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e40b9538 | 1 | #ifndef ALIGENEMLIB_H |
2 | #define ALIGENEMLIB_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | /* $Id: AliGenEMlib.h 30052 2008-11-25 14:54:18Z morsch $ */ | |
7 | ||
8 | ///////////////////////////////////////////////////////////////////////////// | |
9 | // // | |
10 | // Implementation of AliGenEMlib for electron, di-electron, and photon // | |
11 | // cocktail calculations. // | |
12 | // It is based on AliGenGSIlib. // | |
13 | // // | |
14 | // Responsible: R.Averbeck@gsi.de // | |
15 | // // | |
16 | ///////////////////////////////////////////////////////////////////////////// | |
17 | ||
18 | #include "AliGenLib.h" | |
19 | class TRandom; | |
20 | ||
21 | class AliGenEMlib :public AliGenLib { | |
79738503 | 22 | public: |
23 | ||
2901e97c | 24 | enum Particle_t{ kPizero=0, kEta=1, kRho0=2, kOmega=3, kEtaprime=4, kPhi=5, kJpsi=6, |
25 | kSigma0=7, kK0s=8, kDeltaPlPl=9, kDeltaPl=10, kDeltaMi=11, kDeltaZero=12, | |
26 | kRhoPl=13, kRhoMi=14, kK0star=15, kDirectRealGamma=16, kDirectVirtGamma=17 }; | |
79738503 | 27 | |
28 | enum CollisionSystem_t {kpp900GeV=0x000, kpp2760GeV=0x100, kpp7TeV=0x200, kpPb=0x300, kPbPb=0x400}; | |
29 | ||
30 | enum Centrality_t{ kpp = 0x0, k0005=0x1, k0510=0x2, k1020=0x3, k2030=0x4, k3040=0x5, k4050=0x6, k5060=0x7, | |
31 | k0010=0x8, k2040=0x9, k4060=0xA, k6080=0xB, k0020=0xC, k0040=0xD, k2080=0xE, k4080=0xF, kCentralities=0x10}; | |
32 | ||
2901e97c | 33 | enum PtParamSetPi0_t{ kPizeroParam, kPizeroParamlow, kPizeroParamhigh, kPichargedParam, |
34 | kPichargedParamlow, kPichargedParamhigh, kPizeroParamAlter, | |
35 | kPizeroParamAlterlow, kPizeroParamAlterhigh, kNPi0Param, | |
36 | kPichargedParamNew, kPichargedParamOld }; | |
79738503 | 37 | |
2901e97c | 38 | enum PtParamSetEta_t{ kEtaMtScal=0, kEtaParampp, kEtaParampplow, kEtaParampphigh, |
39 | kEtaParamRatiopp, kEtaParamRatiopplow, kEtaParamRatiopphigh, | |
40 | kEtaParamPbPb, kEtaParamPPb }; | |
79738503 | 41 | |
2901e97c | 42 | enum PtParamSetOmega_t{ kOmegaMtScal=0, kOmegaParampp, kOmegaParampplow, kOmegaParampphigh, |
43 | kOmegaParamRatiopp, kOmegaParamRatiopplow, kOmegaParamRatiopphigh, | |
44 | kOmegaParamPbPb, kOmegaParamPPb }; | |
79738503 | 45 | |
2901e97c | 46 | enum PtParamSetPhi_t{ kPhiMtScal=0, kPhiParampp, kPhiParampplow, kPhiParampphigh, |
47 | kPhiParamPbPb, kPhiParamPPb }; | |
79738503 | 48 | |
49 | enum v2Sys_t{kLoV2Sys=-1, kNoV2Sys=0, kUpV2Sys=+1}; | |
50 | ||
51 | AliGenEMlib() { } ; | |
52 | ||
53 | static void SelectParams( Int_t collisionSystem, | |
54 | Int_t ptSelectPi0, | |
55 | Int_t ptSelectEta, | |
56 | Int_t ptSelectOmega, | |
57 | Int_t ptSelectPhi, | |
58 | Int_t centSelect=kpp, | |
59 | Int_t v2sys=kNoV2Sys) { | |
60 | fgSelectedCollisionsSystem = collisionSystem; | |
61 | fgSelectedPtParamPi0=ptSelectPi0; | |
62 | fgSelectedPtParamEta=ptSelectEta; | |
63 | fgSelectedPtParamOmega=ptSelectOmega; | |
64 | fgSelectedPtParamPhi=ptSelectPhi; | |
65 | fgSelectedCentrality=centSelect; | |
66 | fgSelectedV2Systematic=v2sys; | |
67 | } | |
68 | ||
69 | GenFunc GetPt(Int_t param, const char * tname=0) const; | |
70 | GenFunc GetY(Int_t param, const char * tname=0) const; | |
71 | GenFuncIp GetIp(Int_t param, const char * tname=0) const; | |
72 | GenFunc GetV2(Int_t param, const char * tname=0) const; | |
73 | ||
74 | //private: | |
75 | ||
76 | // General functions | |
77 | ||
78 | // General functions | |
79 | static Int_t fgSelectedCollisionsSystem; // selected pT parameter | |
80 | static Int_t fgSelectedPtParamPi0; // selected pT parameter | |
81 | static Int_t fgSelectedPtParamEta; // selected pT parameter | |
82 | static Int_t fgSelectedPtParamOmega; // selected pT parameter | |
83 | static Int_t fgSelectedPtParamPhi; // selected pT parameter | |
84 | static Int_t fgSelectedCentrality; // selected Centrality | |
85 | static Int_t fgSelectedV2Systematic; // selected v2 systematics, usefully values: -1,0,1 | |
86 | ||
87 | ||
88 | static Double_t PtModifiedHagedornThermal(Double_t pt, | |
89 | Double_t c, | |
90 | Double_t p0, | |
91 | Double_t p1, | |
92 | Double_t n, | |
93 | Double_t cT, | |
94 | Double_t T); | |
95 | ||
96 | ||
97 | ||
98 | static Double_t PtModifiedHagedornExp(Double_t pt, | |
99 | Double_t c, | |
100 | Double_t p0, | |
101 | Double_t p1, | |
102 | Double_t p2, | |
103 | Double_t n); | |
104 | ||
105 | ||
106 | static Double_t PtModifiedHagedornExp2(Double_t pt, | |
107 | Double_t c, | |
108 | Double_t a, | |
109 | Double_t b, | |
110 | Double_t p0, | |
111 | Double_t p1, | |
112 | Double_t d, | |
113 | Double_t n); | |
114 | ||
115 | ||
116 | static Double_t PtTsallis(Double_t pt, | |
117 | Double_t m, | |
118 | Double_t c, | |
119 | Double_t T, | |
120 | Double_t n); | |
121 | ||
122 | static Double_t PtParticleRatiopp(Double_t pt, | |
123 | Double_t m1, | |
124 | Double_t m2, | |
125 | Double_t c1, | |
126 | Double_t c2, | |
127 | Double_t T1, | |
128 | Double_t T2, | |
129 | Double_t n); | |
130 | ||
131 | static Double_t PtXQCD( Double_t pt, | |
132 | Double_t a, | |
133 | Double_t b, | |
134 | Double_t c, | |
135 | Double_t d, | |
136 | Double_t e, | |
137 | Double_t f); | |
138 | ||
139 | static Double_t PtModTsallis( Double_t pt, | |
6e38a462 | 140 | Double_t a, |
141 | Double_t b, | |
142 | Double_t c, | |
143 | Double_t d, | |
79738503 | 144 | Double_t e, |
145 | Double_t f, | |
146 | Double_t g, | |
147 | Double_t mass); | |
148 | ||
149 | static Double_t PtQCD( Double_t pt, | |
150 | Double_t a, | |
151 | Double_t b, | |
152 | Double_t c, | |
153 | Double_t d, | |
154 | Double_t e); | |
155 | ||
156 | static Double_t PtExponential(const Double_t *pt, const Double_t *param); | |
157 | static Double_t PtModifiedHagedornPowerlaw(const Double_t *pt, const Double_t *param); | |
158 | static Double_t PtDoublePowerlaw(const Double_t *pt, const Double_t *param); | |
159 | static Double_t IntegratedKrollWada(const Double_t *mh, const Double_t *); | |
160 | ||
161 | // direct gamma | |
162 | static Double_t PtPromptRealGamma(const Double_t *px, const Double_t *dummy); | |
163 | static Double_t PtPromptVirtGamma(const Double_t *px, const Double_t *dummy); | |
164 | static Double_t PtThermalRealGamma(const Double_t *px, const Double_t *dummy); | |
165 | static Double_t PtThermalVirtGamma(const Double_t *px, const Double_t *dummy); | |
166 | ||
167 | static Int_t IpDirectRealGamma(TRandom *ran); | |
168 | static Double_t PtDirectRealGamma(const Double_t *px, const Double_t *dummy); | |
169 | static Double_t YDirectRealGamma(const Double_t *py, const Double_t *dummy); | |
170 | static Double_t V2DirectRealGamma(const Double_t *px, const Double_t *dummy); | |
171 | ||
172 | static Int_t IpDirectVirtGamma(TRandom *ran); | |
173 | static Double_t PtDirectVirtGamma(const Double_t *px, const Double_t *dummy); | |
174 | static Double_t YDirectVirtGamma(const Double_t *py, const Double_t *dummy); | |
175 | static Double_t V2DirectVirtGamma(const Double_t *px, const Double_t *dummy); | |
176 | ||
177 | // Pizero | |
178 | static Int_t IpPizero(TRandom *ran); | |
179 | static Double_t PtPizero(const Double_t *px, const Double_t *dummy); | |
180 | static Double_t YPizero(const Double_t *py, const Double_t *dummy); | |
181 | static Double_t V2Pizero(const Double_t *px, const Double_t *dummy); | |
182 | ||
183 | // Eta | |
184 | static Int_t IpEta(TRandom *ran); | |
185 | static Double_t PtEta(const Double_t *px, const Double_t *dummy); | |
186 | static Double_t YEta(const Double_t *py, const Double_t *dummy); | |
187 | static Double_t V2Eta(const Double_t *px, const Double_t *dummy); | |
188 | ||
189 | // Rho | |
190 | static Int_t IpRho0(TRandom *ran); | |
191 | static Double_t PtRho0(const Double_t *px, const Double_t *dummy); | |
192 | static Double_t YRho0(const Double_t *py, const Double_t *dummy); | |
193 | static Double_t V2Rho0(const Double_t *py, const Double_t *dummy); | |
194 | ||
195 | ||
196 | // Omega | |
197 | static Int_t IpOmega(TRandom *ran); | |
198 | static Double_t PtOmega(const Double_t *px, const Double_t *dummy); | |
199 | static Double_t YOmega(const Double_t *py, const Double_t *dummy); | |
200 | static Double_t V2Omega(const Double_t *py, const Double_t *dummy); | |
201 | ||
202 | // Etaprime | |
203 | static Int_t IpEtaprime(TRandom *ran); | |
204 | static Double_t PtEtaprime(const Double_t *px, const Double_t *dummy); | |
205 | static Double_t YEtaprime(const Double_t *py, const Double_t *dummy); | |
206 | static Double_t V2Etaprime(const Double_t *py, const Double_t *dummy); | |
207 | ||
208 | // Phi | |
209 | static Int_t IpPhi(TRandom *ran); | |
210 | static Double_t PtPhi(const Double_t *px, const Double_t *dummy); | |
211 | static Double_t YPhi(const Double_t *py, const Double_t *dummy); | |
212 | static Double_t V2Phi(const Double_t *py, const Double_t *dummy); | |
213 | ||
214 | // Jpsi | |
215 | static Int_t IpJpsi(TRandom *ran); | |
216 | static Double_t PtJpsi(const Double_t *px, const Double_t *dummy); | |
217 | static Double_t YJpsi(const Double_t *py, const Double_t *dummy); | |
218 | static Double_t V2Jpsi(const Double_t *py, const Double_t *dummy); | |
219 | ||
220 | // Sigma | |
221 | static Int_t IpSigma(TRandom *ran); | |
222 | static Double_t PtSigma( const Double_t *px, const Double_t *dummy ); | |
223 | static Double_t YSigma(const Double_t *py, const Double_t *dummy); | |
224 | static Double_t V2Sigma0( const Double_t *px, const Double_t *dummy ); | |
225 | ||
226 | // K0short | |
227 | static Int_t IpK0short(TRandom *ran); | |
228 | static Double_t PtK0short( const Double_t *px, const Double_t *dummy ); | |
229 | static Double_t YK0short(const Double_t *py, const Double_t *dummy); | |
230 | static Double_t V2K0sshort( const Double_t *px, const Double_t *dummy ); | |
231 | ||
232 | // Delta++ | |
233 | static Int_t IpDeltaPlPl(TRandom *ran); | |
234 | static Double_t PtDeltaPlPl( const Double_t *px, const Double_t *dummy ); | |
235 | static Double_t YDeltaPlPl(const Double_t *py, const Double_t *dummy); | |
236 | static Double_t V2DeltaPlPl( const Double_t *px, const Double_t *dummy ); | |
237 | ||
238 | // Delta+ | |
239 | static Int_t IpDeltaPl(TRandom *ran); | |
240 | static Double_t PtDeltaPl( const Double_t *px, const Double_t *dummy ); | |
241 | static Double_t YDeltaPl(const Double_t *py, const Double_t *dummy); | |
242 | static Double_t V2DeltaPl( const Double_t *px, const Double_t *dummy ); | |
243 | ||
244 | // Delta- | |
245 | static Int_t IpDeltaMi(TRandom *ran); | |
246 | static Double_t PtDeltaMi( const Double_t *px, const Double_t *dummy ); | |
247 | static Double_t YDeltaMi(const Double_t *py, const Double_t *dummy); | |
248 | static Double_t V2DeltaMi( const Double_t *px, const Double_t *dummy ); | |
249 | ||
250 | // Delta0 | |
251 | static Int_t IpDeltaZero(TRandom *ran); | |
252 | static Double_t PtDeltaZero( const Double_t *px, const Double_t *dummy ); | |
253 | static Double_t YDeltaZero(const Double_t *py, const Double_t *dummy); | |
254 | static Double_t V2DeltaZero( const Double_t *px, const Double_t *dummy ); | |
255 | ||
256 | // Rho+ | |
257 | static Int_t IpRhoPl(TRandom *ran); | |
258 | static Double_t PtRhoPl( const Double_t *px, const Double_t *dummy ); | |
259 | static Double_t YRhoPl(const Double_t *py, const Double_t *dummy); | |
260 | static Double_t V2RhoPl( const Double_t *px, const Double_t *dummy ); | |
261 | ||
262 | // Rho- | |
263 | static Int_t IpRhoMi(TRandom *ran); | |
264 | static Double_t PtRhoMi( const Double_t *px, const Double_t *dummy ); | |
265 | static Double_t YRhoMi(const Double_t *py, const Double_t *dummy); | |
266 | static Double_t V2RhoMi( const Double_t *px, const Double_t *dummy ); | |
267 | ||
268 | // K0* | |
269 | static Int_t IpK0star(TRandom *ran); | |
270 | static Double_t PtK0star( const Double_t *px, const Double_t *dummy ); | |
271 | static Double_t YK0star(const Double_t *py, const Double_t *dummy); | |
272 | static Double_t V2K0star( const Double_t *px, const Double_t *dummy ); | |
273 | ||
274 | ||
275 | // General | |
276 | //static Double_t PtFlat(const Double_t *px, const Double_t *dummy); | |
277 | static Double_t YFlat(Double_t y); | |
278 | static Double_t MtScal(Double_t pt, Int_t np); | |
279 | static Double_t V2Param(const Double_t *px, const Double_t *param); | |
280 | static Double_t V2Flat(const Double_t *px, const Double_t *param); | |
281 | static Double_t KEtScal(Double_t pt, Int_t np, Int_t nq=2); | |
282 | static Double_t GetTAA(Int_t cent); | |
283 | ||
284 | static Double_t CrossOverLc(double a, double b, double x); | |
285 | static Double_t CrossOverRc(double a, double b, double x); | |
286 | ||
287 | static const Double_t fgkPtParam[kCentralities][10]; // parameters of pi pt spectrum | |
288 | static const Double_t fgkModTsallisParamPi0PbPb[kCentralities][7]; // parameters for ModTsallis function for pi0 in PbPb | |
289 | static const Double_t fgkModTsallisParamPiChargedPbPb[kCentralities][7]; // parameters for ModTsallis function for pi+- in PbPb | |
290 | static const Double_t fgkV2param[kCentralities][16]; // parameters of pi v2 | |
291 | static const Double_t fgkRawPtOfV2Param[kCentralities][10]; // parameters of the raw pt spectrum of v2 analysys | |
292 | static const Double_t fgkThermPtParam[kCentralities][2]; // parameters of thermal gamma pt | |
293 | static const Double_t fgkHM[16]; // particle masses | |
294 | static const Double_t fgkMtFactor[3][16]; // mt scaling factor | |
295 | static const Double_t fgkParamSetPi07TeV[kNPi0Param][7]; // parameters for pi0 in 7 TeV | |
296 | static const Double_t fgkParamSetPi02760GeV[kNPi0Param][7]; // parameters for pi0 in 2.76 TeV | |
297 | static const Double_t fgkParamSetPi0900GeV[kNPi0Param][7]; // parameters for pi0 in 0.9 TeV | |
298 | ||
299 | ClassDef(AliGenEMlib,1) | |
6e38a462 | 300 | |
e40b9538 | 301 | }; |
302 | ||
4ae1c9f0 | 303 | |
e40b9538 | 304 | #endif |