). | |
74 | // Note: if NS=2,4, the B-S amplitude diverges at zero distance r* in | |
75 | // the two-particle c.m.s.; user can specify a cutoff AA in | |
76 | // SUBROUTINE FSIINI, for example: | |
77 | // IF(NS.EQ.2.OR.NS.EQ.4)AA=5.D0 !! in 1/GeV --> AA=1. fm | |
78 | // ------------------------------------------------------------------ | |
79 | // ITEST=1 any values of parameters ICH, IQS, ISI, I3C are allowed | |
80 | // and should be given in data file <fn> | |
81 | // ITEST=0 physical values of these parameters are put automatically | |
82 | // in FSIINI (their values are not required in data file) | |
83 | //===================================================================== | |
84 | // At the beginning of calculation user should call FSIINI, | |
85 | // which reads LL, NS, ITEST (and eventually ICH, IQS, ISI, I3C) | |
c81f9591 | 86 | // and ializes various parameters. |
88cb7938 | 87 | // In particular the constants in |
88 | // COMMON/FSI_CONS/PI,PI2,SPI,DR,W | |
89 | // may be useful for the user: | |
90 | // W=1/.1973D0 ! from fm to 1/GeV | |
91 | // PI=4*DATAN(1.D0) | |
92 | // PI2=2*PI | |
93 | // SPI=DSQRT(PI) | |
94 | // DR=180.D0/PI ! from radian to degree | |
95 | // _______________________________________________________ | |
96 | // !! |Important note: all real quantities are assumed REAL*8 | !! | |
97 | // ------------------------------------------------------- | |
98 | // For each event user should fill in the following information | |
99 | // in COMMONs (all COMMONs in FSI calculation start with FSI_): | |
100 | // ................................................................... | |
101 | // COMMON/FSI_POC/AMN,AM1,AM2,CN,C1,C2,AC1,AC2 | |
102 | // Only | |
103 | // AMN = mass of the effective nucleus [GeV/c**2] | |
104 | // CN = charge of the effective nucleus [elem. charge units] | |
105 | // are required | |
106 | // ................................................................... | |
107 | // COMMON/FSI_MOM/P1X,P1Y,P1Z,E1,P1, !part. momenta in the rest frame | |
108 | // 1 P2X,P2Y,P2Z,E2,P2 !of effective nucleus (NRF) | |
109 | // Only the components | |
110 | // PiX,PiY,PiZ [GeV/c] | |
111 | // in NRF are required. | |
112 | // To make the corresponding Lorentz transformation user can use the | |
113 | // subroutines LTRAN and LTRANB | |
114 | // ................................................................... | |
115 | // COMMON/FSI_COOR/X1,Y1,Z1,T1,R1, ! 4-coord. of emission | |
116 | // 1 X2,Y2,Z2,T2,R2 ! points in NRF | |
117 | // The componets | |
118 | // Xi,Yi,Zi [fm] | |
119 | // and emission times | |
120 | // Ti [fm/c] | |
121 | // should be given in NRF with the origin assumed at the center | |
122 | // of the effective nucleus. If the effect of residual nucleus is | |
123 | // not calculated within FSIW, the NRF can be any fixed frame. | |
124 | // -------------------------------------------------------------------- | |
125 | // Before calling FSIW the user must call | |
126 | // CALL LTRAN12 | |
127 | // Besides Lorentz transformation to pair rest frame: | |
128 | // (p1-p2)/2 --> k* it also transforms 4-coordinates of | |
129 | // emission points from fm to 1/GeV and calculates Ei,Pi and Ri. | |
130 | // Note that |k*|=AK in COMMON/FSI_PRF/ | |
131 | // -------------------------------------------------------------------- | |
132 | // After making some additional filtering using k* (say k* < k*max) | |
133 | // or direction of vector k*, | |
134 | // user can finally call FSIW to calculate the FSI weights | |
135 | // to be used to construct the correlation function | |
136 | //====================================================================== | |
137 | ||
4fdf4eb3 | 138 | |
7f92929e | 139 | /*******************************************************************/ |
140 | /****** ROUTINES USED FOR COMMUNUCATION ********/ | |
141 | /******************** WITH FORTRAN ********************/ | |
142 | /*******************************************************************/ | |
143 | #ifndef WIN32 | |
144 | # define led_bldata led_bldata_ | |
145 | # define fsiini fsiini_ | |
146 | # define ltran12 ltran12_ | |
147 | # define fsiw fsiw_ | |
88cb7938 | 148 | # define setpdist setpdist_ |
7f92929e | 149 | # define type_of_call |
150 | #else | |
151 | # define led_bldata LED_BLDATA | |
152 | # define fsiini FSIINI | |
153 | # define ltran12 LTRAN12 | |
154 | # define fsiw FSIW | |
88cb7938 | 155 | # define setpdist SETPDIST |
7f92929e | 156 | # define type_of_call _stdcall |
157 | #endif | |
158 | /****************************************************************/ | |
159 | extern "C" void type_of_call led_bldata(); | |
160 | extern "C" void type_of_call fsiini(); | |
161 | extern "C" void type_of_call ltran12(); | |
162 | extern "C" void type_of_call fsiw(); | |
88cb7938 | 163 | extern "C" void type_of_call setpdist(Double_t& r); |
7f92929e | 164 | /**************************************************************/ |
165 | ||
88cb7938 | 166 | #include "AliHBTPair.h" |
167 | #include "AliHBTParticle.h" | |
168 | #include "WLedCOMMONS.h" | |
88cb7938 | 169 | #include <TRandom.h> |
170 | #include <TMath.h> | |
171 | #include <TPDGCode.h> | |
172 | ||
173 | ||
7f92929e | 174 | ClassImp(AliHBTLLWeights) |
7f92929e | 175 | |
88cb7938 | 176 | AliHBTLLWeights* AliHBTLLWeights::fgLLWeights = 0x0; |
177 | const Double_t AliHBTLLWeights::fgkWcons = 1./0.1973; | |
7f92929e | 178 | |
88cb7938 | 179 | AliHBTLLWeights::AliHBTLLWeights(): |
180 | fTest(kTRUE), | |
181 | fColoumbSwitch(kTRUE), | |
182 | fQuantStatSwitch(kTRUE), | |
183 | fStrongInterSwitch(kTRUE), | |
111e505b | 184 | fColWithResidNuclSwitch(kFALSE), |
88cb7938 | 185 | fNuclMass(0.0), |
186 | fNuclCharge(0.0), | |
187 | fRandomPosition(kFALSE), | |
188 | fRadius(0.0), | |
526c2bd5 | 189 | fOneMinusLambda(0.0), |
88cb7938 | 190 | fPID1(0), |
191 | fPID2(0), | |
192 | fSigma(0.0) | |
7f92929e | 193 | { |
88cb7938 | 194 | // Default Constructor |
ae4a4473 | 195 | if (fgLLWeights) |
196 | Fatal("AliHBTLLWeights","LLWeights already instatiated. Use AliHBTLLWeights::Instance()"); | |
7f92929e | 197 | } |
88cb7938 | 198 | /**************************************************************/ |
7f92929e | 199 | |
111e505b | 200 | AliHBTLLWeights::AliHBTLLWeights(const AliHBTLLWeights &/*source*/): |
dd82cadc | 201 | AliHBTWeights(), |
111e505b | 202 | fTest(kTRUE), |
203 | fColoumbSwitch(kTRUE), | |
204 | fQuantStatSwitch(kTRUE), | |
205 | fStrongInterSwitch(kTRUE), | |
206 | fColWithResidNuclSwitch(kFALSE), | |
207 | fNuclMass(0.0), | |
208 | fNuclCharge(0.0), | |
209 | fRandomPosition(kFALSE), | |
210 | fRadius(0.0), | |
526c2bd5 | 211 | fOneMinusLambda(0.0), |
111e505b | 212 | fPID1(0), |
213 | fPID2(0), | |
214 | fSigma(0.0) | |
215 | { | |
216 | //Copy ctor needed by the coding conventions but not used | |
217 | Fatal("AliHBTLLWeights","copy ctor not implemented"); | |
218 | } | |
219 | /************************************************************/ | |
220 | ||
221 | AliHBTLLWeights& AliHBTLLWeights::operator=(const AliHBTLLWeights& /*source*/) | |
222 | { | |
223 | //Assignment operator needed by the coding conventions but not used | |
224 | Fatal("AliHBTLLWeights","assignment operator not implemented"); | |
225 | return * this; | |
226 | } | |
227 | /************************************************************/ | |
228 | ||
4fdf4eb3 | 229 | AliHBTLLWeights* AliHBTLLWeights::Instance() |
88cb7938 | 230 | { |
231 | // returns instance of class | |
232 | if (fgLLWeights) | |
233 | { | |
4fdf4eb3 | 234 | return fgLLWeights; |
88cb7938 | 235 | } |
236 | else | |
237 | { | |
238 | fgLLWeights = new AliHBTLLWeights(); | |
239 | return fgLLWeights; | |
240 | } | |
241 | } | |
526c2bd5 | 242 | /************************************************************/ |
7f92929e | 243 | |
dd82cadc | 244 | void AliHBTLLWeights::Set() |
245 | { | |
246 | //sets this as weighitng class | |
247 | Info("Set","Setting Lednicky-Lyuboshitz as Weighing Class"); | |
248 | ||
249 | if ( fgWeights == 0x0 ) | |
250 | { | |
251 | fgWeights = AliHBTLLWeights::Instance(); | |
252 | return; | |
253 | } | |
254 | if ( fgWeights == AliHBTLLWeights::Instance() ) return; | |
255 | delete fgWeights; | |
256 | fgWeights = AliHBTLLWeights::Instance(); | |
257 | } | |
258 | /************************************************************/ | |
259 | ||
7f92929e | 260 | Double_t AliHBTLLWeights::GetWeight(const AliHBTPair* partpair) |
261 | { | |
88cb7938 | 262 | // calculates weight for a pair |
37e71815 | 263 | static const Double_t kcmtofm = 1.e13; |
264 | static const Double_t kcmtoOneOverGeV = kcmtofm*fgkWcons; | |
88cb7938 | 265 | |
4fdf4eb3 | 266 | AliHBTParticle *part1 = partpair->Particle1(); |
267 | AliHBTParticle *part2 = partpair->Particle2(); | |
2f8eea63 | 268 | |
4fdf4eb3 | 269 | if ( (part1 == 0x0) || (part2 == 0x0)) |
88cb7938 | 270 | { |
271 | Error("GetWeight","Null particle pointer"); | |
272 | return 0.0; | |
273 | } | |
274 | ||
72e72d00 | 275 | if ( fPID1 != part1->GetPdgCode() ) return 1.0; |
276 | if ( fPID2 != part2->GetPdgCode() ) return 1.0; | |
88cb7938 | 277 | |
526c2bd5 | 278 | //takes a lot of time |
4fdf4eb3 | 279 | if ( (part1->Px() == part2->Px()) && |
280 | (part1->Py() == part2->Py()) && | |
281 | (part1->Pz() == part2->Pz()) ) | |
88cb7938 | 282 | { |
283 | return 0.0; | |
284 | } | |
285 | ||
4fdf4eb3 | 286 | if ((!fRandomPosition) && |
88cb7938 | 287 | (part1->Vx() == part2->Vx()) && |
288 | (part1->Vy() == part2->Vy()) && | |
289 | (part1->Vz() == part2->Vz()) ) | |
2f8eea63 | 290 | { |
4fdf4eb3 | 291 | return 0.0; |
2f8eea63 | 292 | } |
88cb7938 | 293 | |
526c2bd5 | 294 | if(fOneMinusLambda)//implemetation of non-zero intetcept parameter |
295 | { | |
296 | if( gRandom->Rndm() < fOneMinusLambda ) return 1.0; | |
297 | } | |
298 | ||
88cb7938 | 299 | FSI_MOM.P1X = part1->Px(); |
300 | FSI_MOM.P1Y = part1->Py(); | |
301 | FSI_MOM.P1Z = part1->Pz(); | |
302 | ||
303 | FSI_MOM.P2X = part2->Px(); | |
304 | FSI_MOM.P2Y = part2->Py(); | |
305 | FSI_MOM.P2Z = part2->Pz(); | |
306 | ||
37e71815 | 307 | FSI_COOR.X1 = part1->Vx()*kcmtoOneOverGeV; |
308 | FSI_COOR.Y1 = part1->Vy()*kcmtoOneOverGeV; | |
309 | FSI_COOR.Z1 = part1->Vz()*kcmtoOneOverGeV; | |
88cb7938 | 310 | FSI_COOR.T1 = part1->T(); |
311 | ||
37e71815 | 312 | FSI_COOR.X2 = part2->Vx()*kcmtoOneOverGeV; |
313 | FSI_COOR.Y2 = part2->Vy()*kcmtoOneOverGeV; | |
314 | FSI_COOR.Z2 = part2->Vz()*kcmtoOneOverGeV; | |
88cb7938 | 315 | FSI_COOR.T2 = part2->T(); |
4fdf4eb3 | 316 | |
317 | ltran12(); | |
7f92929e | 318 | |
88cb7938 | 319 | //this must be after ltran12 because it would overwrite what we set below |
320 | if (fRandomPosition) | |
321 | { | |
322 | Double_t rxcm = fSigma*gRandom->Gaus(); | |
323 | Double_t rycm = fSigma*gRandom->Gaus(); | |
324 | Double_t rzcm = fSigma*gRandom->Gaus(); | |
325 | ||
326 | FSI_PRF.X=rxcm*fgkWcons; | |
327 | FSI_PRF.Y=rycm*fgkWcons; | |
328 | FSI_PRF.Z=rzcm*fgkWcons; | |
329 | FSI_PRF.T=0.; | |
330 | ||
331 | Double_t rps=rxcm*rxcm+rycm*rycm+rzcm*rzcm; | |
332 | Double_t rp=TMath::Sqrt(rps); | |
333 | setpdist(rp); | |
334 | } | |
335 | ||
336 | fsiw(); | |
4fdf4eb3 | 337 | return LEDWEIGHT.WEIN; |
338 | } | |
7f92929e | 339 | /************************************************************/ |
88cb7938 | 340 | |
7f92929e | 341 | void AliHBTLLWeights::Init() |
4fdf4eb3 | 342 | { |
88cb7938 | 343 | //initial parameters of model |
344 | ||
4fdf4eb3 | 345 | FSI_NS.NS = fApproximationModel; |
346 | ||
88cb7938 | 347 | LEDWEIGHT.ITEST = fTest; |
348 | if(fTest) | |
349 | { | |
350 | FSI_NS.ICH = fColoumbSwitch; | |
351 | FSI_NS.ISI = fStrongInterSwitch; | |
352 | FSI_NS.IQS = fQuantStatSwitch; | |
353 | FSI_NS.I3C = fColWithResidNuclSwitch; | |
354 | LEDWEIGHT.IRANPOS = fRandomPosition; | |
355 | } | |
356 | ||
4fdf4eb3 | 357 | if ( (fPID1 == 0) || (fPID2 == 0) ) |
88cb7938 | 358 | { |
359 | Fatal("Init","Particles types are not set"); | |
360 | return;//pro forma | |
361 | } | |
c81f9591 | 362 | |
363 | ||
4fdf4eb3 | 364 | FSI_NS.LL = GetPairCode(fPID1,fPID2); |
88cb7938 | 365 | |
4fdf4eb3 | 366 | if (FSI_NS.LL == 0) |
88cb7938 | 367 | { |
368 | Fatal("Init","Particles types are not supported"); | |
369 | return;//pro forma | |
370 | } | |
371 | ||
c81f9591 | 372 | Info("Init","Setting PIDs %d %d. LL Code is %d",fPID1,fPID2,FSI_NS.LL); |
373 | ||
88cb7938 | 374 | |
4fdf4eb3 | 375 | TParticlePDG* tpart1 = TDatabasePDG::Instance()->GetParticle(fPID1); |
376 | if (tpart1 == 0x0) | |
88cb7938 | 377 | { |
378 | Fatal("init","We can not find particle with ID=%d in PDG DataBase",fPID1); | |
379 | return; | |
380 | } | |
381 | ||
4fdf4eb3 | 382 | FSI_POC.AM1=tpart1->Mass(); |
383 | FSI_POC.C1=tpart1->Charge(); | |
88cb7938 | 384 | |
4fdf4eb3 | 385 | TParticlePDG* tpart2 = TDatabasePDG::Instance()->GetParticle(fPID2); |
88cb7938 | 386 | //lv |
4fdf4eb3 | 387 | if (tpart2 == 0x0) |
88cb7938 | 388 | { |
389 | Fatal("init","We can not find particle with ID=%d in our DataBase",fPID2); | |
390 | return; | |
391 | } | |
392 | ||
4fdf4eb3 | 393 | FSI_POC.AM2=tpart2->Mass(); |
394 | FSI_POC.C1=tpart2->Charge(); | |
88cb7938 | 395 | |
4fdf4eb3 | 396 | led_bldata(); |
397 | fsiini(); | |
88cb7938 | 398 | |
399 | ||
400 | //constants for radii simulation | |
401 | ||
402 | if(fRandomPosition) | |
403 | { | |
404 | fSigma =TMath::Sqrt(2.)*fRadius; | |
405 | } | |
7f92929e | 406 | } |
88cb7938 | 407 | /************************************************************/ |
7f92929e | 408 | |
409 | Int_t AliHBTLLWeights::GetPairCode(const AliHBTPair* partpair) | |
410 | { | |
88cb7938 | 411 | //returns Code corresponding to that pair |
412 | return GetPairCode(partpair->Particle1()->GetPdgCode(),partpair->Particle2()->GetPdgCode()); | |
7f92929e | 413 | } |
88cb7938 | 414 | /************************************************************/ |
7f92929e | 415 | |
416 | Int_t AliHBTLLWeights::GetPairCode(Int_t pid1,Int_t pid2) | |
417 | { | |
88cb7938 | 418 | // returns code corresponding to the pair of PIDs |
419 | // pairCode 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | |
420 | // hpid: n p n alfa pi+ pi0 pi+ n p pi+ pi+ pi+ pi- K+ K+ K+ K- d d t t K0 K0 d p p p n | |
421 | // lpid: n p p alfa pi- pi0 pi+ d d K- K+ p p K- K+ p p d alfa t alfa K0 K0b t t alfa lambda lambda | |
422 | // NS=1 y/n: + + + + + - - - - - - - - - - - - - - - - - - - - - - - | |
423 | ||
424 | //alphas, deuterons and tyts are NOT supported here | |
425 | ||
7f92929e | 426 | Int_t chargefactor = 1; |
427 | Int_t hpid; //pid in higher row | |
428 | Int_t lpid; //pid in lower row | |
429 | Int_t code; //pairCode | |
430 | ||
431 | Bool_t swap; | |
432 | ||
88cb7938 | 433 | //determine the order of selcetion in switch |
7f92929e | 434 | if (TMath::Abs(pid1) < TMath::Abs(pid2) ) |
88cb7938 | 435 | { |
436 | if (pid1<0) chargefactor=-1; | |
437 | hpid=pid2*chargefactor; | |
438 | lpid=pid1*chargefactor; | |
439 | swap = kFALSE; | |
440 | } | |
7f92929e | 441 | else |
88cb7938 | 442 | { |
443 | if (pid2<0) chargefactor=-1; | |
444 | hpid=pid1*chargefactor; | |
445 | lpid=pid2*chargefactor; | |
446 | swap = kTRUE; | |
447 | } | |
448 | ||
449 | //mlv | |
450 | hpid=pid1; | |
451 | lpid=pid2; | |
452 | ||
453 | ||
454 | //Determine the pair code | |
7f92929e | 455 | switch (hpid) //switch on first particle id |
88cb7938 | 456 | { |
457 | case kNeutron: | |
7f92929e | 458 | switch (lpid) |
88cb7938 | 459 | { |
460 | case kNeutron: | |
461 | code = 1; //neutron neutron | |
462 | break; | |
463 | ||
464 | case kProton: | |
465 | code = 3; //neutron proton | |
466 | break; | |
467 | ||
468 | case kLambda0: | |
469 | code = 28; //neutron lambda | |
470 | break; | |
471 | ||
472 | default: | |
473 | return 0; //given pair not supported | |
474 | break; | |
475 | } | |
7f92929e | 476 | break; |
88cb7938 | 477 | |
478 | case kProton: | |
7f92929e | 479 | switch (lpid) |
88cb7938 | 480 | { |
481 | case kProton: | |
482 | code = 2; //proton proton | |
483 | break; | |
484 | ||
485 | case kLambda0: | |
486 | code = 27;//proton lambda | |
487 | break; | |
488 | ||
489 | default: | |
490 | return 0; //given pair not supported | |
491 | break; | |
492 | ||
493 | } | |
7f92929e | 494 | break; |
88cb7938 | 495 | |
496 | case kPiPlus: | |
497 | ||
7f92929e | 498 | switch (lpid) |
88cb7938 | 499 | { |
500 | case kPiPlus: | |
501 | code = 7; //piplus piplus | |
502 | break; | |
503 | ||
504 | case kPiMinus: | |
505 | code = 5; //piplus piminus | |
506 | break; | |
507 | ||
508 | case kKMinus: | |
509 | code = 10; //piplus Kminus | |
510 | break; | |
511 | ||
512 | case kKPlus: | |
513 | code = 11; //piplus Kplus | |
514 | break; | |
515 | ||
516 | case kProton: | |
517 | code = 12; //piplus proton | |
518 | chargefactor*=-1; | |
519 | break; | |
520 | ||
521 | default: | |
522 | return 0; //given pair not supported | |
523 | break; | |
524 | } | |
7f92929e | 525 | break; |
88cb7938 | 526 | case kPi0: |
7f92929e | 527 | switch (lpid) |
88cb7938 | 528 | { |
529 | case kPi0: | |
530 | code = 6; | |
531 | break; | |
532 | ||
533 | default: | |
534 | return 0; //given pair not supported | |
535 | break; | |
536 | } | |
7f92929e | 537 | break; |
538 | ||
88cb7938 | 539 | case kKPlus: |
7f92929e | 540 | switch (lpid) |
88cb7938 | 541 | { |
542 | case kKMinus: | |
543 | code = 14; //Kplus Kminus | |
544 | break; | |
545 | ||
546 | case kKPlus: | |
547 | code = 15; //Kplus Kplus | |
548 | break; | |
549 | ||
550 | case kProton: | |
551 | code = 16; //Kplus proton | |
552 | break; | |
553 | ||
554 | default: | |
555 | return 0; //given pair not supported | |
556 | break; | |
557 | } | |
7f92929e | 558 | break; |
559 | ||
88cb7938 | 560 | case kKMinus: |
7f92929e | 561 | switch (lpid) |
88cb7938 | 562 | { |
563 | case kProton: | |
564 | code = 17; //Kminus proton | |
565 | chargefactor*=1; | |
566 | break; | |
567 | ||
568 | default: | |
569 | return 0; //given pair not supported | |
570 | break; | |
571 | } | |
7f92929e | 572 | break; |
573 | ||
88cb7938 | 574 | case kK0: |
7f92929e | 575 | switch (lpid) |
88cb7938 | 576 | { |
577 | case kK0: | |
578 | code = 2; //Kzero Kzero | |
579 | break; | |
580 | ||
581 | case kK0Bar: | |
582 | code = 17; //Kzero KzeroBar | |
583 | break; | |
584 | ||
585 | default: | |
586 | return 0; //given pair not supported | |
587 | break; | |
588 | } | |
7f92929e | 589 | break; |
88cb7938 | 590 | |
591 | default: return 0; | |
592 | } | |
7f92929e | 593 | return code; |
594 | } | |
88cb7938 | 595 | /************************************************************/ |
596 | ||
597 | void AliHBTLLWeights::SetTest(Bool_t rtest) | |
598 | { | |
599 | //Sets fTest member | |
600 | fTest = rtest; | |
601 | } | |
602 | /************************************************************/ | |
603 | ||
604 | void AliHBTLLWeights::SetColoumb(Bool_t col) | |
605 | { | |
606 | // (ICH in fortran code) Coulomb interaction between the two particles ON (OFF) | |
607 | fColoumbSwitch = col; | |
608 | } | |
609 | /************************************************************/ | |
610 | ||
611 | void AliHBTLLWeights::SetQuantumStatistics(Bool_t qss) | |
612 | { | |
613 | //IQS: quantum statistics for the two particles ON (OFF) | |
614 | //if non-identical particles automatically off | |
615 | fQuantStatSwitch = qss; | |
616 | } | |
617 | /************************************************************/ | |
618 | ||
619 | void AliHBTLLWeights::SetStrongInterSwitch(Bool_t sis) | |
620 | { | |
621 | //ISI: strong interaction between the two particles ON (OFF) | |
622 | fStrongInterSwitch = sis; | |
623 | } | |
624 | /************************************************************/ | |
7f92929e | 625 | |
88cb7938 | 626 | void AliHBTLLWeights::SetColWithResidNuclSwitch(Bool_t crn) |
627 | { | |
628 | //I3C: Coulomb interaction with residual nucleus ON (OFF) | |
629 | fColWithResidNuclSwitch = crn; | |
630 | } | |
631 | /************************************************************/ | |
632 | ||
633 | void AliHBTLLWeights::SetApproxModel(Int_t ap) | |
634 | { | |
635 | //sets Model of Approximation (NS in Fortran code) | |
636 | fApproximationModel=ap; | |
637 | } | |
638 | /************************************************************/ | |
639 | ||
640 | void AliHBTLLWeights::SetRandomPosition(Bool_t rp) | |
641 | { | |
642 | //ON=kTRUE(OFF=kFALSE) | |
643 | //ON -- calculation of the Gauss source radii | |
644 | //if the generator don't allows the source generation (for example MeVSim) | |
645 | //if ON the following parameters are requested: | |
646 | fRandomPosition = rp; | |
647 | } | |
648 | /************************************************************/ | |
649 | ||
650 | void AliHBTLLWeights::SetR1dw(Double_t R) | |
651 | { | |
652 | //spherical source model radii | |
653 | fRadius=R; | |
654 | } | |
655 | /************************************************************/ | |
656 | ||
657 | void AliHBTLLWeights::SetParticlesTypes(Int_t pid1, Int_t pid2) | |
658 | { | |
659 | //set AliRoot particles types | |
660 | fPID1 = pid1; | |
661 | fPID2 = pid2; | |
662 | } | |
663 | /************************************************************/ | |
664 | ||
665 | void AliHBTLLWeights::SetNucleusCharge(Double_t ch) | |
666 | { | |
667 | // not used now (see comments in fortran code) | |
668 | fNuclCharge=ch; | |
669 | } | |
670 | /************************************************************/ | |
671 | ||
672 | void AliHBTLLWeights::SetNucleusMass(Double_t mass) | |
673 | { | |
674 | // (see comments in fortran code) | |
675 | fNuclMass=mass; | |
676 | } |