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ba15fdfb | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2009, 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 | **************************************************************************/ | |
bc7a3220 | 15 | #include <AliLog.h> |
16 | #include <TFormula.h> | |
17 | #include <TF1.h> | |
18 | #include <TCanvas.h> | |
19 | #include <TMath.h> | |
20 | #include <TFile.h> | |
21 | ||
ba15fdfb | 22 | #include "AliDielectronBtoJPSItoEleCDFfitFCN.h" |
23 | ||
24 | //_________________________________________________________________________ | |
25 | // Class AliDielectronBtoJPSItoEleCDFfitFCN | |
26 | // Definition of main function used in | |
27 | // unbinned log-likelihood fit for | |
28 | // the channel B -> JPsi + X -> e+e- + X | |
29 | // | |
30 | // Origin: C.Di Giglio | |
31 | // Contact: Carmelo.Digiglio@ba.infn.it , Giuseppe.Bruno@ba.infn.it | |
32 | //_________________________________________________________________________ | |
33 | ||
34 | ClassImp(AliDielectronBtoJPSItoEleCDFfitFCN) | |
35 | ||
36 | //_________________________________________________________________________________________________ | |
37 | AliDielectronBtoJPSItoEleCDFfitFCN::AliDielectronBtoJPSItoEleCDFfitFCN() : | |
38 | fFPlus(0.), | |
39 | fFMinus(0.), | |
40 | fFSym(0.), | |
41 | fintmMassSig(1.), | |
42 | fintmMassBkg(1.), | |
43 | fhCsiMC(0x0), | |
bc7a3220 | 44 | fShiftTemplate(0.), |
ba15fdfb | 45 | fMassWndHigh(0.), |
46 | fMassWndLow(0.), | |
bc7a3220 | 47 | fCrystalBallParam(kFALSE), |
48 | fChangeResolution(1.), | |
49 | fChangeMass(1.), | |
50 | fWeights(0), | |
51 | fLoadFunctions(kFALSE), | |
52 | fMultivariate(kFALSE), | |
53 | fFunBSaved(0x0), | |
54 | fFunBkgSaved(0x0), | |
55 | fResParams(0x0), | |
56 | fBkgParams(0x0), | |
57 | fMassWindows(0x0), | |
58 | fPtWindows(0x0), | |
59 | fExponentialParam(kTRUE), | |
60 | fSignalBinForExtrapolation(0) | |
ba15fdfb | 61 | { |
62 | // | |
63 | // constructor | |
64 | // | |
ba15fdfb | 65 | SetMassWndHigh(0.2); |
66 | SetMassWndLow(0.5); | |
5720c765 | 67 | fWeightType[0] = 1.; fWeightType[1] = 1.; fWeightType[2] = 1.; |
bc7a3220 | 68 | for(Int_t iPar = 0; iPar < 49; iPar++) fParameters[iPar] = 0.; |
5720c765 | 69 | fParameters[9] = 1.;fParameters[11] = 1.;fParameters[12] = 1.; |
bc7a3220 | 70 | |
71 | ||
72 | AliInfo("Instance of AliDielectronBtoJPSItoEleCDFfitFCN-class created"); | |
ba15fdfb | 73 | } |
74 | //_________________________________________________________________________________________________ | |
75 | AliDielectronBtoJPSItoEleCDFfitFCN::AliDielectronBtoJPSItoEleCDFfitFCN(const AliDielectronBtoJPSItoEleCDFfitFCN& source) : | |
76 | TNamed(source), | |
77 | fFPlus(source.fFPlus), | |
bc7a3220 | 78 | fFMinus(source.fFMinus), |
79 | fFSym(source.fFSym), | |
80 | fintmMassSig(source.fintmMassSig), | |
81 | fintmMassBkg(source.fintmMassBkg), | |
82 | fhCsiMC(source.fhCsiMC), | |
83 | fShiftTemplate(source.fShiftTemplate), | |
84 | fMassWndHigh(source.fMassWndHigh), | |
85 | fMassWndLow(source.fMassWndLow), | |
86 | fCrystalBallParam(source.fCrystalBallParam), | |
87 | fChangeResolution(source.fChangeResolution), | |
88 | fChangeMass(source.fChangeMass), | |
89 | fWeights(source.fWeights), | |
90 | fLoadFunctions(source.fLoadFunctions), | |
91 | fMultivariate(source.fMultivariate), | |
92 | fFunBSaved(source.fFunBSaved), | |
93 | fFunBkgSaved(source.fFunBkgSaved), | |
94 | fResParams(source.fResParams), | |
95 | fBkgParams(source.fBkgParams), | |
96 | fMassWindows(source.fMassWindows), | |
97 | fPtWindows(source.fPtWindows), | |
98 | fExponentialParam(source.fExponentialParam), | |
99 | fSignalBinForExtrapolation(source.fSignalBinForExtrapolation) | |
ba15fdfb | 100 | { |
101 | // | |
102 | // Copy constructor | |
103 | // | |
bc7a3220 | 104 | for(Int_t iPar = 0; iPar < 49; iPar++) fParameters[iPar] = source.fParameters[iPar]; |
5720c765 | 105 | for(Int_t iW=0; iW<2; iW++) fWeightType[iW] = source.fWeightType[iW]; |
ba15fdfb | 106 | } |
107 | //_________________________________________________________________________________________________ | |
108 | AliDielectronBtoJPSItoEleCDFfitFCN& AliDielectronBtoJPSItoEleCDFfitFCN::operator=(const AliDielectronBtoJPSItoEleCDFfitFCN& source) | |
109 | { | |
110 | // | |
111 | // Assignment operator | |
112 | // | |
113 | if(&source == this) return *this; | |
bc7a3220 | 114 | fFPlus = source.fFPlus; |
ba15fdfb | 115 | fFMinus = source.fFMinus; |
116 | fFSym = source.fFSym; | |
117 | fintmMassSig = source.fintmMassSig; | |
118 | fintmMassBkg = source.fintmMassBkg; | |
119 | fhCsiMC = source.fhCsiMC; | |
bc7a3220 | 120 | fLoadFunctions = source.fLoadFunctions; |
121 | fMultivariate = source.fMultivariate; | |
122 | fFunBSaved = source.fFunBSaved; | |
123 | fFunBkgSaved = source.fFunBkgSaved; | |
124 | fResParams = source.fResParams; | |
125 | fBkgParams = source.fBkgParams; | |
126 | fMassWindows = source.fMassWindows; | |
127 | fPtWindows = source.fPtWindows; | |
128 | fShiftTemplate = source.fShiftTemplate; | |
ba15fdfb | 129 | fCrystalBallParam = source.fCrystalBallParam; |
bc7a3220 | 130 | fExponentialParam = source.fExponentialParam; |
ba15fdfb | 131 | |
bc7a3220 | 132 | for(Int_t iPar = 0; iPar < 49; iPar++) fParameters[iPar] = source.fParameters[iPar]; |
ba15fdfb | 133 | return *this; |
134 | } | |
135 | //_________________________________________________________________________________________________ | |
136 | AliDielectronBtoJPSItoEleCDFfitFCN::~AliDielectronBtoJPSItoEleCDFfitFCN() | |
137 | { | |
138 | // | |
139 | // Default destructor | |
140 | // | |
141 | ||
142 | delete fhCsiMC; | |
bc7a3220 | 143 | delete fFunBSaved; |
144 | delete fFunBkgSaved; | |
145 | for(Int_t iPar = 0; iPar < 49; iPar++) fParameters[iPar] = 0.; | |
ba15fdfb | 146 | } |
147 | //_________________________________________________________________________________________________ | |
148 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateLikelihood(const Double_t* pseudoproperdecaytime, | |
bc7a3220 | 149 | const Double_t* invariantmass, const Double_t *pt, const Int_t *type, const Int_t ncand) const |
ba15fdfb | 150 | { |
151 | // | |
152 | // This function evaluates the Likelihood fnction | |
153 | // It returns the -Log(of the likelihood function) | |
154 | // | |
155 | Double_t f = 0.; | |
156 | Double_t ret = 0.; | |
157 | ||
158 | for(Int_t i=0; i < ncand; i++) { | |
bc7a3220 | 159 | f = EvaluateCDFfuncNorm(pseudoproperdecaytime[i],invariantmass[i],pt[i],type[i]); |
160 | if(f <= 0.) continue; | |
161 | ret += -2.*TMath::Log(f); | |
ba15fdfb | 162 | } |
5720c765 | 163 | return ret; |
ba15fdfb | 164 | } |
165 | //_________________________________________________________________________________________________ | |
166 | void AliDielectronBtoJPSItoEleCDFfitFCN::SetAllParameters(const Double_t* parameters) | |
167 | { | |
168 | // | |
169 | // Sets array of FCN parameters | |
170 | // | |
bc7a3220 | 171 | for(Int_t index = 0; index < 49; index++) fParameters[index] = parameters[index]; |
ba15fdfb | 172 | } |
173 | //_________________________________________________________________________________________________ | |
174 | void AliDielectronBtoJPSItoEleCDFfitFCN::ComputeMassIntegral() | |
175 | { | |
176 | // | |
177 | // this function compute the integral of the likelihood function | |
178 | // (theoretical function) in order to normalize it to unity | |
179 | // | |
180 | Double_t npm = 20000.; | |
181 | Double_t stepm; | |
182 | Double_t mx=0.; | |
183 | stepm = (fMassWndHigh-fMassWndLow)/npm; | |
184 | // compute integrals for invariant mass terms | |
185 | ||
186 | Double_t iMassSig; | |
187 | Double_t intmMassSig = 0.0; | |
188 | Double_t summMassSig = 0.0; | |
189 | for(iMassSig = 1.0; iMassSig<= npm/2.; iMassSig++) { | |
190 | mx = fMassWndLow + (iMassSig - .5)*stepm; | |
191 | summMassSig += EvaluateCDFInvMassSigDistr(mx); | |
192 | mx = fMassWndHigh - (iMassSig - .5)*stepm; | |
193 | summMassSig += EvaluateCDFInvMassSigDistr(mx); | |
194 | } | |
195 | intmMassSig = summMassSig*stepm; | |
196 | SetIntegralMassSig(intmMassSig); | |
197 | // | |
198 | Double_t iMassBkg; | |
199 | Double_t intmMassBkg = 0.0; | |
200 | Double_t summMassBkg = 0.0; | |
201 | for(iMassBkg = 1.0; iMassBkg <= npm/2.; iMassBkg++) { | |
202 | mx = fMassWndLow + (iMassBkg - .5)*stepm; | |
203 | summMassBkg += EvaluateCDFInvMassBkgDistr(mx); | |
204 | mx = fMassWndHigh - (iMassBkg - .5)*stepm; | |
205 | summMassBkg += EvaluateCDFInvMassBkgDistr(mx); | |
206 | } | |
207 | intmMassBkg = summMassBkg*stepm; | |
5720c765 | 208 | if(intmMassBkg < 1.e-05) intmMassBkg = 1.; |
209 | SetIntegralMassBkg(intmMassBkg); | |
ba15fdfb | 210 | } |
211 | //_________________________________________________________________________________________________ | |
212 | void AliDielectronBtoJPSItoEleCDFfitFCN::PrintStatus() | |
213 | { | |
214 | // | |
215 | // Print the parameters of the fits | |
216 | // | |
217 | printf("\n"); | |
218 | // background param | |
219 | printf("actual value of fWeightRes------------------------------------->> | %f \n", GetResWeight()); | |
220 | printf("actual value of fPos ------------------------------------------>> | %f \n", GetFPlus()); | |
221 | printf("actual value of fNeg ------------------------------------------>> | %f \n", GetFMinus()); | |
222 | printf("actual value of fSym ------------------------------------------>> | %f \n", GetFSym()); | |
bc7a3220 | 223 | printf("actual value of fSym1 ----------------------------------------->> | %f \n", GetFSym1()); |
ba15fdfb | 224 | printf("actual value of fOneOvLamPlus --------------------------------->> | %f \n", GetLamPlus()); |
225 | printf("actual value of fOneOvLamMinus -------------------------------->> | %f \n", GetLamMinus()); | |
226 | printf("actual value of fOneOvLamSym ---------------------------------->> | %f \n", GetLamSym()); | |
bc7a3220 | 227 | printf("actual value of fOneOvLamSym1 --------------------------------->> | %f \n", GetLamSym1()); |
ba15fdfb | 228 | printf("actual value of fFractionJpsiFromBeauty ----------------------->> | %f \n", GetFractionJpsiFromBeauty()); |
229 | printf("actual value of fFsig ----------------------------------------->> | %f \n", GetFsig()); | |
230 | ||
231 | if(fCrystalBallParam){ | |
232 | printf("actual value of fCrystalBallMmean ----------------------------->> | %f \n", GetCrystalBallMmean()); | |
233 | printf("actual value of fCrystalBallNexp ------------------------------>> | %f \n", GetCrystalBallNexp()); | |
234 | printf("actual value of fCrystalBallSigma ----------------------------->> | %f \n", GetCrystalBallSigma()); | |
235 | printf("actual value of fCrystalBallAlpha ----------------------------->> | %f \n", GetCrystalBallAlpha()); | |
236 | printf("actual value of fCrystalBallNorm ----------------------------->> | %f \n", GetCrystalBallNorm()); | |
237 | }else{ | |
238 | printf("actual value of fMpv ------------------------------------------>> | %f \n", GetCrystalBallMmean()); | |
239 | printf("actual value of fConstRovL ------------------------------------>> | %f \n", GetCrystalBallNexp()); | |
240 | printf("actual value of fSigmaL --------------------------------------->> | %f \n", GetCrystalBallSigma()); | |
241 | printf("actual value of fSigmaR --------------------------------------->> | %f \n", GetCrystalBallAlpha()); | |
242 | } | |
243 | ||
244 | // back Mass func | |
bc7a3220 | 245 | if(fExponentialParam){ |
246 | printf("actual value of normBkg ----------------------------------------->> | %f \n", GetBkgInvMassNorm()); | |
247 | printf("actual value of meanBkg ----------------------------------------->> | %f \n", GetBkgInvMassMean()); | |
248 | printf("actual value of slopeBkg ---------------------------------------->> | %f \n", GetBkgInvMassSlope()); | |
249 | printf("actual value of constBkg ---------------------------------------->> | %f \n", GetBkgInvMassConst()); | |
250 | }else{ | |
251 | printf("actual value of m^{0} ------------------------------------------->> | %f \n", GetBkgInvMassNorm()); | |
252 | printf("actual value of m^{1} ------------------------------------------->> | %f \n", GetBkgInvMassMean()); | |
253 | printf("actual value of m^{2} ------------------------------------------->> | %f \n", GetBkgInvMassSlope()); | |
254 | printf("actual value of m^{3} ------------------------------------------->> | %f \n", GetBkgInvMassConst()); | |
255 | printf("actual value of m^{4} ------------------------------------------->> | %f \n", GetPolyn4()); | |
256 | printf("actual value of m^{5} ------------------------------------------->> | %f \n", GetPolyn5()); | |
257 | } | |
258 | ||
5720c765 | 259 | // resolution func (First-First) |
260 | printf("actual value of norm1Gauss (FF) --------------------------------->> | %f \n", GetNormGaus1ResFunc(2)); | |
261 | printf("actual value of norm2Gauss (FF) --------------------------------->> | %f \n", GetNormGaus2ResFunc(2)); | |
262 | printf("actual value of fMean1Res (FF) ---------------------------------->> | %f \n", GetResMean1(2)); | |
263 | printf("actual value of fSigma1Res (FF) --------------------------------->> | %f \n", GetResSigma1(2)); | |
264 | printf("actual value of fMean2Res (FF) ---------------------------------->> | %f \n", GetResMean2(2)); | |
265 | printf("actual value of fSigma2Res (FF) --------------------------------->> | %f \n", GetResSigma2(2)); | |
266 | ||
267 | printf("actual value of alfaRes (FF) ------------------------------------>> | %f \n", GetResAlfa(2)); | |
268 | printf("actual value of lambdaRes (FF) ---------------------------------->> | %f \n", GetResLambda(2)); | |
269 | printf("actual value of normExpRes (FF) --------------------------------->> | %f \n", GetResNormExp(2)); | |
270 | ||
271 | // resolution func (First-Second) | |
272 | printf("actual value of norm1Gauss (FS) --------------------------------->> | %f \n", GetNormGaus1ResFunc(1)); | |
273 | printf("actual value of norm2Gauss (FS) --------------------------------->> | %f \n", GetNormGaus2ResFunc(1)); | |
274 | printf("actual value of fMean1Res (FS) ---------------------------------->> | %f \n", GetResMean1(1)); | |
275 | printf("actual value of fSigma1Res (FS) --------------------------------->> | %f \n", GetResSigma1(1)); | |
276 | printf("actual value of fMean2Res (FS) ---------------------------------->> | %f \n", GetResMean2(1)); | |
277 | printf("actual value of fSigma2Res (FS) --------------------------------->> | %f \n", GetResSigma2(1)); | |
278 | ||
279 | printf("actual value of alfaRes (FS) ------------------------------------>> | %f \n", GetResAlfa(1)); | |
280 | printf("actual value of lambdaRes (FS) ---------------------------------->> | %f \n", GetResLambda(1)); | |
281 | printf("actual value of normExpRes (FS) --------------------------------->> | %f \n", GetResNormExp(1)); | |
282 | ||
283 | // resolution func (Second-Second) | |
284 | printf("actual value of norm1Gauss (SS) --------------------------------->> | %f \n", GetNormGaus1ResFunc(0)); | |
285 | printf("actual value of norm2Gauss (SS) --------------------------------->> | %f \n", GetNormGaus2ResFunc(0)); | |
286 | printf("actual value of fMean1Res (SS) ---------------------------------->> | %f \n", GetResMean1(0)); | |
287 | printf("actual value of fSigma1Res (SS) --------------------------------->> | %f \n", GetResSigma1(0)); | |
288 | printf("actual value of fMean2Res (SS) ---------------------------------->> | %f \n", GetResMean2(0)); | |
289 | printf("actual value of fSigma2Res (SS) --------------------------------->> | %f \n", GetResSigma2(0)); | |
290 | ||
291 | printf("actual value of alfaRes (SS) ------------------------------------>> | %f \n", GetResAlfa(0)); | |
292 | printf("actual value of lambdaRes (SS) ---------------------------------->> | %f \n", GetResLambda(0)); | |
293 | printf("actual value of normExpRes (SS) --------------------------------->> | %f \n", GetResNormExp(0)); | |
294 | ||
295 | printf("\n"); | |
ba15fdfb | 296 | // integrals constants |
297 | printf("Actual value of normalization integral for MassSig ---------------->> | %f \n", GetIntegralMassSig()); | |
298 | printf("Actual value of normalization integral for MassBkg ---------------->> | %f \n", GetIntegralMassBkg()); | |
299 | ||
300 | printf("\n"); | |
301 | } | |
302 | //_________________________________________________________________________________________________ | |
d07ad639 | 303 | void AliDielectronBtoJPSItoEleCDFfitFCN::SetResolutionConstants(const Double_t* resolutionConst, Int_t type) |
ba15fdfb | 304 | { |
305 | // | |
306 | // Resolution function is parametrized as the sum of two gaussian | |
307 | // | |
5720c765 | 308 | Int_t index = (2-type)*9; |
309 | fParameters[20+index]=resolutionConst[1]; //mean1 | |
310 | fParameters[22+index]=resolutionConst[4]; //mean2 | |
311 | fParameters[18+index]=resolutionConst[0]; //norm1 | |
312 | fParameters[21+index]=resolutionConst[2]; //sigma1 | |
313 | fParameters[23+index]=resolutionConst[5]; //sigma2 | |
314 | fParameters[19+index]=resolutionConst[3]; //norm2 | |
315 | ||
316 | //exp values | |
317 | fParameters[24+index]=resolutionConst[6]; //alfa | |
318 | fParameters[25+index]=resolutionConst[7]; //lambda | |
319 | fParameters[26+index]=resolutionConst[8]; //norm3 | |
320 | return; | |
ba15fdfb | 321 | } |
322 | ||
5720c765 | 323 | //________________________________________________________________________________________________ |
bc7a3220 | 324 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFfunc(Double_t x, Double_t m, Double_t pt, Int_t type) const |
ba15fdfb | 325 | { |
5720c765 | 326 | // evaluate likelihood function |
bc7a3220 | 327 | //printf("CDF func ---> x = %f m = %f pt = %f type = %d \n",x,m,pt,type); |
328 | return fParameters[8]*EvaluateCDFfuncSignalPart(x,m, pt, type) + (1. - fParameters[8])*EvaluateCDFfuncBkgPart(x,m, pt, type); | |
ba15fdfb | 329 | } |
330 | ||
331 | //_________________________________________________________________________________________________ | |
bc7a3220 | 332 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFfuncNorm(Double_t x, Double_t m, Double_t pt, Int_t type) const |
ba15fdfb | 333 | { |
5720c765 | 334 | // evaluate likelihood function |
bc7a3220 | 335 | return EvaluateCDFfunc(x,m,pt, type); |
ba15fdfb | 336 | } |
337 | ||
338 | //_________________________________________________________________________________________________ | |
bc7a3220 | 339 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFfuncSignalPart(Double_t x, Double_t m, Double_t pt, Int_t type) const |
ba15fdfb | 340 | { |
5720c765 | 341 | // evaluate psproper signal |
bc7a3220 | 342 | return EvaluateCDFDecayTimeSigDistr(x,pt, type)*(EvaluateCDFInvMassSigDistr(m)/fintmMassSig); |
ba15fdfb | 343 | } |
344 | ||
345 | //_________________________________________________________________________________________________ | |
bc7a3220 | 346 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFDecayTimeSigDistr(Double_t x, Double_t pt, Int_t type) const |
ba15fdfb | 347 | { |
348 | // | |
349 | // Implementation of the Background part of the Likelyhood function | |
350 | // | |
ba15fdfb | 351 | Double_t retvalue = 0.; |
bc7a3220 | 352 | Double_t funBnorm = fMultivariate ? FunBsaved(x, pt, type) : FunB(x,pt, type) ; |
353 | Double_t funPnorm = ResolutionFunc(x, pt, type); | |
354 | retvalue = fParameters[7]*funBnorm + (1. - fParameters[7])*funPnorm; | |
ba15fdfb | 355 | return retvalue; |
356 | } | |
357 | ||
358 | //_________________________________________________________________________________________________ | |
359 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFInvMassSigDistr(Double_t m) const | |
360 | { | |
361 | // | |
362 | // Parametrization of signal part invariant mass distribution | |
363 | // It can be either Crystal Ball function or sum of two Landau | |
364 | // | |
ba15fdfb | 365 | Double_t fitval = 0.; |
bc7a3220 | 366 | // change inv Mass RMS fChangeMass |
ba15fdfb | 367 | if(fCrystalBallParam){ |
bc7a3220 | 368 | Double_t t = ((m-fParameters[9])/fChangeMass)/fParameters[11]; ; |
ba15fdfb | 369 | if (fParameters[12] < 0) t = -t; |
ba15fdfb | 370 | Double_t absAlpha = TMath::Abs((Double_t)fParameters[12]); |
371 | ||
372 | if (t >= -absAlpha) { | |
373 | return fParameters[13]*TMath::Exp(-0.5*t*t); | |
374 | } | |
375 | else { | |
376 | Double_t a = TMath::Power(fParameters[10]/absAlpha,fParameters[10])* TMath::Exp(-0.5*absAlpha*absAlpha); | |
377 | Double_t b= fParameters[10]/absAlpha - absAlpha; | |
378 | fitval = (fParameters[13]*a/TMath::Power(b - t, fParameters[10])); | |
379 | return fitval; | |
380 | } | |
381 | }else{ | |
382 | Double_t t=-1*m; | |
383 | Double_t tmpv=-1*fParameters[9]; | |
384 | fitval=TMath::Sqrt(TMath::Landau(t,tmpv,fParameters[11])); | |
385 | fitval += fParameters[10]*(TMath::Landau(m,fParameters[9],fParameters[12])); | |
386 | return fitval; | |
387 | } | |
388 | } | |
389 | //_________________________________________________________________________________________________ | |
bc7a3220 | 390 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::FunB(Double_t x, Double_t pt, Int_t type) const |
ba15fdfb | 391 | { |
392 | // | |
393 | // Parameterisation of the fit function for the x part of the Background | |
394 | // | |
bc7a3220 | 395 | Double_t np = 1000.0; |
ba15fdfb | 396 | Double_t sc = 10.; |
bc7a3220 | 397 | Double_t sigma3 = 1000.; |
ba15fdfb | 398 | Double_t xprime; |
399 | Double_t sum = 0.0; | |
400 | Double_t xlow,xupp; | |
401 | Double_t step; | |
402 | Double_t i; | |
403 | xlow = x - sc * sigma3 ; | |
404 | xupp = x + sc * sigma3 ; | |
405 | step = (xupp-xlow) / np; | |
406 | Double_t csiMCxprime = 0.; | |
407 | Double_t resolutionxdiff = 0.; | |
408 | Double_t xdiff = 0.; | |
409 | ||
410 | for(i=1.0; i<=np; i++){ | |
411 | xprime = xlow + (i-.5) * step; | |
412 | csiMCxprime = CsiMC(xprime); | |
413 | xdiff = xprime - x; | |
bc7a3220 | 414 | resolutionxdiff = ResolutionFunc(xdiff, pt, type); // normalized value |
ba15fdfb | 415 | sum += csiMCxprime * resolutionxdiff; |
416 | } | |
bc7a3220 | 417 | |
ba15fdfb | 418 | return step * sum ; |
419 | } | |
bc7a3220 | 420 | |
ba15fdfb | 421 | //_________________________________________________________________________________________________ |
bc7a3220 | 422 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::FunP(Double_t x, Double_t pt, Int_t type) const |
ba15fdfb | 423 | { |
424 | // | |
425 | // Parameterisation of the Prompt part for the x distribution | |
426 | // | |
bc7a3220 | 427 | return ResolutionFunc(x, pt, type); |
ba15fdfb | 428 | } |
429 | ||
430 | ||
431 | //_________________________________________________________________________________________________ | |
432 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::CsiMC(Double_t x) const | |
433 | { | |
434 | // | |
435 | // Distribution (template) of the x distribution for the x variable | |
436 | // for the J/psi coming from Beauty hadrons | |
437 | // | |
438 | Double_t returnvalue = 0.; | |
bc7a3220 | 439 | |
440 | if((fhCsiMC->FindBin(x-fShiftTemplate) > 0) && (fhCsiMC->FindBin(x-fShiftTemplate) < fhCsiMC->GetNbinsX()+1)) | |
441 | returnvalue = fhCsiMC->Interpolate(x-fShiftTemplate); | |
ba15fdfb | 442 | |
ba15fdfb | 443 | |
444 | return returnvalue; | |
445 | } | |
446 | ||
447 | //_________________________________________________________________________________________________ | |
bc7a3220 | 448 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFfuncBkgPart(Double_t x,Double_t m, Double_t pt, Int_t type) const |
ba15fdfb | 449 | { |
450 | // | |
451 | // Return the part of the likelihood function for the background hypothesis | |
452 | // | |
bc7a3220 | 453 | Double_t bkgValx = fMultivariate ? EvaluateCDFDecayTimeBkgDistrSaved(x,type,m,pt) : EvaluateCDFDecayTimeBkgDistr(x,type,m,pt); |
454 | return bkgValx*(EvaluateCDFInvMassBkgDistr(m)/fintmMassBkg); | |
455 | } | |
456 | ||
ba15fdfb | 457 | |
458 | //_________________________________________________________________________________________________ | |
bc7a3220 | 459 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFDecayTimeBkgDistr(Double_t x, Int_t type, Double_t m, Double_t pt) const |
ba15fdfb | 460 | { |
bc7a3220 | 461 | // |
462 | // it returns the value of the probability to have a given x for the background | |
463 | // in the pt, m , type correspondent range | |
464 | // | |
465 | Double_t ret = 0.; | |
466 | if(fMultivariate) | |
467 | ret = EvaluateCDFDecayTimeBkgDistrDifferential(x,type,m,pt); | |
468 | else ret = fParameters[0]/(fParameters[0]+fParameters[1]+fParameters[2]+fParameters[3]+fParameters[46])*ResolutionFunc(x, pt, type) + fParameters[1]/(fParameters[0]+fParameters[1]+fParameters[2]+fParameters[3]+fParameters[46])*FunBkgPos(x, pt,type) + fParameters[2]/(fParameters[0]+fParameters[1]+fParameters[2]+fParameters[3]+fParameters[46])*FunBkgNeg(x,pt,type) + fParameters[3]/(fParameters[0]+fParameters[1]+fParameters[2]+fParameters[3]+fParameters[46])*FunBkgSym(x, pt,type) + fParameters[46]/(fParameters[0]+fParameters[1]+fParameters[2]+fParameters[3]+fParameters[46])*FunBkgSym1(x,pt,type); | |
ba15fdfb | 469 | return ret; |
470 | } | |
471 | ||
472 | //_________________________________________________________________________________________________ | |
473 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFInvMassBkgDistr(Double_t m) const | |
474 | { | |
475 | // | |
476 | // it returns the value of the probability to have a given mass for the background | |
477 | // | |
478 | Double_t value = 0.; | |
bc7a3220 | 479 | if(fExponentialParam) |
480 | value = fParameters[14]*TMath::Exp(-1*(m-fParameters[15])/fParameters[16]) + fParameters[17]; | |
481 | else value = fParameters[14] + fParameters[15]*m + fParameters[16]*m*m + fParameters[17]*m*m*m + fParameters[47]*m*m*m*m + fParameters[48]*m*m*m*m*m; | |
482 | return value; | |
ba15fdfb | 483 | } |
484 | //_________________________________________________________________________________________________ | |
bc7a3220 | 485 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::FunBkgPos(Double_t x, Double_t pt, Int_t type) const |
ba15fdfb | 486 | { |
bc7a3220 | 487 | // |
ba15fdfb | 488 | // exponential with positive slopes for the background part (x) |
489 | // | |
bc7a3220 | 490 | Double_t np, sc, sigma3; |
491 | sc = 10.; | |
492 | if(fMultivariate){ np = 10000.0; sigma3 = 5000.;} | |
493 | else{ np = 1000.0; sigma3 = 1000.;} | |
494 | ||
ba15fdfb | 495 | Double_t xprime; |
496 | Double_t sum = 0.0; | |
497 | Double_t xlow,xupp; | |
498 | Double_t step; | |
499 | Double_t i; | |
500 | xlow = x - sc * sigma3 ; | |
501 | xupp = x + sc * sigma3 ; | |
502 | step = (xupp-xlow) / np; | |
503 | ||
504 | for(i=1.0; i<=np/2; i++) { | |
505 | xprime = xlow + (i-.5) * step; | |
bc7a3220 | 506 | if (xprime > 0) {sum += fParameters[4] * TMath::Exp(-1*xprime*fParameters[4])*(ResolutionFunc(xprime-x,pt,type));} |
ba15fdfb | 507 | xprime = xupp - (i-.5) * step; |
bc7a3220 | 508 | if (xprime > 0) {sum += fParameters[4] * TMath::Exp(-1*xprime*fParameters[4])*(ResolutionFunc(xprime-x,pt,type));} |
509 | } | |
ba15fdfb | 510 | |
511 | return step * sum ; | |
512 | } | |
513 | //_________________________________________________________________________________________________ | |
bc7a3220 | 514 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::FunBkgNeg(Double_t x, Double_t pt, Int_t type) const |
515 | { | |
ba15fdfb | 516 | // |
517 | // exponential with negative slopes for the background part (x) | |
518 | // | |
bc7a3220 | 519 | Double_t np, sc, sigma3; |
520 | sc = 10.; | |
521 | if(fMultivariate){ np = 10000.0; sigma3 = 5000.;} | |
522 | else{ np = 1000.0; sigma3 = 1000.;} | |
523 | ||
ba15fdfb | 524 | Double_t xprime; |
525 | Double_t sum = 0.0; | |
526 | Double_t xlow,xupp; | |
527 | Double_t step; | |
528 | Double_t i; | |
529 | xlow = x - sc * sigma3 ; | |
530 | xupp = x + sc * sigma3 ; | |
531 | step = (xupp-xlow) / np; | |
532 | ||
533 | for(i=1.0; i<=np/2; i++) { | |
534 | ||
535 | xprime = xlow + (i-.5) * step; | |
bc7a3220 | 536 | if (xprime < 0) {sum += fParameters[5] * TMath::Exp(xprime*fParameters[5]) * (ResolutionFunc(xprime-x,pt,type));} |
ba15fdfb | 537 | |
538 | xprime = xupp - (i-.5) * step; | |
bc7a3220 | 539 | if (xprime < 0) {sum += fParameters[5] * TMath::Exp(xprime*fParameters[5]) * (ResolutionFunc(xprime-x,pt,type));} |
ba15fdfb | 540 | } |
541 | ||
542 | return step * sum ; | |
543 | } | |
544 | //_________________________________________________________________________________________________ | |
bc7a3220 | 545 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::FunBkgSym(Double_t x, Double_t pt, Int_t type) const |
ba15fdfb | 546 | { |
547 | // | |
548 | // exponential with both positive and negative slopes for the background part (x) | |
549 | // | |
bc7a3220 | 550 | Double_t np, sc, sigma3; |
551 | sc = 10.; | |
552 | if(fMultivariate){ np = 10000.0; sigma3 = 5000.;} | |
553 | else{ np = 1000.0; sigma3 = 1000.;} | |
554 | ||
ba15fdfb | 555 | Double_t xprime; |
556 | Double_t sum1 = 0.0; | |
557 | Double_t sum2 = 0.0; | |
558 | Double_t xlow,xupp; | |
559 | Double_t step; | |
560 | Double_t i; | |
561 | xlow = x - sc * sigma3 ; | |
562 | xupp = x + sc * sigma3 ; | |
563 | step = (xupp-xlow) / np; | |
564 | ||
565 | for(i=1.0; i<=np/2; i++) { | |
566 | ||
567 | xprime = xlow + (i-.5) * step; | |
bc7a3220 | 568 | if (xprime > 0) {sum1 += 0.5 * fParameters[6]*TMath::Exp(-1*xprime*fParameters[6]) * (ResolutionFunc(xprime-x,pt,type));} |
569 | if (xprime < 0) {sum2 += 0.5 * fParameters[6]*TMath::Exp(xprime*fParameters[6]) * (ResolutionFunc(xprime-x,pt,type));} | |
ba15fdfb | 570 | |
571 | xprime = xupp - (i-.5) * step; | |
bc7a3220 | 572 | if (xprime > 0) {sum1 += 0.5 * fParameters[6]*TMath::Exp(-1*xprime*fParameters[6]) * (ResolutionFunc(xprime-x,pt,type));} |
573 | if (xprime < 0) {sum2 += 0.5 * fParameters[6]*TMath::Exp(xprime*fParameters[6]) * (ResolutionFunc(xprime-x,pt,type));} | |
ba15fdfb | 574 | } |
575 | ||
576 | return step*(sum1 + sum2) ; | |
577 | } | |
bc7a3220 | 578 | |
579 | //_________________________________________________________________________________________________ | |
580 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::FunBkgSym1(Double_t x, Double_t pt, Int_t type) const | |
581 | { | |
582 | // | |
583 | // exponential with both positive and negative slopes for the background part (x) | |
584 | // | |
585 | Double_t np, sc, sigma3; | |
586 | sc = 10.; | |
587 | if(fMultivariate){ np = 10000.0; sigma3 = 5000.;} | |
588 | else{ np = 1000.0; sigma3 = 1000.;} | |
589 | ||
590 | Double_t xprime; | |
591 | Double_t sum1 = 0.0; | |
592 | Double_t sum2 = 0.0; | |
593 | Double_t xlow,xupp; | |
594 | Double_t step; | |
595 | Double_t i; | |
596 | xlow = x - sc * sigma3 ; | |
597 | xupp = x + sc * sigma3 ; | |
598 | step = (xupp-xlow) / np; | |
599 | ||
600 | for(i=1.0; i<=np/2; i++) { | |
601 | ||
602 | xprime = xlow + (i-.5) * step; | |
603 | if (xprime > 0) {sum1 += 0.5 * fParameters[45]*TMath::Exp(-1*xprime*fParameters[45]) * (ResolutionFunc(xprime-x,pt,type));} | |
604 | if (xprime < 0) {sum2 += 0.5 * fParameters[45]*TMath::Exp(xprime*fParameters[45]) * (ResolutionFunc(xprime-x,pt,type));} | |
605 | ||
606 | xprime = xupp - (i-.5) * step; | |
607 | if (xprime > 0) {sum1 += 0.5 * fParameters[45]*TMath::Exp(-1*xprime*fParameters[45]) * (ResolutionFunc(xprime-x,pt,type));} | |
608 | if (xprime < 0) {sum2 += 0.5 * fParameters[45]*TMath::Exp(xprime*fParameters[45]) * (ResolutionFunc(xprime-x,pt,type));} | |
609 | } | |
610 | ||
611 | return step*(sum1 + sum2) ; | |
612 | } | |
613 | ||
614 | ||
ba15fdfb | 615 | //_________________________________________________________________________________________________ |
bc7a3220 | 616 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::ResolutionFunc(Double_t x, Double_t pt, Int_t type) const |
ba15fdfb | 617 | { |
618 | // | |
619 | // parametrization with 2 gaus | |
620 | // | |
bc7a3220 | 621 | x = x/fChangeResolution; |
5720c765 | 622 | Int_t index = (2-type)*9; |
623 | Double_t mean1 = fParameters[20+index]; | |
624 | Double_t mean2 = fParameters[22+index]; | |
625 | Double_t norm1 = fParameters[18+index]; | |
626 | Double_t sigma1 = fParameters[21+index]; | |
627 | Double_t sigma2 = fParameters[23+index]; | |
628 | Double_t norm2 = fParameters[19+index]; | |
629 | //exp values | |
630 | Double_t alfa = fParameters[24+index]; | |
631 | Double_t lambda = fParameters[25+index]; | |
632 | Double_t norm3 = fParameters[26+index]; | |
633 | ||
bc7a3220 | 634 | if(fMultivariate) // set parameters from matrix |
635 | { | |
636 | //pt dependence | |
637 | Int_t binPt = -1.; | |
638 | for(int j=0; j<fPtWindows->GetSize()-1; j++) {if(fPtWindows->At(j)<pt && pt<fPtWindows->At(j+1)) binPt = j;} | |
639 | norm1 = fResParams[binPt][type][0]; | |
640 | mean1 = fResParams[binPt][type][1]; | |
641 | sigma1 = fResParams[binPt][type][2]; | |
642 | norm2 = fResParams[binPt][type][3]; | |
643 | mean2 = fResParams[binPt][type][4]; | |
644 | sigma2 = fResParams[binPt][type][5]; | |
645 | alfa = fResParams[binPt][type][6]; | |
646 | lambda = fResParams[binPt][type][7]; | |
647 | norm3 = fResParams[binPt][type][8]; | |
648 | } | |
649 | ||
5720c765 | 650 | Double_t ret = 0.; Double_t fitval = 0; |
651 | if(TMath::Abs(x)<=alfa) fitval = (lambda-1)/(2*alfa*lambda); | |
652 | else fitval = ((lambda-1)/(2*alfa*lambda))*TMath::Power(alfa,lambda)*(TMath::Power(TMath::Abs(x),-1*lambda)); | |
653 | ||
654 | ret = (norm1/(norm1+norm2+norm3))*((1/(sigma1*TMath::Sqrt(2*TMath::Pi())))*TMath::Exp(-0.5*((x-mean1)/sigma1)*((x-mean1)/sigma1))) + (norm2/(norm1+norm2+norm3))*((1/(sigma2*TMath::Sqrt(2*TMath::Pi())))*TMath::Exp(-0.5*((x-mean2)/sigma2)*((x-mean2)/sigma2))) + (norm3/(norm1+norm2+norm3))*fitval; | |
655 | ||
bc7a3220 | 656 | return ret/fChangeResolution; |
5720c765 | 657 | } |
ba15fdfb | 658 | |
bc7a3220 | 659 | |
ba15fdfb | 660 | //_________________________________________________________________________________________________ |
5720c765 | 661 | TF1* AliDielectronBtoJPSItoEleCDFfitFCN::GetCsiMC(Double_t xmin, Double_t xmax, Double_t normalization) |
ba15fdfb | 662 | { |
663 | // return the pointer to the templateMC function | |
5720c765 | 664 | TF1* templateMC = new TF1("MCtemplate",this,&AliDielectronBtoJPSItoEleCDFfitFCN::CsiMCfunc,xmin,xmax,1); |
665 | templateMC->SetParameter(0,normalization); | |
666 | templateMC->SetNpx(5000); | |
ba15fdfb | 667 | return (TF1*)templateMC->Clone(); |
668 | } | |
669 | ||
670 | //__________________________________________________________________________________________________ | |
bc7a3220 | 671 | TF1* AliDielectronBtoJPSItoEleCDFfitFCN::GetResolutionFunc(Double_t xmin, Double_t xmax, Double_t normalization, Double_t pt, Int_t type){ |
ba15fdfb | 672 | // return the pointer to the resolution function |
bc7a3220 | 673 | TF1* resFunc = new TF1(Form("resolutionFunc_%d",type),this,&AliDielectronBtoJPSItoEleCDFfitFCN::ResolutionFuncf,xmin,xmax,3); |
5720c765 | 674 | resFunc->SetParameter(0,normalization); |
bc7a3220 | 675 | resFunc->SetParameter(1,pt); |
676 | resFunc->SetParameter(2,(Double_t)type); | |
ba15fdfb | 677 | resFunc->SetNpx(5000); |
678 | return (TF1*)resFunc->Clone(); | |
679 | } | |
680 | ||
5720c765 | 681 | //__________________________________________________________________________________________________ |
682 | TF1* AliDielectronBtoJPSItoEleCDFfitFCN::GetResolutionFuncAllTypes(Double_t xmin, Double_t xmax, Double_t normalization){ | |
683 | // return the pointer to the resolution function | |
684 | TF1* resFunc = new TF1(Form("resolutionFunc"),this,&AliDielectronBtoJPSItoEleCDFfitFCN::ResolutionFuncAllTypes,xmin,xmax,1); | |
685 | resFunc->SetParameter(0,normalization); | |
686 | resFunc->SetNpx(5000); | |
687 | return (TF1*)resFunc->Clone(); | |
688 | } | |
689 | ||
ba15fdfb | 690 | //___________________________________________________________________________________________________ |
bc7a3220 | 691 | TF1* AliDielectronBtoJPSItoEleCDFfitFCN::GetEvaluateCDFDecayTimeBkgDistr(Double_t xmin, Double_t xmax, Double_t normalization, Int_t type, Double_t mass, Double_t pt, Int_t npx){ |
ba15fdfb | 692 | // return the pointer to the background x distribution function |
bc7a3220 | 693 | TF1 *backFunc = new TF1(Form("backFunc_%d_%1.2f_%1.2f",type,mass,pt),this,&AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFDecayTimeBkgDistrFunc,xmin,xmax,4); |
5720c765 | 694 | backFunc->SetParameter(0,normalization); |
bc7a3220 | 695 | backFunc->SetParameter(1,(Double_t)type); |
696 | backFunc->SetParameter(2,mass); | |
697 | backFunc->SetParameter(3,pt); | |
698 | backFunc->SetNpx(npx); | |
ba15fdfb | 699 | return (TF1*)backFunc->Clone(); |
700 | } | |
701 | ||
5720c765 | 702 | //___________________________________________________________________________________________________ |
703 | TF1* AliDielectronBtoJPSItoEleCDFfitFCN::GetEvaluateCDFDecayTimeBkgDistrAllTypes(Double_t xmin, Double_t xmax, Double_t normalization){ | |
704 | // return the pointer to the background x distribution function | |
bc7a3220 | 705 | TF1 *backFuncNew = new TF1(Form("backFunc_%f",normalization),this,&AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFDecayTimeBkgDistrFuncAllTypes,xmin,xmax,1); |
706 | backFuncNew->SetParameter(0,normalization); | |
707 | backFuncNew->SetNpx(5000); | |
708 | return (TF1*)backFuncNew->Clone(); | |
5720c765 | 709 | } |
710 | ||
ba15fdfb | 711 | //__________________________________________________________________________________________________ |
5720c765 | 712 | TF1* AliDielectronBtoJPSItoEleCDFfitFCN::GetEvaluateCDFDecayTimeSigDistr(Double_t xmin, Double_t xmax, Double_t normalization, Double_t type){ |
ba15fdfb | 713 | // return the pointer to the signal x distribution function |
5720c765 | 714 | TF1 *signFunc = new TF1("signalFunc",this,&AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFDecayTimeSigDistrFunc,xmin,xmax,2); |
715 | signFunc->SetParameter(0,normalization); | |
716 | signFunc->SetParameter(1,type); | |
ba15fdfb | 717 | signFunc->SetNpx(5000); |
718 | return (TF1*)signFunc->Clone(); | |
719 | } | |
5720c765 | 720 | |
721 | //____________________________________________________________________________________________________ | |
722 | TF1* AliDielectronBtoJPSItoEleCDFfitFCN::GetEvaluateCDFInvMassBkgDistr(Double_t mMin, Double_t mMax, Double_t normalization){ | |
723 | // return the pointer to the invariant mass distribution for the background | |
724 | TF1 * invMassBkg = new TF1("invMassBkg",this,&AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFInvMassBkgDistrFunc,mMin,mMax,1); | |
725 | invMassBkg->SetParameter(0,normalization); | |
726 | invMassBkg->SetNpx(5000); | |
727 | return (TF1*)invMassBkg->Clone(); | |
728 | } | |
729 | ||
730 | ||
731 | //____________________________________________________________________________________________________ | |
732 | TF1* AliDielectronBtoJPSItoEleCDFfitFCN::GetEvaluateCDFInvMassSigDistr(Double_t mMin, Double_t mMax, Double_t normalization){ | |
733 | // return the pointer to the invariant mass distribution for the signal | |
734 | TF1 * invMassSig = new TF1("invMassSig",this,&AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFInvMassSigDistrFunc,mMin,mMax,1); | |
735 | invMassSig->SetParameter(0,normalization); | |
736 | invMassSig->SetNpx(5000); | |
737 | return (TF1*)invMassSig->Clone(); | |
738 | } | |
739 | ||
740 | //____________________________________________________________________________________________________ | |
741 | TF1 *AliDielectronBtoJPSItoEleCDFfitFCN::GetEvaluateCDFInvMassTotalDistr(Double_t mMin, Double_t mMax, Double_t normalization){ | |
742 | // return the pointer to the invariant mass distribution | |
743 | TF1 * invMassTot = new TF1("invMassTot",this,&AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFInvMassTotalDistr,mMin,mMax,1); | |
744 | invMassTot->SetParameter(0,normalization); | |
745 | invMassTot->SetNpx(5000); | |
746 | return (TF1*)invMassTot->Clone(); | |
747 | } | |
748 | ||
749 | //____________________________________________________________________________________________________ | |
750 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFInvMassTotalDistr(const Double_t* x, const Double_t *par) const | |
751 | { | |
752 | // evaluate invariant mass total distribution | |
753 | Double_t value = 0; | |
754 | Double_t xx = x[0]; | |
755 | value = ((EvaluateCDFInvMassSigDistr(xx)/fintmMassSig)*fParameters[8] + (1-fParameters[8])*(EvaluateCDFInvMassBkgDistr(xx)/fintmMassBkg))*par[0]; | |
756 | return value; | |
757 | } | |
758 | ||
759 | //____________________________________________________________________________________________________ | |
bc7a3220 | 760 | TF1 *AliDielectronBtoJPSItoEleCDFfitFCN::GetEvaluateCDFDecayTimeTotalDistr(Double_t xMin, Double_t xMax, Double_t normalization,Double_t pt, Int_t type){ |
5720c765 | 761 | // return the pointer to the pseudoproper distribution for the background |
bc7a3220 | 762 | TF1 *decayTimeTot = new TF1(Form("decayTimeTot_%d",type),this,&AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFDecayTimeTotalDistr,xMin,xMax,3); |
5720c765 | 763 | decayTimeTot->SetParameter(0,normalization); |
bc7a3220 | 764 | decayTimeTot->SetParameter(1,pt); |
765 | decayTimeTot->SetParameter(2,(Double_t)type); | |
5720c765 | 766 | decayTimeTot->SetNpx(5000); |
767 | return (TF1*)decayTimeTot->Clone(); | |
768 | } | |
769 | ||
770 | //____________________________________________________________________________________________________ | |
771 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFDecayTimeTotalDistr(const Double_t* x, const Double_t *par) const | |
772 | { | |
773 | // evaluate the total pseudoproper distribution for a given candidate's type. par[1] should be the candidate's type. | |
774 | Double_t value = 0; | |
775 | Double_t xx = x[0]; | |
bc7a3220 | 776 | value = (fParameters[8]*EvaluateCDFDecayTimeSigDistr(xx,par[1],(Int_t)par[2]) + (1-fParameters[8])*EvaluateCDFDecayTimeBkgDistr(xx,(Int_t)par[2],par[1]))*par[0]; |
5720c765 | 777 | return value; |
778 | } | |
779 | ||
780 | //____________________________________________________________________________________________________ | |
781 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFDecayTimeTotalDistrAllTypes(const Double_t* x, const Double_t *par) const | |
782 | { | |
783 | // evaluate the total pseudoproper distribution considering all candidate's types | |
784 | Double_t value = 0; | |
785 | Double_t xx = x[0]; | |
786 | ||
bc7a3220 | 787 | value = (fParameters[8]*(fWeightType[2]*EvaluateCDFDecayTimeSigDistr(xx,200.,2)+fWeightType[1]*EvaluateCDFDecayTimeSigDistr(xx,200.,1)+fWeightType[0]*EvaluateCDFDecayTimeSigDistr(xx,200.,0)))+((1-fParameters[8])*(fWeightType[2]*EvaluateCDFDecayTimeBkgDistr(xx,2,3.09,200.) + fWeightType[1]*EvaluateCDFDecayTimeBkgDistr(xx,1,3.09,200.)+fWeightType[0]*EvaluateCDFDecayTimeBkgDistr(xx,0,3.09,200.))); |
5720c765 | 788 | |
789 | return value*par[0]; | |
790 | } | |
791 | ||
792 | //____________________________________________________________________________________________________ | |
793 | TF1 *AliDielectronBtoJPSItoEleCDFfitFCN::GetEvaluateCDFDecayTimeTotalDistrAllTypes(Double_t xMin, Double_t xMax, Double_t normalization){ | |
794 | // return the pointer to the pseudoproper function for the background considering all candidate's types | |
795 | TF1 *decayTimeTot = new TF1(Form("decayTimeTot"),this,&AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFDecayTimeTotalDistrAllTypes,xMin,xMax,1); | |
796 | decayTimeTot->SetParameter(0,normalization); | |
797 | decayTimeTot->SetNpx(5000); | |
798 | return (TF1*)decayTimeTot->Clone(); | |
799 | } | |
800 | ||
801 | ||
802 | //____________________________________________________________________________________________________ | |
bc7a3220 | 803 | TF1 * AliDielectronBtoJPSItoEleCDFfitFCN::GetFunB(Double_t xmin, Double_t xmax, Double_t normalization, Double_t pt, Int_t type, Int_t npx){ |
5720c765 | 804 | // return the pointer to the function that describe secondary jpsi pseudoproper distribution for a given candidate's type |
bc7a3220 | 805 | TF1* funb = new TF1(Form("secondaryJpsiConvolution_%d_%1.2f",type,pt),this,&AliDielectronBtoJPSItoEleCDFfitFCN::FunBfunc,xmin,xmax,3); |
5720c765 | 806 | funb->SetParameter(0,normalization); |
bc7a3220 | 807 | funb->SetParameter(1,pt); |
808 | funb->SetParameter(2,(Double_t)type); | |
809 | funb->SetNpx(npx); | |
5720c765 | 810 | return (TF1*)funb->Clone(); |
811 | } | |
812 | ||
813 | //____________________________________________________________________________________________________ | |
814 | TF1 * AliDielectronBtoJPSItoEleCDFfitFCN::GetFunBAllTypes(Double_t xmin, Double_t xmax, Double_t normalization){ | |
bc7a3220 | 815 | // return the pointer to the function that describe secondary jpsi pseudoproper distribution for all types |
5720c765 | 816 | TF1* funb = new TF1(Form("secondaryJpsiConvolution"),this,&AliDielectronBtoJPSItoEleCDFfitFCN::FunBfuncAllTypes,xmin,xmax,1); |
817 | funb->SetParameter(0,normalization); | |
818 | funb->SetNpx(5000); | |
819 | return (TF1*)funb->Clone(); | |
820 | } | |
821 | ||
bc7a3220 | 822 | // |
823 | // methods below are needed to perform the multivariate fit (pt,mass,type); this can be enabled | |
824 | // by the boolean fMultivariate; if functions to describe pseudoproper | |
825 | // decay lenght in pt,m, type bins have been | |
826 | // already computed, they can be loaded from the file | |
827 | // switching-on the option fLoadFunction (this to avoid the | |
828 | // calculation of convolutions and speed-up the likelihood fit) | |
829 | // | |
830 | ||
831 | //____________________________________________________________________________________________________ | |
832 | void AliDielectronBtoJPSItoEleCDFfitFCN::SetBackgroundSpecificParameters(Int_t pt, Int_t mb, Int_t tp){ | |
833 | // | |
834 | // methods to set specific background parameters in bins(pt, inv. mass, type) | |
835 | // | |
836 | for(int j=0; j<4;j++) fParameters[j]=fBkgParams[pt][mb][tp][j]; | |
837 | for(int k=5; k<8;k++) fParameters[k-1]=fBkgParams[pt][mb][tp][k]; | |
838 | fParameters[45] = fBkgParams[pt][mb][tp][8]; | |
839 | fParameters[46] = fBkgParams[pt][mb][tp][4]; | |
840 | return; | |
841 | } | |
842 | ||
843 | //_______________________________________________________________________________________________________ | |
844 | void AliDielectronBtoJPSItoEleCDFfitFCN::InitializeFunctions(Int_t ptSize, Int_t massSize){ | |
845 | // | |
846 | // initialize pointers to save functions for the multivariate fit | |
847 | // | |
848 | fFunBSaved = new TF1**[ptSize]; | |
849 | for(int kpt=0; kpt<ptSize; kpt++) fFunBSaved[kpt] = new TF1*[3]; // type | |
850 | fFunBkgSaved = new TF1***[ptSize]; | |
851 | for(int kpt=0; kpt<ptSize; kpt++){ fFunBkgSaved[kpt] = new TF1**[massSize]; | |
852 | for(int ks = 0; ks<massSize; ks++) fFunBkgSaved[kpt][ks] = new TF1*[3]; | |
853 | for(int kk=0; kk<3;kk++) { | |
854 | fFunBSaved[kpt][kk] = new TF1(); | |
855 | for(int kk1=0; kk1<massSize;kk1++){ | |
856 | fFunBkgSaved[kpt][kk1][kk] = new TF1(); | |
857 | } | |
858 | } | |
859 | } | |
860 | ||
861 | // to extrapolate the function under the signal region | |
862 | fWeights = new Double_t**[massSize - 1]; // mass | |
863 | for(int km =0; km < (massSize - 1); km++) {fWeights[km] = new Double_t*[ptSize]; | |
864 | for(int kpt =0; kpt<ptSize; kpt++) fWeights[km][kpt] = new Double_t[3]; | |
865 | } // pt | |
866 | return; | |
867 | } | |
868 | ||
869 | //_________________________________________________________________________________________________ | |
870 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::FunBsaved(Double_t x, Double_t pt, Int_t type) const | |
871 | { | |
872 | // | |
873 | // functions to describe non-prompt J/psi x distributions | |
874 | // | |
875 | Double_t returnvalue = 0.; | |
876 | Int_t binPt = -1; | |
877 | for(int j=0; j<fPtWindows->GetSize()-1; j++) {if(fPtWindows->At(j)<pt && pt<fPtWindows->At(j+1)) binPt = j;} | |
878 | returnvalue = fFunBSaved[binPt][type]->Eval(x); | |
879 | return returnvalue; | |
880 | } | |
881 | ||
882 | //________________________________________________________________________________________________ | |
883 | void AliDielectronBtoJPSItoEleCDFfitFCN::SetFunctionsSaved(Int_t npxFunB, Int_t npxFunBkg, Double_t funBLimits, Double_t funBkgLimits, Int_t signalRegion){ | |
884 | // | |
885 | // save functions for the multivariate fit | |
886 | // | |
887 | if(!fMultivariate) | |
888 | {AliInfo("Warning: fMultivariate is kFALSE! Functions are not saved! \n"); return;} | |
889 | SetExtrapolationRegion(signalRegion); | |
890 | ||
891 | for(int tp=0;tp<3;tp++) // type | |
892 | { | |
893 | // pt | |
894 | for(int pt=0; pt<fPtWindows->GetSize()-1;pt++){ | |
895 | if(fResParams) SetResolutionConstants(fResParams[pt][tp],tp); | |
896 | SetFunBFunction(tp,pt,GetFunB(-1.*funBLimits,funBLimits,1.,(fPtWindows->At(pt) + (fPtWindows->At(pt+1)-fPtWindows->At(pt))/2.),tp,npxFunB)); | |
897 | } | |
898 | } | |
899 | ||
900 | AliInfo("+++++++ Pseudoproper-decay-length function for secondary J/psi saved ++++++ \n"); | |
901 | ||
902 | if(!fLoadFunctions){ | |
903 | for(int ij = 0; ij<fMassWindows->GetSize()-1;ij++){ | |
904 | if(ij == signalRegion) continue; | |
905 | ||
906 | Int_t mbin = (ij > signalRegion) ? ij-1 : ij; | |
907 | for(int tp=0;tp<3;tp++) { | |
908 | for(int pt =0; pt<fPtWindows->GetSize()-1; pt++){ | |
909 | if(fBkgParams) SetBackgroundSpecificParameters(pt,mbin,tp); | |
910 | SetBkgFunction(ij, tp, pt, GetEvaluateCDFDecayTimeBkgDistr(-1.*funBkgLimits,funBkgLimits,1.,tp,(fMassWindows->At(ij) + (fMassWindows->At(ij+1)-fMassWindows->At(ij))/2.),(fPtWindows->At(pt) + (fPtWindows->At(pt+1)-fPtWindows->At(pt))/2.),npxFunBkg)); | |
911 | ||
912 | } | |
913 | ||
914 | } | |
915 | ||
916 | } | |
917 | AliInfo("+++++++ Pseudoproper-decay-length function for background saved +++++++++++ \n"); | |
918 | ||
919 | } // loadFunctions | |
920 | // evaluate under signal | |
921 | for(int tp=0;tp<3;tp++) | |
922 | { | |
923 | for(int pt =0; pt<fPtWindows->GetSize()-1; pt++){ | |
924 | SetBkgFunction(signalRegion, tp, pt, GetEvaluateCDFDecayTimeBkgDistr(-1.*funBkgLimits,funBkgLimits,1.,tp,(fMassWindows->At(signalRegion) + (fMassWindows->At(signalRegion+1)-fMassWindows->At(signalRegion))/2.),(fPtWindows->At(pt) + (fPtWindows->At(pt+1)-fPtWindows->At(pt))/2.),npxFunBkg)); | |
925 | } | |
926 | ||
927 | } | |
928 | // save functions | |
929 | TFile func("functions.root","RECREATE"); | |
930 | for(int kpt =0; kpt<fPtWindows->GetSize()-1; kpt++){ | |
931 | for(int ss=0; ss<3;ss++) {fFunBSaved[kpt][ss]->Write(); | |
932 | for(int kk=0; kk<fMassWindows->GetSize()-1; kk++) fFunBkgSaved[kpt][kk][ss]->Write();}} | |
933 | return; | |
934 | } | |
935 | ||
936 | //_________________________________________________________________________________________________ | |
937 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFDecayTimeBkgDistrDifferential(Double_t x, Int_t type, Double_t m, Double_t pt) const | |
938 | { | |
939 | // | |
940 | // it returns the value of the probability to have a given x for the background | |
941 | // in the pt, m , type correspondent range | |
942 | // | |
943 | Int_t binPt = -1; | |
944 | for(int j=0; j<fPtWindows->GetSize()-1; j++) | |
945 | {if(fPtWindows->At(j)<pt && pt<fPtWindows->At(j+1)) binPt = j;} | |
946 | Bool_t isSignal = (fMassWindows->At(fSignalBinForExtrapolation)<m && m<fMassWindows->At(fSignalBinForExtrapolation+1)); | |
947 | Double_t ret = 0.; | |
948 | if(!isSignal) | |
949 | ret = fParameters[0]/(fParameters[0]+fParameters[1]+fParameters[2]+fParameters[3]+fParameters[46])*ResolutionFunc(x, pt, type) + fParameters[1]/(fParameters[0]+fParameters[1]+fParameters[2]+fParameters[3]+fParameters[46])*FunBkgPos(x, pt,type) + fParameters[2]/(fParameters[0]+fParameters[1]+fParameters[2]+fParameters[3]+fParameters[46])*FunBkgNeg(x,pt,type) + fParameters[3]/(fParameters[0]+fParameters[1]+fParameters[2]+fParameters[3]+fParameters[46])*FunBkgSym(x, pt,type) + fParameters[46]/(fParameters[0]+fParameters[1]+fParameters[2]+fParameters[3]+fParameters[46])*FunBkgSym1(x,pt,type); | |
950 | else{ | |
951 | for(int k=0; k<fMassWindows->GetSize()-2;k++) { | |
952 | Int_t mbin = (k > (fSignalBinForExtrapolation-1)) ? k+1 : k; | |
953 | ret += fWeights[k][binPt][type]*EvaluateCDFDecayTimeBkgDistrSaved(x,type,(fMassWindows->At(mbin) + (fMassWindows->At(mbin+1)-fMassWindows->At(mbin))/2.),pt);} | |
954 | ||
955 | } | |
956 | return ret; | |
957 | } | |
958 | ||
959 | //_________________________________________________________________________________________________ | |
960 | Double_t AliDielectronBtoJPSItoEleCDFfitFCN::EvaluateCDFDecayTimeBkgDistrSaved(Double_t x, Int_t type, Double_t m, Double_t pt) const | |
961 | { | |
962 | // | |
963 | // it returns the value of the probability to have a given x for the background | |
964 | // in the pt, m , type correspondent range | |
965 | // | |
966 | Double_t returnvalue = 0.; | |
967 | Int_t binM = -1.; | |
968 | for(int j=0; j<fMassWindows->GetSize()-1; j++) {if(fMassWindows->At(j)<m && m<fMassWindows->At(j+1)) binM = j;} | |
969 | Int_t binPt = -1; | |
970 | for(int j=0; j<fPtWindows->GetSize()-1; j++) {if(fPtWindows->At(j)<pt && pt<fPtWindows->At(j+1)) binPt = j;} | |
971 | returnvalue = fFunBkgSaved[binPt][binM][type]->Eval(x); | |
972 | return returnvalue; | |
973 | } | |
5720c765 | 974 |