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c04c80e6 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | // * 20/04/2010 * | |
16 | // Class for optimising and applying V0 cuts to obtain clean V0 samples | |
17 | // Compatible with ESDs only | |
18 | // | |
19 | // Authors: | |
20 | // Matus Kalisky <matus.kalisky@cern.ch> | |
21 | // | |
22 | ||
23 | #include "TDatabasePDG.h" | |
24 | ||
25 | #include "AliESDtrack.h" | |
26 | #include "AliMCEvent.h" | |
27 | #include "AliESDv0.h" | |
28 | #include "AliKFParticle.h" | |
29 | #include "AliKFVertex.h" | |
3a72645a | 30 | #include "AliLog.h" |
e97c2edf | 31 | #include "AliExternalTrackParam.h" |
c04c80e6 | 32 | |
c04c80e6 | 33 | #include "AliHFEV0cuts.h" |
34 | ||
35 | ClassImp(AliHFEV0cuts) | |
36 | ||
37 | //________________________________________________________________ | |
38 | AliHFEV0cuts::AliHFEV0cuts(): | |
39 | fQA(NULL) | |
3a72645a | 40 | , fQAmc(NULL) |
c04c80e6 | 41 | , fMCEvent(NULL) |
42 | , fInputEvent(NULL) | |
43 | , fPrimaryVertex(NULL) | |
3a72645a | 44 | , fCurrentV0id(0) |
45 | , fPdaughterPDG(0) | |
46 | , fNdaughterPDG(0) | |
e156c3bb | 47 | , fDestBits(0) |
c04c80e6 | 48 | { |
49 | ||
50 | // | |
51 | // Default constructor | |
52 | // | |
53 | ||
54 | ||
55 | } | |
56 | //________________________________________________________________ | |
57 | AliHFEV0cuts::~AliHFEV0cuts() | |
58 | { | |
59 | // | |
60 | // destructor | |
61 | // | |
e156c3bb | 62 | |
63 | if (fQA && TESTBIT(fDestBits, kBitQA)) delete fQA; | |
64 | if (fQAmc && TESTBIT(fDestBits, kBitQAmc)) delete fQAmc; | |
c04c80e6 | 65 | } |
66 | ||
67 | //________________________________________________________________ | |
68 | AliHFEV0cuts::AliHFEV0cuts(const AliHFEV0cuts &ref): | |
69 | TObject(ref) | |
70 | , fQA(NULL) | |
3a72645a | 71 | , fQAmc(NULL) |
c04c80e6 | 72 | , fMCEvent(NULL) |
73 | , fInputEvent(NULL) | |
74 | , fPrimaryVertex(NULL) | |
3a72645a | 75 | , fCurrentV0id(0) |
76 | , fPdaughterPDG(0) | |
77 | , fNdaughterPDG(0) | |
e156c3bb | 78 | , fDestBits(0) |
c04c80e6 | 79 | { |
80 | // | |
81 | // Copy constructor | |
82 | // | |
83 | ref.Copy(*this); | |
84 | } | |
85 | //________________________________________________________________ | |
86 | AliHFEV0cuts &AliHFEV0cuts::operator=(const AliHFEV0cuts &ref){ | |
87 | // | |
88 | // Assignment operator | |
89 | // | |
90 | if(this != &ref) | |
91 | ref.Copy(*this); | |
92 | return *this; | |
93 | } | |
94 | //________________________________________________________________ | |
95 | void AliHFEV0cuts::Copy(TObject &ref) const{ | |
96 | // | |
97 | // Copy function | |
98 | // | |
99 | AliHFEV0cuts &target = dynamic_cast<AliHFEV0cuts &>(ref); | |
100 | ||
101 | if(fQA) target.fQA = dynamic_cast<AliHFEcollection *>(fQA->Clone()); | |
102 | ||
3a72645a | 103 | if(fQAmc) target.fQAmc = dynamic_cast<AliHFEcollection *>(fQAmc->Clone()); |
104 | ||
c04c80e6 | 105 | if(target.fMCEvent) delete target.fMCEvent; |
106 | target.fMCEvent = new AliMCEvent; | |
107 | ||
108 | if(target.fPrimaryVertex) delete target.fPrimaryVertex; | |
109 | target.fPrimaryVertex = new AliKFVertex; | |
110 | ||
111 | TObject::Copy(ref); | |
112 | ||
113 | } | |
114 | //___________________________________________________________________ | |
115 | void AliHFEV0cuts::Init(const char* name){ | |
116 | // | |
117 | // initialize the output objects and create histograms | |
118 | // | |
119 | ||
120 | // | |
121 | // all the "h_cut_XXX" histograms hare cut value distributions: | |
122 | // [0] for all candidates | |
123 | // [1] jus before the cut on given variable was applied, but after all the previous cuts | |
124 | // | |
125 | ||
e156c3bb | 126 | memset(&fDestBits, 0, sizeof(UInt_t)); |
127 | // now set the first two bits to 1 | |
128 | SETBIT(fDestBits, kBitQA); | |
129 | SETBIT(fDestBits, kBitQAmc); | |
130 | ||
131 | ||
c04c80e6 | 132 | fQA = new AliHFEcollection("fQA", name); |
133 | ||
3a72645a | 134 | fQAmc = new AliHFEcollection("fQAmc", name); |
c04c80e6 | 135 | |
136 | // common for all V0s | |
137 | fQA->CreateTH2Fvector1(2, "h_all_AP", "armenteros plot for all V0 candidates", 200, -1, 1, 200, 0, 0.25); | |
138 | ||
139 | // gammas | |
140 | fQA->CreateTH1Fvector1(2, "h_cut_Gamma_CosPoint", "Gamma Cosine pointing angle; cos point. angle; counts", 100, 0, 0.1); | |
141 | fQA->CreateTH1Fvector1(2, "h_cut_Gamma_DCA", "DCA between the gamma daughters; dca (cm); counts", 100, 0, 2); | |
3a72645a | 142 | fQA->CreateTH1Fvector1(2, "h_cut_Gamma_VtxR_old", "*old* Radius of the gamma conversion vertex; r (cm); counts", 1000, 0, 100); |
c04c80e6 | 143 | fQA->CreateTH1Fvector1(2, "h_cut_Gamma_VtxR", "Radius of the gamma conversion vertex; r (cm); counts", 1000, 0, 100); |
c04c80e6 | 144 | fQA->CreateTH1Fvector1(2, "h_cut_Gamma_PP", "gamma psi pair angle; psi pairangle (rad); counts", 100, 0, 2); |
3a72645a | 145 | fQA->CreateTH1Fvector1(2, "h_cut_Gamma_Chi2", "gamma Chi2/NDF; Chi2/NDF; counts", 100, 0, 50); |
c2690925 | 146 | fQA->CreateTH1Fvector1(2, "h_cut_Gamma_Sep", "gamma separation dist at TPC inned wall", 100, 0, 10); |
3a72645a | 147 | fQA->CreateTH1Fvector1(7, "h_Gamma_Mass", "Invariant mass of gammas; mass (GeV/c^{2}); counts", 100, 0, 0.2); |
e97c2edf | 148 | |
c04c80e6 | 149 | |
150 | // kaons | |
151 | fQA->CreateTH1Fvector1(2, "h_cut_K0_CosPoint", "K0 Cosine pointing angle; cos point. angle; counts", 100, 0, 0.1); | |
152 | fQA->CreateTH1Fvector1(2, "h_cut_K0_DCA", "DCA between the K0 daughters; dca (cm); counts", 100, 0, 2); | |
153 | fQA->CreateTH1Fvector1(2, "h_cut_K0_VtxR", "Radius of the K0 decay vertex; r (cm); counts", 1000, 0, 100); | |
3a72645a | 154 | fQA->CreateTH1Fvector1(2, "h_cut_K0_Chi2", "K0 Chi2/NDF; Chi2/NDF; counts", 100, 0, 50); |
155 | fQA->CreateTH1Fvector1(5, "h_K0_Mass", "Invariant mass of K0; mass (GeV/c^{2}); counts", 125, 0.45, 0.55); | |
c04c80e6 | 156 | |
157 | // lambda | |
158 | fQA->CreateTH1Fvector1(2, "h_cut_L_CosPoint", "L Cosine pointing angle; cos point. angle; counts", 100, 0, 0.1); | |
159 | fQA->CreateTH1Fvector1(2, "h_cut_L_DCA", "DCA between the L daughters; dca (cm); counts", 100, 0, 2); | |
160 | fQA->CreateTH1Fvector1(2, "h_cut_L_VtxR", "Radius of the L decay vertex; r (cm); counts", 1000, 0, 100); | |
3a72645a | 161 | fQA->CreateTH1Fvector1(2, "h_cut_L_Chi2", "L Chi2/NDF; Chi2/NDF; counts", 100, 0, 50); |
162 | fQA->CreateTH1Fvector1(5, "h_L_Mass", "Invariant mass of L; mass (GeV/c^{2}); counts", 60, 1.1, 1.13); | |
163 | fQA->CreateTH1Fvector1(5, "h_AL_Mass", "Invariant mass of anti L; mass (GeV/c^{2}); counts", 60, 1.1, 1.13); | |
c04c80e6 | 164 | |
165 | fQA->CreateTH2F("h_L_checks", "Lambda candidate check[0] -v- check[1]; check[0]; check[1]", 5, -0.75, 1.75, 6, -0.75, 1.75 ); | |
166 | ||
167 | // electrons | |
e97c2edf | 168 | fQA->CreateTH1Fvector1(7, "h_Electron_P", "Momenta of conversion electrons -cuts-; P (GeV/c); counts", 50, 0.1, 20, 0); |
c04c80e6 | 169 | |
170 | // K0 pions | |
171 | fQA->CreateTH1Fvector1(8, "h_PionK0_P", "Momenta of K0 pions -cuts-; P (GeV/c) counts;", 50, 0.1, 20, 0); | |
172 | ||
173 | // L pions | |
3a72645a | 174 | fQA->CreateTH1Fvector1(9, "h_PionL_P", "Momenta of L pions -cuts-; P (GeV/c) counts;", 50, 0.1, 20, 0); |
c04c80e6 | 175 | |
176 | // L protons | |
177 | fQA->CreateTH1Fvector1(9, "h_ProtonL_P", "Momenta of L protons -cuts-; P (GeV/c) counts;", 50, 0.1, 20, 0); | |
178 | ||
179 | // single track cuts | |
180 | fQA->CreateTH1F("h_ST_NclsTPC", "Number of TPC clusters", 161, -1, 160); | |
181 | fQA->CreateTH1F("h_ST_TPCrefit", "TPC refit", 2, -0.5, 1.5); | |
182 | fQA->CreateTH1F("h_ST_chi2TPCcls", "chi2 per TPC cluster", 100, 0, 10); | |
183 | fQA->CreateTH1F("h_ST_TPCclsR", "TPC cluster ratio", 120, -0.1, 1.1); | |
184 | fQA->CreateTH1F("h_ST_kinks", "kinks", 2, -0.5, 1.5); | |
185 | fQA->CreateTH1F("h_ST_pt", "track pt", 100, 0.1, 20, 0); | |
186 | fQA->CreateTH1F("h_ST_eta", "track eta", 100, -1.5, 1.5); | |
187 | ||
188 | // | |
189 | // possibly new cuts | |
190 | // | |
e97c2edf | 191 | fQA->CreateTH2Fvector1(2, "h_cut_L_rdp_v_mp", "relative L daughter mom -v- mother mom; L mom (GeV/c); relative daughter mom p2/p1", 100, 0.1, 10, 100, 0, 1); |
c04c80e6 | 192 | |
193 | // THnSparse histograms | |
194 | ||
195 | // THnSparse for the K0 mass | |
196 | // to be looked at after merging run by run | |
197 | // axes: mass, pt, theta, phi | |
198 | { | |
199 | Int_t nBin[4] = {100, 10, 10, 18}; | |
200 | Double_t nMin[4] = {0.45, 0.1, 0., 0.}; | |
201 | Double_t nMax[4] = {0.55, 10., TMath::Pi(), 2*TMath::Pi()}; | |
202 | TString htitle = "K0 sparse; mass (GeV/c^{2}); p_{T} (GeV/c); theta (rad); phi(rad)"; | |
203 | fQA->CreateTHnSparse("hK0", htitle, 4, nBin, nMin, nMax); | |
204 | fQA->BinLogAxis("hK0", 1); | |
205 | } | |
206 | ||
3a72645a | 207 | |
208 | // | |
209 | // MC plots for checking and tuning the V0 cuts | |
210 | // | |
211 | ||
212 | const char *v0[4] = {"G", "K", "L"}; // to keep the names short | |
213 | // number of V0s left after each cut step - for signal and background - within given mass window | |
214 | for(Int_t i=0; i<3; ++i){ | |
215 | fQAmc->CreateTH1F(Form("h_%s_cuts_S", v0[i]), Form("h_%s_cuts_S", v0[i]), 10, -0.5, 9.5); | |
216 | fQAmc->CreateTH1F(Form("h_%s_cuts_B", v0[i]), Form("h_%s_cuts_B", v0[i]), 10, -0.5, 9.5); | |
217 | } | |
218 | ||
219 | // | |
220 | // cut distributions for signal and background | |
221 | // | |
222 | ||
223 | const Float_t pMin = 0.1; | |
224 | const Float_t pMax = 10.; | |
225 | const Int_t pN = 12; | |
226 | ||
227 | ||
228 | // gamma signal | |
229 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_CosPoint_S", "S - Gamma Cosine pointing angle; mom (GeV/c); cos point. angle", pN, pMin, pMax, 50, 0, 0.1, 0); | |
230 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_DCA_S", "S - DCA between the gamma daughters; mom (GeV/c); dca (cm)", pN, pMin, pMax, 50, 0, 2, 0); | |
231 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_VtxR_S", "S - Radius of the gamma conversion vertex; mom (GeV/c); r (cm)", pN, pMin, pMax, 100, 0, 100, 0); | |
3a72645a | 232 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_PP_S", "S - gamma psi pair angle; mom (GeV/c); psi pairangle (rad)", pN, pMin, pMax, 50, 0, 0.5, 0); |
c2690925 | 233 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_Chi2_S", "S - gamma Chi2/NDF; mom (GeV/c); Chi2/NDF", pN, pMin, pMax, 50, 0, 25, 0); |
234 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_Sep_S", "S - gamma separation TPC-inner; mom (GeV/c); tracks separatin (cm)", pN, pMin, pMax, 100, 0, 10, 0); | |
235 | // as a function of radius, not momentum | |
236 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_SepR_S", "S - gamma separation TPC-inner; radius cm; tracks separatin (cm)", 20, 0, 100, 100, 0, 20); | |
3a72645a | 237 | |
e97c2edf | 238 | fQAmc->CreateTH1Fvector1(9, "h_Gamma_Mass_S", "S - Invariant mass of gammas; mass (GeV/c^{2}); counts", 100, 0, 0.2); |
3a72645a | 239 | // gamma background |
240 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_CosPoint_B", "B - Gamma Cosine pointing angle; mom (GeV/c); cos point. angle", pN, pMin, pMax, 50, 0, 0.1, 0); | |
241 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_DCA_B", "B - DCA between the gamma daughters; mom (GeV/c); dca (cm)", pN, pMin, pMax, 50, 0, 2, 0); | |
242 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_VtxR_B", "B - Radius of the gamma conversion vertex; mom (GeV/c); r (cm)", pN, pMin, pMax, 100, 0, 100, 0); | |
3a72645a | 243 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_PP_B", "B - gamma psi pair angle; mom (GeV/c); psi pairangle (rad)", pN, pMin, pMax, 50, 0, 0.5, 0); |
c2690925 | 244 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_Chi2_B", "B - gamma Chi2/NDF; mom (GeV/c); Chi2/NDF", pN, pMin, pMax, 50, 0, 25, 0); |
e97c2edf | 245 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_Sep_B", "B - gamma separation TPC-inner; mom (GeV/c); tracks separatin (cm)", pN, pMin, pMax, 100, 0, 50, 0); |
c2690925 | 246 | // |
247 | fQAmc->CreateTH2Fvector1(2, "h_cut_Gamma_SepR_B", "S - gamma separation TPC-inner; radius cm; tracks separatin (cm)", 20, 0, 100, 100, 0, 20); | |
e97c2edf | 248 | fQAmc->CreateTH1Fvector1(9, "h_Gamma_Mass_B", "B - Invariant mass of gammas; mass (GeV/c^{2}); counts", 100, 0, 0.2); |
3a72645a | 249 | |
250 | // kaons signal | |
251 | fQAmc->CreateTH2Fvector1(2, "h_cut_K0_CosPoint_S", "S - K0 Cosine pointing angle; mom (GeV/c); cos point. angle", pN, pMin, pMax, 50, 0, 0.1, 0); | |
252 | fQAmc->CreateTH2Fvector1(2, "h_cut_K0_DCA_S", "S - DCA between the K0 daughters; mom (GeV/c); dca (cm)", pN, pMin, pMax, 50, 0, 2, 0); | |
253 | fQAmc->CreateTH2Fvector1(2, "h_cut_K0_VtxR_S", "S - Radius of the K0 decay vertex; mom (GeV/c); r (cm)", pN, pMin, pMax, 50, 0, 100, 0); | |
c2690925 | 254 | fQAmc->CreateTH2Fvector1(2, "h_cut_K0_Chi2_S", "S - K0 Chi2/NDF; mom (GeV/c); Chi2/NDF", pN, pMin, pMax, 50, 0, 25, 0); |
3a72645a | 255 | |
256 | fQAmc->CreateTH1Fvector1(5, "h_K0_Mass_S", "S - Invariant mass of K0; mass (GeV/c^{2}); counts", 125, 0.45, 0.55); | |
257 | // kaons background | |
258 | fQAmc->CreateTH2Fvector1(2, "h_cut_K0_CosPoint_B", "B - K0 Cosine pointing angle; mom (GeV/c); cos point. angle", pN, pMin, pMax, 50, 0, 0.1, 0); | |
259 | fQAmc->CreateTH2Fvector1(2, "h_cut_K0_DCA_B", "B - DCA between the K0 daughters; mom (GeV/c); dca (cm)", pN, pMin, pMax, 50, 0, 2, 0); | |
260 | fQAmc->CreateTH2Fvector1(2, "h_cut_K0_VtxR_B", "B - Radius of the K0 decay vertex; mom (GeV/c); r (cm)", pN, pMin, pMax, 50, 0, 100, 0); | |
c2690925 | 261 | fQAmc->CreateTH2Fvector1(2, "h_cut_K0_Chi2_B", "B - K0 Chi2/NDF; mom (GeV/c); Chi2/NDF", pN, pMin, pMax, 50, 0, 50, 0); |
3a72645a | 262 | |
263 | fQAmc->CreateTH1Fvector1(5, "h_K0_Mass_B", "B - Invariant mass of K0; mass (GeV/c^{2}); counts", 125, 0.45, 0.55); | |
264 | ||
265 | // lambda signal | |
266 | fQAmc->CreateTH2Fvector1(2, "h_cut_L_CosPoint_S", "S - L Cosine pointing angle; mom (GeV/c); cos point. angle", pN, pMin, pMax, 50, 0, 0.1, 0); | |
267 | fQAmc->CreateTH2Fvector1(2, "h_cut_L_DCA_S", "S - DCA between the L daughters; mom (GeV/c); dca (cm)", pN, pMin, pMax, 50, 0, 2, 0); | |
268 | fQAmc->CreateTH2Fvector1(2, "h_cut_L_VtxR_S", "S - Radius of the L decay vertex; mom (GeV/c); r (cm)", pN, pMin, pMax, 50, 0, 100, 0); | |
c2690925 | 269 | fQAmc->CreateTH2Fvector1(2, "h_cut_L_Chi2_S", "S - L Chi2/NDF; mom (GeV/c); Chi2/NDF", pN, pMin, pMax, 50, 0, 50, 0); |
3a72645a | 270 | |
271 | fQAmc->CreateTH1Fvector1(5, "h_L_Mass_S", "S - Invariant mass of L; mass (GeV/c^{2}); counts", 60, 1.1, 1.13); | |
272 | fQAmc->CreateTH1Fvector1(5, "h_AL_Mass_S", "S - Invariant mass of anti L; mass (GeV/c^{2}); counts", 60, 1.1, 1.13); | |
273 | // lambda background | |
274 | fQAmc->CreateTH2Fvector1(2, "h_cut_L_CosPoint_B", "B - L Cosine pointing angle; mom (GeV/c); cos point. angle", pN, pMin, pMax, 50, 0, 0.1, 0); | |
275 | fQAmc->CreateTH2Fvector1(2, "h_cut_L_DCA_B", "B - DCA between the L daughters; mom (GeV/c); dca (cm)", pN, pMin, pMax, 50, 0, 2, 0); | |
276 | fQAmc->CreateTH2Fvector1(2, "h_cut_L_VtxR_B", "B - Radius of the L decay vertex; mom (GeV/c); r (cm)", pN, pMin, pMax, 50, 0, 100, 0); | |
c2690925 | 277 | fQAmc->CreateTH2Fvector1(2, "h_cut_L_Chi2_B", "B - L Chi2/NDF; mom (GeV/c); Chi2/NDF", pN, pMin, pMax, 50, 0, 50, 0); |
3a72645a | 278 | fQAmc->CreateTH2Fvector1(2, "h_cut_L_rdp_v_mp_S", "S - relative L daughter mom -v- mother mom; L mom (GeV/c); relative daughter mom p2/p1", 100, 0.1, 10, 100, 0, 1); |
279 | fQAmc->CreateTH2Fvector1(2, "h_cut_L_rdp_v_mp_B", "B - relative L daughter mom -v- mother mom; L mom (GeV/c); relative daughter mom p2/p1", 100, 0.1, 10, 100, 0, 1); | |
280 | fQAmc->CreateTH1Fvector1(5, "h_LAL_Mass_B", "B - Invariant mass of anti L; mass (GeV/c^{2}); counts", 60, 1.1, 1.13); | |
281 | ||
282 | ||
283 | // MC tagged daughter track momentum distribution after each cut step | |
284 | // fQAmc->CreateTH1Fvector1(10, "h_electron_p_S", "h_electron_p_S", 20, 0.1, 20, 0); | |
285 | // fQAmc->CreateTH1Fvector1(10, "h_K0pion_p_S", "h_K0pion_p_S", 20, 0.1, 20, 0); | |
286 | // fQAmc->CreateTH1Fvector1(10, "h_Lpion_p_S", "h_Lpion_p_S", 20, 0.1, 20, 0); | |
287 | // fQAmc->CreateTH1Fvector1(10, "h_proton_p_S", "h_proton_p_S", 20, 0.1, 20, 0); | |
288 | ||
289 | // V0 momnetum distribution of MC tagged signal and backglound after all cuts | |
290 | fQAmc->CreateTH1F("h_gamma_p_S", "true gammas after all cuts", 20, 0.1, 10, 0); | |
291 | fQAmc->CreateTH1F("h_gamma_p_B", "true gamma BG after all cuts", 20, 0.1, 10, 0); | |
292 | fQAmc->CreateTH1F("h_K0_p_S", "true K0s after all cuts", 20, 0.1, 10, 0); | |
293 | fQAmc->CreateTH1F("h_K0_p_B", "true K0 BG after all cuts", 20, 0.1, 10, 0); | |
294 | fQAmc->CreateTH1F("h_lambda_p_S", "MC true lambdas after all cuts", 20, 0.1, 10, 0); | |
295 | fQAmc->CreateTH1F("h_lambda_p_B", "MC true lambda BG after all cuts", 20, 0.1, 10, 0); | |
296 | fQAmc->CreateTH1F("h_alambda_p_S", "MC true anti-lambdas after all cuts", 20, 0.1, 10, 0); | |
297 | fQAmc->CreateTH1F("h_alambda_p_B", "MC true anti-lambda BG after all cuts", 20, 0.1, 10, 0); | |
298 | ||
299 | // invariant mass ditributions for the V0 for different hypoteses (gamma, K0, L, AL) | |
300 | fQAmc->CreateTH1F("h_Mass_gamma_as_K0","h_Mass_gamma_as_K0", 200, 0, 2); | |
301 | fQAmc->CreateTH1F("h_Mass_gamma_as_L","h_Mass_gamma_as_L", 200, 0, 2); | |
302 | fQAmc->CreateTH1F("h_Mass_K0_as_G", "h_Mass_K0_as_gamma", 200, 0, 2); | |
303 | fQAmc->CreateTH1F("h_Mass_K0_as_L", "h_Mass_K0_as_Lambda", 200, 0, 2); | |
304 | fQAmc->CreateTH1F("h_Mass_L_as_G", "h_Mass_L_as_gamma", 200, 0, 2); | |
305 | fQAmc->CreateTH1F("h_Mass_L_as_K0", "h_Mass_L_as_K0", 200, 0, 2); | |
306 | ||
307 | // Invariant mass distribution of MC tagged signal for diffrent momenta | |
308 | fQAmc->CreateTH2F("h_gamma_MvP_S", "mc tagged gammas - signal; p (GeV/c); m (GeV/c^{2})", 12, 0.1, 20, 100, 0., 0.1, 0); | |
309 | fQAmc->CreateTH2F("h_K0_MvP_S", "mc tagged K0s - signal; p (GeV/c); m (GeV/c^{2})", 12, 0.1, 20, 100, 0.45, 0.55, 0); | |
310 | fQAmc->CreateTH2F("h_lambda_MvP_S", "mc tagged Lambdas - signal; p (GeV/c); m (GeV/c^{2})", 12, 0.1, 20, 100, 1.08, 1.14, 0); | |
311 | ||
312 | // electrons | |
313 | fQAmc->CreateTH1Fvector1(8, "h_Electron_P_S", "MC-S momenta of conversion electrons -cuts-; P (GeV/c); counts", 20, 0.1, 20, 0); | |
314 | fQAmc->CreateTH1Fvector1(8, "h_Electron_P_B", "MC-B momenta of conversion electrons -cuts-; P (GeV/c); counts", 20, 0.1, 20, 0); | |
315 | ||
316 | // K0 pions | |
317 | fQAmc->CreateTH1Fvector1(7, "h_PionK0_P_S", "MC-S momenta of K0 pions -cuts-; P (GeV/c) counts;", 20, 0.1, 20, 0); | |
318 | fQAmc->CreateTH1Fvector1(7, "h_PionK0_P_B", "MC-B momenta of K0 pions -cuts-; P (GeV/c) counts;", 20, 0.1, 20, 0); | |
319 | ||
320 | // L pions | |
321 | fQAmc->CreateTH1Fvector1(8, "h_PionL_P_S", "MC-S momenta of L pions -cuts-; P (GeV/c) counts;", 20, 0.1, 50, 0); | |
322 | fQAmc->CreateTH1Fvector1(8, "h_PionL_P_B", "MC-B momenta of L pions -cuts-; P (GeV/c) counts;", 20, 0.1, 50, 0); | |
323 | ||
324 | // L protons | |
325 | fQAmc->CreateTH1Fvector1(8, "h_ProtonL_P_S", "MC-S momenta of L protons -cuts-; P (GeV/c) counts;", 20, 0.1, 20, 0); | |
326 | fQAmc->CreateTH1Fvector1(8, "h_ProtonL_P_B", "MC-B momenta of L protons -cuts-; P (GeV/c) counts;", 20, 0.1, 20, 0); | |
327 | ||
328 | ||
329 | ||
330 | // cut efficiencies | |
c04c80e6 | 331 | } |
332 | //________________________________________________________________ | |
333 | Bool_t AliHFEV0cuts::TrackCutsCommon(AliESDtrack* track){ | |
334 | // | |
335 | // singe track cuts commom for all particle candidates | |
336 | // | |
337 | ||
338 | if(!track) return kFALSE; | |
3a72645a | 339 | |
c04c80e6 | 340 | |
341 | // status word | |
342 | ULong_t status = track->GetStatus(); | |
343 | ||
344 | ||
345 | // No. of TPC clusters | |
346 | fQA->Fill("h_ST_NclsTPC", track->GetTPCNcls()); | |
e97c2edf | 347 | if(track->GetTPCNcls() < 1) return kFALSE; // |
c04c80e6 | 348 | |
349 | // TPC refit | |
350 | if((status & AliESDtrack::kTPCrefit)){ | |
351 | fQA->Fill("h_ST_TPCrefit", 1); | |
352 | } | |
353 | if(!(status & AliESDtrack::kTPCrefit)){ | |
354 | fQA->Fill("h_ST_TPCrefit", 0); | |
355 | return kFALSE; | |
356 | } | |
357 | ||
358 | // Chi2 per TPC cluster | |
359 | Int_t nTPCclusters = track->GetTPCclusters(0); | |
360 | Float_t chi2perTPCcluster = track->GetTPCchi2()/Float_t(nTPCclusters); | |
361 | fQA->Fill("h_ST_chi2TPCcls", chi2perTPCcluster); | |
e97c2edf | 362 | if(chi2perTPCcluster > 4.0) return kFALSE; // 4.0 |
c04c80e6 | 363 | |
364 | // TPC cluster ratio | |
365 | Float_t cRatioTPC = track->GetTPCNclsF() > 0. ? static_cast<Float_t>(track->GetTPCNcls())/static_cast<Float_t> (track->GetTPCNclsF()) : 1.; | |
366 | fQA->Fill("h_ST_TPCclsR", cRatioTPC); | |
367 | if(cRatioTPC < 0.6) return kFALSE; | |
368 | ||
369 | // kinks | |
370 | fQA->Fill("h_ST_kinks", track->GetKinkIndex(0)); | |
371 | if(track->GetKinkIndex(0) != 0) return kFALSE; | |
372 | ||
373 | // pt | |
374 | fQA->Fill("h_ST_pt",track->Pt()); | |
e97c2edf | 375 | //if(track->Pt() < 0.1 || track->Pt() > 100) return kFALSE; // |
c04c80e6 | 376 | |
377 | // eta | |
378 | fQA->Fill("h_ST_eta", track->Eta()); | |
379 | //if(TMath::Abs(track->Eta()) > 0.9) return kFALSE; | |
380 | ||
381 | return kTRUE; | |
382 | } | |
383 | //________________________________________________________________ | |
384 | Bool_t AliHFEV0cuts::V0CutsCommon(AliESDv0 *v0){ | |
385 | // | |
386 | // V0 cuts common to all V0s | |
387 | // | |
3a72645a | 388 | |
c04c80e6 | 389 | AliESDtrack* dN, *dP; |
390 | ||
391 | dP = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(v0->GetPindex())); | |
392 | dN = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(v0->GetNindex())); | |
393 | ||
394 | if(!dN || !dP) return kFALSE; | |
395 | ||
396 | Int_t qP = dP->Charge(); | |
397 | Int_t qN = dN->Charge(); | |
398 | ||
399 | if((qP*qN) != -1) return kFALSE; | |
400 | ||
401 | return kTRUE; | |
402 | } | |
403 | //________________________________________________________________ | |
404 | Bool_t AliHFEV0cuts::GammaCuts(AliESDv0 *v0){ | |
405 | // | |
406 | // gamma cuts | |
407 | // | |
408 | ||
409 | if(!v0) return kFALSE; | |
410 | ||
3a72645a | 411 | if(fMCEvent){ |
412 | if(1 == fCurrentV0id){ | |
413 | fQAmc->Fill("h_Mass_gamma_as_K0", v0->GetEffMass(2, 2)); | |
414 | fQAmc->Fill("h_Mass_gamma_as_L", v0->GetEffMass(2, 4)); | |
415 | fQAmc->Fill("h_Mass_gamma_as_L", v0->GetEffMass(4, 2)); | |
416 | } | |
417 | } | |
418 | ||
c04c80e6 | 419 | AliVTrack* daughter[2]; |
420 | Int_t pIndex = 0, nIndex = 0; | |
421 | if(CheckSigns(v0)){ | |
422 | pIndex = v0->GetPindex(); | |
423 | nIndex = v0->GetNindex(); | |
424 | } | |
425 | else{ | |
426 | pIndex = v0->GetNindex(); | |
427 | nIndex = v0->GetPindex(); | |
428 | } | |
429 | daughter[0] = dynamic_cast<AliVTrack *>(fInputEvent->GetTrack(pIndex)); | |
430 | daughter[1] = dynamic_cast<AliVTrack *>(fInputEvent->GetTrack(nIndex)); | |
431 | if(!daughter[0] || !daughter[1]) return kFALSE; | |
432 | ||
433 | AliKFParticle *kfMother = CreateMotherParticle(daughter[0], daughter[1], TMath::Abs(kElectron), TMath::Abs(kElectron)); | |
434 | if(!kfMother) return kFALSE; | |
435 | ||
436 | // production vertex is set in the 'CreateMotherParticle' function | |
3a72645a | 437 | //kfMother->SetMassConstraint(0, 0.001); |
c04c80e6 | 438 | |
439 | AliESDtrack* d[2]; | |
440 | d[0] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(pIndex)); | |
441 | d[1] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(nIndex)); | |
442 | ||
443 | Float_t iMass = v0->GetEffMass(0, 0); | |
444 | Float_t iP = v0->P(); | |
445 | Float_t p[2] = {d[0]->GetP(), d[1]->GetP()}; | |
446 | ||
c04c80e6 | 447 | // Cut values |
c2690925 | 448 | const Double_t cutChi2NDF = 1.5; // ORG [7.] |
449 | const Double_t cutCosPoint[2] = {0., 0.007}; // ORG [0., 0.02] | |
c04c80e6 | 450 | const Double_t cutDCA[2] = {0., 0.25}; // ORG [0., 0.25] |
c2690925 | 451 | const Double_t cutProdVtxR[2] = {6., 90.}; // ORG [3., 90] |
c04c80e6 | 452 | const Double_t cutPsiPair[2] = {0., 0.05}; // ORG [0. 0.05] |
3a72645a | 453 | // mass cut |
c04c80e6 | 454 | const Double_t cutMass = 0.05; // ORG [0.05] |
e97c2edf | 455 | |
456 | // | |
457 | // possible new cuts | |
458 | // | |
459 | // separation cut at the entrance to the TPC | |
e156c3bb | 460 | const Double_t cutSeparation = 1.; // ORG 3.0 cm |
e97c2edf | 461 | |
462 | ||
463 | ||
c04c80e6 | 464 | // Values |
465 | ||
466 | // cos pointing angle | |
467 | Double_t cosPoint = v0->GetV0CosineOfPointingAngle(); | |
468 | cosPoint = TMath::ACos(cosPoint); | |
469 | ||
470 | // DCA between daughters | |
471 | Double_t dca = v0->GetDcaV0Daughters(); | |
472 | ||
473 | // Production vertex | |
474 | Double_t x, y, z; | |
475 | v0->GetXYZ(x,y,z); | |
476 | Double_t r = TMath::Sqrt(x*x + y*y); | |
477 | ||
3a72645a | 478 | Double_t xy[2]; |
479 | Double_t r2 = -1.; | |
480 | if ( GetConvPosXY(d[0], d[1], xy) ){ | |
481 | r2 = TMath::Sqrt(xy[0]*xy[0] + xy[1]*xy[1]); | |
482 | } | |
483 | ||
c04c80e6 | 484 | // psi pair |
485 | Double_t psiPair = PsiPair(v0); | |
486 | ||
487 | // V0 chi2/ndf | |
488 | Double_t chi2ndf = kfMother->GetChi2()/kfMother->GetNDF(); | |
c04c80e6 | 489 | if(kfMother) delete kfMother; |
e97c2edf | 490 | |
491 | // Separation | |
492 | AliExternalTrackParam const *param[2]; | |
493 | param[0] = d[0]->GetInnerParam(); | |
494 | param[1] = d[1]->GetInnerParam(); | |
495 | Double_t sep = 999.; | |
496 | if(param[0] && param[1]){ | |
497 | TVector3 xyz[3]; | |
498 | xyz[0].SetXYZ(param[0]->GetX(), param[0]->GetY(), param[0]->GetZ()); | |
499 | xyz[1].SetXYZ(param[1]->GetX(), param[1]->GetY(), param[1]->GetZ()); | |
500 | xyz[2] = xyz[0] - xyz[1]; | |
501 | sep = xyz[2].Mag(); | |
502 | } | |
503 | ||
504 | ||
c04c80e6 | 505 | |
506 | // | |
507 | // Apply the cuts, produce QA plots (with mass cut) | |
508 | // | |
509 | fQA->Fill("h_Gamma_Mass", 0, iMass); | |
3a72645a | 510 | |
511 | // MC | |
512 | if(fMCEvent){ | |
513 | if(1 == fCurrentV0id){ | |
514 | fQAmc->Fill("h_Gamma_Mass_S", 0, iMass); | |
515 | fQAmc->Fill("h_gamma_MvP_S", iP, iMass); | |
516 | } | |
517 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_Gamma_Mass_B", 0, iMass); | |
518 | } | |
519 | // cut distributions | |
c04c80e6 | 520 | if(iMass < cutMass){ |
c04c80e6 | 521 | fQA->Fill("h_Electron_P", 0, p[0]); |
522 | fQA->Fill("h_Electron_P", 0, p[1]); | |
523 | fQA->Fill("h_cut_Gamma_CosPoint", 0, cosPoint); | |
c04c80e6 | 524 | fQA->Fill("h_cut_Gamma_DCA", 0, dca); |
3a72645a | 525 | fQA->Fill("h_cut_Gamma_VtxR_old", 0, r); |
526 | fQA->Fill("h_cut_Gamma_VtxR", 0, r2); | |
c04c80e6 | 527 | fQA->Fill("h_cut_Gamma_PP", 0, psiPair); |
528 | fQA->Fill("h_cut_Gamma_Chi2", 0, chi2ndf); | |
3a72645a | 529 | fQA->Fill("h_cut_Gamma_Chi2", 1, chi2ndf, iP); |
e97c2edf | 530 | fQA->Fill("h_cut_Gamma_Sep", 0, iP, sep); |
531 | ||
3a72645a | 532 | |
533 | if(fMCEvent){ | |
534 | // MC signal | |
535 | if(1 == fCurrentV0id){ | |
536 | fQAmc->Fill("h_cut_Gamma_CosPoint_S", 0, iP, cosPoint); | |
537 | fQAmc->Fill("h_cut_Gamma_DCA_S", 0, iP, dca); | |
538 | fQAmc->Fill("h_cut_Gamma_VtxR_S", 0, iP, r2); | |
3a72645a | 539 | fQAmc->Fill("h_cut_Gamma_PP_S", 0, iP, psiPair); |
540 | fQAmc->Fill("h_cut_Gamma_Chi2_S", 0, iP, chi2ndf); | |
541 | fQAmc->Fill("h_cut_Gamma_Chi2_S", 1, iP, chi2ndf); | |
e97c2edf | 542 | fQAmc->Fill("h_cut_Gamma_Sep_S", 0, iP, sep); |
c2690925 | 543 | fQAmc->Fill("h_cut_Gamma_SepR_S", 0,r2, sep); |
3a72645a | 544 | fQAmc->Fill("h_Electron_P_S", 0, p[0]); |
545 | fQAmc->Fill("h_Electron_P_S", 0, p[1]); | |
546 | } | |
547 | // MC background | |
548 | else if(-2 != fCurrentV0id){ | |
549 | fQAmc->Fill("h_cut_Gamma_CosPoint_B", 0, iP, cosPoint); | |
550 | fQAmc->Fill("h_cut_Gamma_DCA_B", 0, iP, dca); | |
551 | fQAmc->Fill("h_cut_Gamma_VtxR_B", 0, iP, r2); | |
3a72645a | 552 | fQAmc->Fill("h_cut_Gamma_PP_B", 0, iP, psiPair); |
553 | fQAmc->Fill("h_cut_Gamma_Chi2_B", 0, iP, chi2ndf); | |
554 | fQAmc->Fill("h_cut_Gamma_Chi2_B", 1, iP, chi2ndf); | |
e97c2edf | 555 | fQAmc->Fill("h_cut_Gamma_Sep_B", 0, iP, sep); |
c2690925 | 556 | fQAmc->Fill("h_cut_Gamma_SepR_B", 0,r2, sep); |
3a72645a | 557 | fQAmc->Fill("h_Electron_P_B", 0, p[0]); |
558 | fQAmc->Fill("h_Electron_P_B", 0, p[1]); | |
559 | } | |
560 | } | |
561 | } | |
c04c80e6 | 562 | |
3a72645a | 563 | |
564 | // | |
565 | // Chi2/NDF cut | |
566 | // | |
567 | if(chi2ndf > cutChi2NDF) return kFALSE; | |
c04c80e6 | 568 | fQA->Fill("h_Gamma_Mass", 1, iMass); |
569 | if(iMass < cutMass){ | |
3a72645a | 570 | fQA->Fill("h_cut_Gamma_CosPoint", 1, cosPoint); |
c04c80e6 | 571 | fQA->Fill("h_Electron_P", 1, p[0]); |
572 | fQA->Fill("h_Electron_P", 1, p[1]); | |
c04c80e6 | 573 | } |
3a72645a | 574 | if(fMCEvent){ |
575 | if(1 == fCurrentV0id) fQAmc->Fill("h_Gamma_Mass_S", 1, iMass); | |
576 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_Gamma_Mass_B", 1, iMass); | |
577 | if(iMass < cutMass){ | |
578 | if(1 == fCurrentV0id){ | |
579 | fQAmc->Fill("h_cut_Gamma_CosPoint_S", 1, iP, cosPoint); | |
580 | fQAmc->Fill("h_Electron_P_S", 1, p[0]); | |
581 | fQAmc->Fill("h_Electron_P_S", 1, p[1]); | |
582 | } | |
583 | else if(-2 != fCurrentV0id){ | |
584 | fQAmc->Fill("h_cut_Gamma_CosPoint_B", 1, iP, cosPoint); | |
585 | fQAmc->Fill("h_Electron_P_B", 1, p[0]); | |
586 | fQAmc->Fill("h_Electron_P_B", 1, p[1]); | |
587 | } | |
588 | } | |
589 | } | |
590 | ||
591 | // | |
592 | // Cos point cut | |
593 | // | |
594 | if(cosPoint < cutCosPoint[0] || cosPoint > cutCosPoint[1]) return kFALSE; | |
c04c80e6 | 595 | fQA->Fill("h_Gamma_Mass", 2, iMass); |
596 | if(iMass < cutMass){ | |
597 | fQA->Fill("h_Electron_P", 2, p[0]); | |
598 | fQA->Fill("h_Electron_P", 2, p[1]); | |
3a72645a | 599 | fQA->Fill("h_cut_Gamma_DCA", 1, dca); |
c04c80e6 | 600 | } |
3a72645a | 601 | if(fMCEvent){ |
602 | if(1 == fCurrentV0id) fQAmc->Fill("h_Gamma_Mass_S", 2, iMass); | |
603 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_Gamma_Mass_B", 2, iMass); | |
604 | if(iMass < cutMass){ | |
605 | if(1 == fCurrentV0id){ | |
606 | fQAmc->Fill("h_cut_Gamma_DCA_S", 1, iP, dca); | |
607 | fQAmc->Fill("h_Electron_P_S", 2, p[0]); | |
608 | fQAmc->Fill("h_Electron_P_S", 2, p[1]); | |
609 | ||
610 | } | |
611 | else if(-2 != fCurrentV0id){ | |
612 | fQAmc->Fill("h_cut_Gamma_DCA_B", 1, iP, dca); | |
613 | fQAmc->Fill("h_Electron_P_B", 2, p[0]); | |
614 | fQAmc->Fill("h_Electron_P_B", 2, p[1]); | |
615 | ||
616 | } | |
617 | } | |
618 | } | |
619 | ||
620 | // | |
621 | // DCA cut | |
622 | // | |
623 | if(dca < cutDCA[0] || dca > cutDCA[1]) return kFALSE; | |
c04c80e6 | 624 | fQA->Fill("h_Gamma_Mass", 3, iMass); |
625 | if(iMass < cutMass){ | |
626 | fQA->Fill("h_Electron_P", 3, p[0]); | |
627 | fQA->Fill("h_Electron_P", 3, p[1]); | |
3a72645a | 628 | fQA->Fill("h_cut_Gamma_VtxR_old", 1, r); |
629 | fQA->Fill("h_cut_Gamma_VtxR", 1, r2); | |
630 | } | |
631 | if(fMCEvent){ | |
632 | if(1 == fCurrentV0id) fQAmc->Fill("h_Gamma_Mass_S", 3, iMass); | |
633 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_Gamma_Mass_B", 3, iMass); | |
634 | if(iMass < cutMass){ | |
635 | if(1 == fCurrentV0id){ | |
636 | fQAmc->Fill("h_cut_Gamma_VtxR_S", 1, iP, r2); | |
637 | fQAmc->Fill("h_Electron_P_S", 3, p[0]); | |
638 | fQAmc->Fill("h_Electron_P_S", 3, p[1]); | |
639 | ||
640 | } | |
641 | else if(-2 != fCurrentV0id){ | |
642 | fQAmc->Fill("h_cut_Gamma_VtxR_B", 1, iP, r2); | |
643 | fQAmc->Fill("h_Electron_P_B", 3, p[0]); | |
644 | fQAmc->Fill("h_Electron_P_B", 3, p[1]); | |
645 | } | |
646 | } | |
c04c80e6 | 647 | } |
648 | ||
3a72645a | 649 | // |
650 | // Vertex radius cut | |
651 | // | |
652 | if(r < cutProdVtxR[0] || r > cutProdVtxR[1]) return kFALSE; | |
c04c80e6 | 653 | fQA->Fill("h_Gamma_Mass", 4, iMass); |
654 | if(iMass < cutMass){ | |
3a72645a | 655 | fQA->Fill("h_cut_Gamma_PP", 1, psiPair); |
c04c80e6 | 656 | fQA->Fill("h_Electron_P", 4, p[0]); |
657 | fQA->Fill("h_Electron_P", 4, p[1]); | |
3a72645a | 658 | } |
659 | if(fMCEvent){ | |
660 | if(1 == fCurrentV0id) fQAmc->Fill("h_Gamma_Mass_S", 4, iMass); | |
661 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_Gamma_Mass_B", 4, iMass); | |
662 | if(iMass < cutMass){ | |
663 | if(1 == fCurrentV0id){ | |
664 | fQAmc->Fill("h_cut_Gamma_PP_S", 1, iP, psiPair); | |
665 | fQAmc->Fill("h_Electron_P_S", 4, p[0]); | |
666 | fQAmc->Fill("h_Electron_P_S", 4, p[1]); | |
667 | } | |
668 | else if(-2 != fCurrentV0id){ | |
669 | fQAmc->Fill("h_cut_Gamma_PP_B", 1, iP, psiPair); | |
670 | fQAmc->Fill("h_Electron_P_B", 4, p[0]); | |
671 | fQAmc->Fill("h_Electron_P_B", 4, p[1]); | |
672 | } | |
673 | } | |
c04c80e6 | 674 | } |
675 | ||
3a72645a | 676 | |
677 | // | |
678 | // PsiPair cut | |
679 | // | |
c04c80e6 | 680 | if(psiPair < cutPsiPair[0] || psiPair > cutPsiPair[1]) return kFALSE; |
681 | fQA->Fill("h_Gamma_Mass", 5, iMass); | |
682 | if(iMass < cutMass){ | |
e97c2edf | 683 | fQA->Fill("h_cut_Gamma_Sep", 1, iP, sep); |
c04c80e6 | 684 | fQA->Fill("h_Electron_P", 5, p[0]); |
685 | fQA->Fill("h_Electron_P", 5, p[1]); | |
3a72645a | 686 | } |
687 | if(fMCEvent){ | |
688 | if(1 == fCurrentV0id) fQAmc->Fill("h_Gamma_Mass_S", 5, iMass); | |
689 | else if(-2 != fCurrentV0id)fQAmc->Fill("h_Gamma_Mass_B", 5, iMass); | |
690 | ||
691 | if(iMass < cutMass){ | |
692 | if(1 == fCurrentV0id){ | |
e97c2edf | 693 | fQAmc->Fill("h_cut_Gamma_Sep_S", 1, iP, sep); |
c2690925 | 694 | fQAmc->Fill("h_cut_Gamma_SepR_S", 1,r2, sep); |
3a72645a | 695 | fQAmc->Fill("h_Electron_P_S", 5, p[0]); |
696 | fQAmc->Fill("h_Electron_P_S", 5, p[1]); | |
697 | } | |
698 | else if(-2 != fCurrentV0id){ | |
e97c2edf | 699 | fQAmc->Fill("h_cut_Gamma_Sep_B", 1, iP, sep); |
c2690925 | 700 | fQAmc->Fill("h_cut_Gamma_SepR_B", 1,r2, sep); |
3a72645a | 701 | fQAmc->Fill("h_Electron_P_B", 5, p[0]); |
702 | fQAmc->Fill("h_Electron_P_B", 5, p[1]); | |
703 | } | |
704 | } | |
c04c80e6 | 705 | } |
706 | ||
e97c2edf | 707 | |
708 | // TESTING NEW CUT | |
3a72645a | 709 | // |
e97c2edf | 710 | // distance of the tracks at the entrance of the TPC |
3a72645a | 711 | // |
e97c2edf | 712 | if(sep < cutSeparation) return kFALSE; |
c04c80e6 | 713 | fQA->Fill("h_Gamma_Mass", 6, iMass); |
714 | if(iMass < cutMass){ | |
715 | fQA->Fill("h_Electron_P", 6, p[0]); | |
716 | fQA->Fill("h_Electron_P", 6, p[1]); | |
c04c80e6 | 717 | } |
3a72645a | 718 | if(fMCEvent){ |
719 | if(1 == fCurrentV0id) fQAmc->Fill("h_Gamma_Mass_S", 6, iMass); | |
e97c2edf | 720 | else if(-2 != fCurrentV0id)fQAmc->Fill("h_Gamma_Mass_B", 6, iMass); |
721 | ||
3a72645a | 722 | if(iMass < cutMass){ |
723 | if(1 == fCurrentV0id){ | |
724 | fQAmc->Fill("h_Electron_P_S", 6, p[0]); | |
725 | fQAmc->Fill("h_Electron_P_S", 6, p[1]); | |
726 | } | |
727 | else if(-2 != fCurrentV0id){ | |
728 | fQAmc->Fill("h_Electron_P_B", 6, p[0]); | |
729 | fQAmc->Fill("h_Electron_P_B", 6, p[1]); | |
730 | } | |
731 | } | |
c04c80e6 | 732 | } |
733 | ||
e97c2edf | 734 | // .. test |
735 | ||
c04c80e6 | 736 | |
737 | if(iMass > cutMass) return kFALSE; | |
738 | ||
739 | // all cuts passed | |
3a72645a | 740 | |
741 | ||
742 | // some MC stuff | |
743 | //printf("**D: gamma V0id: %i, P: %i, N: %i \n", fCurrentV0id, fPdaughterPDG, fNdaughterPDG); | |
744 | if(1 == fCurrentV0id){ | |
745 | fQAmc->Fill("h_gamma_p_S", iP); | |
746 | fQAmc->Fill("h_Electron_P_S", 7, p[0]); | |
747 | fQAmc->Fill("h_Electron_P_S", 7, p[1]); | |
748 | } | |
749 | else if (-2 != fCurrentV0id){ | |
750 | fQAmc->Fill("h_gamma_p_B", iP); | |
751 | fQAmc->Fill("h_Electron_P_B", 7, p[0]); | |
752 | fQAmc->Fill("h_Electron_P_B", 7, p[1]); | |
753 | } | |
754 | ||
755 | ||
c04c80e6 | 756 | return kTRUE; |
757 | } | |
758 | //________________________________________________________________ | |
759 | Bool_t AliHFEV0cuts::K0Cuts(AliESDv0 *v0){ | |
760 | // | |
761 | // K0 cuts | |
762 | // | |
763 | ||
764 | if(!v0) return kFALSE; | |
765 | ||
3a72645a | 766 | if(fMCEvent){ |
767 | if(2 == fCurrentV0id){ | |
768 | fQAmc->Fill("h_Mass_K0_as_G", v0->GetEffMass(0, 0)); | |
769 | fQAmc->Fill("h_Mass_K0_as_L", v0->GetEffMass(2, 4)); | |
770 | fQAmc->Fill("h_Mass_K0_as_L", v0->GetEffMass(4, 2)); | |
771 | } | |
772 | } | |
773 | ||
774 | //const Double_t cK0mass=TDatabasePDG::Instance()->GetParticle(kK0Short)->Mass(); // PDG K0s mass | |
c04c80e6 | 775 | AliVTrack* daughter[2]; |
776 | Int_t pIndex = 0, nIndex = 0; | |
777 | if(CheckSigns(v0)){ | |
778 | pIndex = v0->GetPindex(); | |
779 | nIndex = v0->GetNindex(); | |
780 | } | |
781 | else{ | |
782 | pIndex = v0->GetNindex(); | |
783 | nIndex = v0->GetPindex(); | |
784 | } | |
785 | ||
786 | daughter[0] = dynamic_cast<AliVTrack *>(fInputEvent->GetTrack(pIndex)); | |
787 | daughter[1] = dynamic_cast<AliVTrack *>(fInputEvent->GetTrack(nIndex)); | |
788 | if(!daughter[0] || !daughter[1]) return kFALSE; | |
789 | ||
790 | AliKFParticle *kfMother = CreateMotherParticle(daughter[0], daughter[1], TMath::Abs(kPiPlus), TMath::Abs(kPiPlus)); | |
791 | if(!kfMother) return kFALSE; | |
792 | // production vertex is set in the 'CreateMotherParticle' function | |
3a72645a | 793 | //kfMother->SetMassConstraint(cK0mass, 0.); |
c04c80e6 | 794 | |
795 | AliESDtrack* d[2]; | |
796 | d[0] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(pIndex)); | |
797 | d[1] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(nIndex)); | |
798 | ||
799 | Float_t iMass = v0->GetEffMass(2, 2); | |
800 | Float_t iP = v0->P(); | |
801 | Float_t p[2] = {d[0]->GetP(), d[1]->GetP()}; | |
802 | Double_t theta = v0->Theta(); | |
803 | Double_t phi = v0->Phi(); | |
804 | Double_t pt = v0->Pt(); | |
805 | Double_t data[4] = {0., 0., 0., 0.}; | |
3a72645a | 806 | |
c04c80e6 | 807 | // Cut values |
c2690925 | 808 | const Double_t cutChi2NDF = 2.; // ORG [7.] |
3a72645a | 809 | const Double_t cutCosPoint[2] = {0., 0.02}; // ORG [0., 0.03] |
c04c80e6 | 810 | const Double_t cutDCA[2] = {0., 0.2}; // ORG [0., 0.1] |
811 | const Double_t cutProdVtxR[2] = {2.0, 30.}; // ORG [0., 8.1] | |
e97c2edf | 812 | const Double_t cutMass[2] = {0.486, 0.508}; // ORG [0.485, 0.51] |
c04c80e6 | 813 | // Values |
814 | ||
815 | // cos pointing angle | |
816 | Double_t cosPoint = v0->GetV0CosineOfPointingAngle(); | |
817 | cosPoint = TMath::ACos(cosPoint); | |
818 | ||
819 | // DCA between daughters | |
820 | Double_t dca = v0->GetDcaV0Daughters(); | |
821 | ||
822 | // Production vertex | |
823 | Double_t x, y, z; | |
824 | v0->GetXYZ(x,y,z); | |
825 | ||
826 | Double_t r = TMath::Sqrt(x*x + y*y); | |
827 | ||
828 | // V0 chi2/ndf | |
829 | Double_t chi2ndf = kfMother->GetChi2()/kfMother->GetNDF(); | |
830 | ||
831 | if(kfMother) delete kfMother; | |
832 | ||
c04c80e6 | 833 | // |
834 | // Apply the cuts, produce QA plots (with mass cut) | |
835 | // | |
836 | ||
837 | fQA->Fill("h_K0_Mass", 0, iMass); | |
3a72645a | 838 | // MC |
839 | if(fMCEvent){ | |
840 | if(2 == fCurrentV0id){ | |
841 | fQAmc->Fill("h_K0_Mass_S", 0, iMass); | |
842 | fQAmc->Fill("h_K0_MvP_S", iP, iMass); | |
843 | } | |
844 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_K0_Mass_B", 0, iMass); | |
845 | } | |
846 | ||
c04c80e6 | 847 | if(iMass > cutMass[0] && iMass < cutMass[1]){ |
c04c80e6 | 848 | fQA->Fill("h_PionK0_P", 0, p[0]); |
849 | fQA->Fill("h_PionK0_P", 0, p[1]); | |
850 | fQA->Fill("h_cut_K0_CosPoint", 0, cosPoint); | |
c04c80e6 | 851 | fQA->Fill("h_cut_K0_DCA", 0, dca); |
852 | fQA->Fill("h_cut_K0_VtxR", 0, r); | |
853 | fQA->Fill("h_cut_K0_Chi2", 0, chi2ndf); | |
3a72645a | 854 | fQA->Fill("h_cut_K0_Chi2", 1, chi2ndf); |
855 | } | |
856 | ||
857 | // MC | |
858 | if(fMCEvent){ | |
859 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
860 | if(2 == fCurrentV0id){ | |
861 | fQAmc->Fill("h_cut_K0_CosPoint_S", 0, iP, cosPoint); | |
862 | fQAmc->Fill("h_cut_K0_DCA_S", 0, iP, dca); | |
863 | fQAmc->Fill("h_cut_K0_VtxR_S", 0, iP, r); | |
864 | fQAmc->Fill("h_cut_K0_Chi2_S", 0, iP, chi2ndf); | |
865 | fQAmc->Fill("h_cut_K0_Chi2_S", 1, iP, chi2ndf); | |
3a72645a | 866 | fQAmc->Fill("h_PionK0_P_S", 0, p[0]); |
867 | fQAmc->Fill("h_PionK0_P_S", 0, p[1]); | |
868 | } | |
869 | else if(-2 != fCurrentV0id){ | |
870 | fQAmc->Fill("h_cut_K0_CosPoint_B", 0, iP, cosPoint); | |
871 | fQAmc->Fill("h_cut_K0_DCA_B", 0, iP, dca); | |
872 | fQAmc->Fill("h_cut_K0_VtxR_B", 0, iP, r); | |
873 | fQAmc->Fill("h_cut_K0_Chi2_B", 0, iP, chi2ndf); | |
874 | fQAmc->Fill("h_cut_K0_Chi2_B", 1, iP, chi2ndf); | |
3a72645a | 875 | fQAmc->Fill("h_PionK0_P_B", 0, p[0]); |
876 | fQAmc->Fill("h_PionK0_P_B", 0, p[1]); | |
877 | } | |
878 | } | |
c04c80e6 | 879 | } |
880 | ||
3a72645a | 881 | // |
882 | // Chi2/NDF cut | |
883 | // | |
884 | if(chi2ndf > cutChi2NDF) return kFALSE; | |
c04c80e6 | 885 | fQA->Fill("h_K0_Mass", 1, iMass); |
886 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
3a72645a | 887 | fQA->Fill("h_cut_K0_CosPoint", 1, cosPoint); |
c04c80e6 | 888 | fQA->Fill("h_PionK0_P", 1, p[0]); |
889 | fQA->Fill("h_PionK0_P", 1, p[1]); | |
3a72645a | 890 | } |
891 | if(fMCEvent){ | |
892 | if(2 == fCurrentV0id) fQAmc->Fill("h_K0_Mass_S", 1, iMass); | |
893 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_K0_Mass_B", 1, iMass); | |
894 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
895 | if(2 == fCurrentV0id){ | |
896 | fQAmc->Fill("h_cut_K0_CosPoint_S", 1, iP, cosPoint); | |
897 | fQAmc->Fill("h_PionK0_P_S", 1, p[0]); | |
898 | fQAmc->Fill("h_PionK0_P_S", 1, p[1]); | |
899 | } | |
900 | else if(-2 != fCurrentV0id){ | |
901 | fQAmc->Fill("h_cut_K0_CosPoint_B", 1, iP, cosPoint); | |
902 | fQAmc->Fill("h_PionK0_P_B", 1, p[0]); | |
903 | fQAmc->Fill("h_PionK0_P_B", 1, p[1]); | |
904 | } | |
905 | } | |
c04c80e6 | 906 | } |
3a72645a | 907 | |
908 | // | |
909 | // Cos point cut | |
910 | // | |
911 | if(cosPoint < cutCosPoint[0] || cosPoint > cutCosPoint[1]) return kFALSE; | |
c04c80e6 | 912 | fQA->Fill("h_K0_Mass", 2, iMass); |
913 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
914 | fQA->Fill("h_PionK0_P", 2, p[0]); | |
915 | fQA->Fill("h_PionK0_P", 2, p[1]); | |
3a72645a | 916 | fQA->Fill("h_cut_K0_DCA", 1, dca); |
917 | } | |
918 | if(fMCEvent){ | |
919 | if(2 == fCurrentV0id) fQAmc->Fill("h_K0_Mass_S", 2, iMass); | |
920 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_K0_Mass_B", 2, iMass); | |
921 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
922 | if(2 == fCurrentV0id){ | |
923 | fQAmc->Fill("h_cut_K0_DCA_S", 1, iP, dca); | |
924 | fQAmc->Fill("h_PionK0_P_S", 2, p[0]); | |
925 | fQAmc->Fill("h_PionK0_P_S", 2, p[1]); | |
926 | } | |
927 | else if(-2 != fCurrentV0id){ | |
928 | fQAmc->Fill("h_cut_K0_DCA_B", 1, iP, dca); | |
929 | fQAmc->Fill("h_PionK0_P_B", 2, p[0]); | |
930 | fQAmc->Fill("h_PionK0_P_B", 2, p[1]); | |
931 | } | |
932 | } | |
c04c80e6 | 933 | } |
c04c80e6 | 934 | |
3a72645a | 935 | |
936 | // | |
937 | // DCA cut | |
938 | // | |
939 | if(dca < cutDCA[0] || dca > cutDCA[1]) return kFALSE; | |
c04c80e6 | 940 | fQA->Fill("h_K0_Mass", 3, iMass); |
941 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
942 | fQA->Fill("h_PionK0_P", 3, p[0]); | |
943 | fQA->Fill("h_PionK0_P", 3, p[1]); | |
3a72645a | 944 | fQA->Fill("h_cut_K0_VtxR", 1, r); |
945 | } | |
946 | if(fMCEvent){ | |
947 | if(2 == fCurrentV0id) fQAmc->Fill("h_K0_Mass_S", 3, iMass); | |
948 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_K0_Mass_B", 3, iMass); | |
949 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
950 | if(2 == fCurrentV0id){ | |
951 | fQAmc->Fill("h_cut_K0_VtxR_S", 1, iP, r); | |
952 | fQAmc->Fill("h_PionK0_P_S", 3, p[0]); | |
953 | fQAmc->Fill("h_PionK0_P_S", 3, p[1]); | |
954 | } | |
955 | else if(-2 != fCurrentV0id){ | |
956 | fQAmc->Fill("h_cut_K0_VtxR_B", 1, iP, r); | |
957 | fQAmc->Fill("h_PionK0_P_B", 3, p[0]); | |
958 | fQAmc->Fill("h_PionK0_P_B", 3, p[1]); | |
959 | } | |
960 | } | |
c04c80e6 | 961 | } |
962 | ||
3a72645a | 963 | |
964 | // | |
965 | // Vertex R cut | |
966 | // | |
967 | if(r < cutProdVtxR[0] || r > cutProdVtxR[1]) return kFALSE; | |
c04c80e6 | 968 | fQA->Fill("h_K0_Mass", 4, iMass); |
969 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
970 | fQA->Fill("h_PionK0_P", 4, p[0]); | |
971 | fQA->Fill("h_PionK0_P", 4, p[1]); | |
c04c80e6 | 972 | } |
3a72645a | 973 | if(fMCEvent){ |
974 | if(2 == fCurrentV0id) fQAmc->Fill("h_K0_Mass_S", 4, iMass); | |
975 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_K0_Mass_B", 4, iMass); | |
976 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
977 | if(2 == fCurrentV0id){ | |
3a72645a | 978 | fQAmc->Fill("h_PionK0_P_S", 4, p[0]); |
979 | fQAmc->Fill("h_PionK0_P_S", 4, p[1]); | |
980 | } | |
981 | else if(-2 != fCurrentV0id){ | |
3a72645a | 982 | fQAmc->Fill("h_PionK0_P_B", 4, p[0]); |
983 | fQAmc->Fill("h_PionK0_P_B", 4, p[1]); | |
984 | } | |
985 | } | |
c04c80e6 | 986 | } |
987 | ||
988 | data[0] = iMass; | |
989 | data[1] = pt; | |
990 | data[2] = theta; | |
991 | data[3] = phi; | |
992 | //printf("-D: m: %f, pT: %f, theta: %f, phi: %f\n", invMass, mPt, theta, phi); | |
993 | fQA->Fill("hK0", data); | |
994 | ||
995 | ||
996 | if(iMass < cutMass[0] || iMass > cutMass[1]) return kFALSE; | |
997 | ||
998 | // all cuts passed | |
999 | ||
3a72645a | 1000 | // some MC stuff |
1001 | if(2 == fCurrentV0id){ | |
1002 | fQAmc->Fill("h_K0_p_S", iP); | |
1003 | fQAmc->Fill("h_PionK0_P_S", 5, p[0]); | |
1004 | fQAmc->Fill("h_PionK0_P_S", 5, p[1]); | |
1005 | } | |
1006 | else if (-2 != fCurrentV0id){ | |
1007 | fQAmc->Fill("h_K0_p_B", iP); | |
1008 | fQAmc->Fill("h_PionK0_P_B", 5, p[0]); | |
1009 | fQAmc->Fill("h_PionK0_P_B", 5, p[1]); | |
1010 | } | |
1011 | ||
c04c80e6 | 1012 | return kTRUE; |
1013 | } | |
1014 | //________________________________________________________________ | |
1015 | Bool_t AliHFEV0cuts::LambdaCuts(AliESDv0 *v0, Bool_t &isLambda ){ | |
1016 | // | |
1017 | // Lambda cuts - decision on Lambda - AntiLambda is taken too | |
1018 | // | |
1019 | // discrimination between lambda and antilambda - correlation of the following variables necessary: | |
1020 | // - momentum of the proton AND momentum of the pion (proton momentum is allways larger) | |
1021 | // - mass of the mother particle | |
1022 | ||
1023 | if(!v0) return kFALSE; | |
1024 | ||
3a72645a | 1025 | if(fMCEvent){ |
1026 | if(4 == fCurrentV0id){ | |
1027 | fQAmc->Fill("h_Mass_L_as_G", v0->GetEffMass(0, 0)); | |
1028 | fQAmc->Fill("h_Mass_L_as_K0", v0->GetEffMass(2, 0)); | |
1029 | } | |
1030 | } | |
e156c3bb | 1031 | |
c04c80e6 | 1032 | const Double_t cL0mass=TDatabasePDG::Instance()->GetParticle(kLambda0)->Mass(); // PDG lambda mass |
1033 | ||
1034 | AliVTrack* daughter[2]; | |
1035 | Int_t pIndex = 0, nIndex = 0; | |
1036 | Float_t mMass[2] = {-1., -1.}; | |
1037 | if(CheckSigns(v0)){ | |
1038 | pIndex = v0->GetPindex(); | |
1039 | nIndex = v0->GetNindex(); | |
1040 | mMass[0] = v0->GetEffMass(4, 2); | |
1041 | mMass[1] = v0->GetEffMass(2, 4); | |
1042 | } | |
1043 | else{ | |
1044 | pIndex = v0->GetNindex(); | |
1045 | nIndex = v0->GetPindex(); | |
1046 | mMass[0] = v0->GetEffMass(2, 4); | |
1047 | mMass[1] = v0->GetEffMass(4, 2); | |
1048 | } | |
1049 | ||
1050 | daughter[0] = dynamic_cast<AliVTrack *>(fInputEvent->GetTrack(pIndex)); | |
1051 | daughter[1] = dynamic_cast<AliVTrack *>(fInputEvent->GetTrack(nIndex)); | |
1052 | if(!daughter[0] || !daughter[1]) return kFALSE; | |
1053 | ||
1054 | AliKFParticle *kfMother[2] = {0x0, 0x0}; | |
1055 | // Lambda | |
1056 | kfMother[0] = CreateMotherParticle(daughter[0], daughter[1], TMath::Abs(kProton), TMath::Abs(kPiPlus)); | |
1057 | if(!kfMother[0]) return kFALSE; | |
1058 | ||
1059 | // production vertex is set in the 'CreateMotherParticle' function | |
3a72645a | 1060 | //kfMother[0]->SetMassConstraint(cL0mass, 0.); |
c04c80e6 | 1061 | |
1062 | // Anti Lambda | |
1063 | kfMother[1] = CreateMotherParticle(daughter[0], daughter[1], TMath::Abs(kPiPlus), TMath::Abs(kProton)); | |
1064 | if(!kfMother[1]) return kFALSE; | |
1065 | // production vertex is set in the 'CreateMotherParticle' function | |
3a72645a | 1066 | //kfMother[1]->SetMassConstraint(cL0mass, 0.); |
c04c80e6 | 1067 | |
1068 | Float_t dMass[2] = {TMath::Abs(mMass[0] - cL0mass), TMath::Abs(mMass[1] - cL0mass)}; | |
1069 | ||
1070 | AliESDtrack* d[2]; | |
1071 | d[0] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(pIndex)); | |
1072 | d[1] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(nIndex)); | |
1073 | if(!d[0] || !d[1]) return kFALSE; | |
1074 | ||
1075 | Float_t p[2] = {d[0]->GetP(), d[1]->GetP()}; | |
1076 | ||
1077 | // check the 3 lambda - antilambda variables | |
1078 | Int_t check[2] = {-1, -1}; // 0 : lambda, 1 : antilambda | |
1079 | // 1) momentum of the daughter particles - proton is expected to have higher momentum than pion | |
1080 | check[0] = (p[0] > p[1]) ? 0 : 1; | |
1081 | // 2) mass of the mother particle | |
1082 | check[1] = (dMass[0] < dMass[1]) ? 0 : 1; | |
1083 | fQA->Fill("h_L_checks", check[0]*1.0, check[1]*1.0); | |
1084 | ||
1085 | // if the two check do not agree | |
1086 | if(check[0] != check[1]){ | |
1087 | if(kfMother[0]) delete kfMother[0]; | |
1088 | if(kfMother[1]) delete kfMother[1]; | |
1089 | return kFALSE; | |
1090 | } | |
1091 | ||
1092 | // now that the check[0] == check[1] | |
1093 | const Int_t type = check[0]; | |
1094 | ||
1095 | Float_t iMass =0.; | |
1096 | if(CheckSigns(v0)){ | |
1097 | iMass = (type == 0) ? v0->GetEffMass(4, 2) : v0->GetEffMass(2, 4); | |
1098 | } | |
1099 | else{ | |
1100 | iMass = (type == 0) ? v0->GetEffMass(2, 4) : v0->GetEffMass(4, 2); | |
1101 | } | |
1102 | Float_t iP = v0->P(); | |
1103 | ||
1104 | // Cuts | |
c2690925 | 1105 | const Double_t cutChi2NDF = 2.; // ORG [5.] |
1106 | const Double_t cutCosPoint[2] = {0., 0.01}; // ORG [0., 0.02] | |
c04c80e6 | 1107 | const Double_t cutDCA[2] = {0., 0.2}; // ORG [0., 0.2] |
3a72645a | 1108 | const Double_t cutProdVtxR[2] = {2., 40.}; // ORG [0., 24.] |
c04c80e6 | 1109 | const Double_t cutMass[2] = {1.11, 1.12}; // ORG [1.11, 1.12] |
c04c80e6 | 1110 | // cundidate cuts |
c04c80e6 | 1111 | // relative daughter momentum versusu mother momentum |
c04c80e6 | 1112 | |
1113 | // compute the cut values | |
1114 | ||
1115 | // cos pointing angle | |
1116 | Double_t cosPoint = v0->GetV0CosineOfPointingAngle(); | |
1117 | cosPoint = TMath::ACos(cosPoint); | |
1118 | ||
1119 | // DCA between daughters | |
1120 | Double_t dca = v0->GetDcaV0Daughters(); | |
1121 | ||
1122 | // Production vertex | |
1123 | Double_t x, y, z; | |
1124 | v0->GetXYZ(x,y,z); | |
1125 | Double_t r = TMath::Sqrt(x*x + y*y); | |
1126 | ||
3a72645a | 1127 | // proton - pion indices |
c04c80e6 | 1128 | Int_t ix[2] = {0, 1}; |
1129 | if(1 == type){ | |
1130 | ix[0] = 1; | |
1131 | ix[1] = 0; | |
1132 | } | |
3a72645a | 1133 | |
1134 | // proton - pion indices - based on MC truth | |
1135 | // for background use the reconstructed indices | |
1136 | Int_t ixMC[2] = {-1, -1}; // {proton, pion} | |
1137 | if(fMCEvent){ | |
1138 | if(4 == fCurrentV0id){ | |
1139 | ixMC[0] = 0; | |
1140 | ixMC[1] = 1; | |
1141 | } | |
1142 | else if(-4 == fCurrentV0id){ | |
1143 | ixMC[0] = 1; | |
1144 | ixMC[1] = 0; | |
1145 | } | |
1146 | else{ | |
1147 | ixMC[0] = ix[0]; | |
1148 | ixMC[1] = ix[1]; | |
1149 | } | |
1150 | } | |
1151 | ||
c04c80e6 | 1152 | // V0 chi2/ndf |
1153 | Double_t chi2ndf = kfMother[type]->GetChi2()/kfMother[type]->GetNDF(); | |
1154 | ||
1155 | if(kfMother[0]) delete kfMother[0]; | |
1156 | if(kfMother[1]) delete kfMother[1]; | |
1157 | ||
c04c80e6 | 1158 | // Relative daughter momentum |
1159 | Double_t rP = (0 == check[0]) ? p[1]/p[0] : p[0]/p[1]; | |
1160 | ||
c04c80e6 | 1161 | |
1162 | // | |
1163 | // Apply the cuts, produce QA plots (with mass cut) | |
1164 | // | |
1165 | ||
1166 | (type == 0) ? fQA->Fill("h_L_Mass", 0, iMass) : fQA->Fill("h_AL_Mass", 0, iMass); | |
1167 | ||
3a72645a | 1168 | |
1169 | ||
1170 | // MC | |
1171 | if(fMCEvent){ | |
1172 | if(4 == fCurrentV0id){ | |
1173 | fQAmc->Fill("h_L_Mass_S", 0, iMass); | |
1174 | fQAmc->Fill("h_lambda_MvP_S", iP, iMass); | |
1175 | } | |
1176 | else if(-4 == fCurrentV0id){ | |
1177 | fQAmc->Fill("h_AL_Mass_S", 0, iMass); | |
1178 | fQAmc->Fill("h_lambda_MvP_S", iP, iMass); | |
1179 | } | |
1180 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_LAL_Mass_B", 0, iMass); | |
1181 | } | |
1182 | ||
1183 | ||
c04c80e6 | 1184 | if(iMass > cutMass[0] && iMass < cutMass[1]){ |
c04c80e6 | 1185 | fQA->Fill("h_ProtonL_P", 0, p[ix[0]]); |
1186 | fQA->Fill("h_PionL_P", 0, p[ix[1]]); | |
1187 | fQA->Fill("h_cut_L_Chi2", 0, chi2ndf); | |
3a72645a | 1188 | fQA->Fill("h_cut_L_Chi2", 1, chi2ndf); |
c04c80e6 | 1189 | fQA->Fill("h_cut_L_CosPoint", 0, cosPoint); |
c04c80e6 | 1190 | fQA->Fill("h_cut_L_DCA", 0, dca); |
1191 | fQA->Fill("h_cut_L_VtxR", 0, r); | |
c04c80e6 | 1192 | fQA->Fill("h_cut_L_rdp_v_mp", 0, iP, rP); |
c04c80e6 | 1193 | } |
3a72645a | 1194 | if(fMCEvent){ |
1195 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
1196 | if(4 == TMath::Abs(fCurrentV0id)){ | |
1197 | fQAmc->Fill("h_cut_L_Chi2_S", 0, iP, chi2ndf); | |
1198 | fQAmc->Fill("h_cut_L_Chi2_S", 1, iP, chi2ndf); | |
1199 | fQAmc->Fill("h_cut_L_CosPoint_S", 0, iP, cosPoint); | |
1200 | fQAmc->Fill("h_cut_L_DCA_S", 0, iP, dca); | |
1201 | fQAmc->Fill("h_cut_L_VtxR_S", 0, iP, r); | |
3a72645a | 1202 | fQAmc->Fill("h_cut_L_rdp_v_mp_S", 0, iP, rP); |
1203 | fQAmc->Fill("h_ProtonL_P_S", 0, p[ixMC[0]]); | |
1204 | fQAmc->Fill("h_PionL_P_S", 0, p[ixMC[1]]); | |
1205 | } | |
1206 | else if(-2 != fCurrentV0id){ | |
1207 | fQAmc->Fill("h_cut_L_Chi2_B", 0, iP, chi2ndf); | |
1208 | fQAmc->Fill("h_cut_L_Chi2_B", 1, iP, chi2ndf); | |
1209 | fQAmc->Fill("h_cut_L_CosPoint_B", 0, iP, cosPoint); | |
1210 | fQAmc->Fill("h_cut_L_DCA_B", 0, iP, dca); | |
1211 | fQAmc->Fill("h_cut_L_VtxR_B", 0, iP, r); | |
3a72645a | 1212 | fQAmc->Fill("h_cut_L_rdp_v_mp_B", 0, iP, rP); |
1213 | fQAmc->Fill("h_ProtonL_P_B", 0, p[ixMC[0]]); | |
1214 | fQAmc->Fill("h_PionL_P_B", 0, p[ixMC[1]]); | |
1215 | } | |
1216 | } | |
1217 | } | |
1218 | // | |
1219 | // Chi2/NDF cut | |
1220 | // | |
1221 | if(chi2ndf > cutChi2NDF) return kFALSE; | |
c04c80e6 | 1222 | (type == 0) ? fQA->Fill("h_L_Mass", 1, iMass) : fQA->Fill("h_AL_Mass", 1, iMass); |
1223 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
3a72645a | 1224 | fQA->Fill("h_cut_L_CosPoint", 1, cosPoint); |
c04c80e6 | 1225 | fQA->Fill("h_ProtonL_P", 1, p[ix[0]]); |
1226 | fQA->Fill("h_PionL_P", 1, p[ix[1]]); | |
c04c80e6 | 1227 | } |
3a72645a | 1228 | if(fMCEvent){ |
1229 | if(4 == fCurrentV0id) fQAmc->Fill("h_L_Mass_S", 1, iMass); | |
1230 | else if(-4 == fCurrentV0id) fQAmc->Fill("h_AL_Mass_S", 1, iMass); | |
1231 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_LAL_Mass_B", 1, iMass); | |
1232 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
1233 | if(4 == TMath::Abs(fCurrentV0id)){ | |
1234 | fQAmc->Fill("h_cut_L_CosPoint_S", 1, iP, cosPoint); | |
1235 | fQAmc->Fill("h_ProtonL_P_S", 1, p[ixMC[0]]); | |
1236 | fQAmc->Fill("h_PionL_P_S", 1, p[ixMC[1]]); | |
1237 | } | |
1238 | else if(-2 != fCurrentV0id){ | |
1239 | fQAmc->Fill("h_cut_L_CosPoint_B", 1, iP, cosPoint); | |
1240 | fQAmc->Fill("h_ProtonL_P_B", 1, p[ixMC[0]]); | |
1241 | fQAmc->Fill("h_PionL_P_B", 1, p[ixMC[1]]); | |
1242 | } | |
1243 | } | |
1244 | } | |
1245 | ||
1246 | // | |
1247 | // Cos point cut | |
1248 | // | |
1249 | if(cosPoint < cutCosPoint[0] || cosPoint > cutCosPoint[1]) return kFALSE; | |
c04c80e6 | 1250 | (type == 0) ? fQA->Fill("h_L_Mass", 2, iMass) : fQA->Fill("h_AL_Mass", 2, iMass); |
1251 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
1252 | fQA->Fill("h_ProtonL_P", 2, p[ix[0]]); | |
1253 | fQA->Fill("h_PionL_P", 2, p[ix[1]]); | |
3a72645a | 1254 | fQA->Fill("h_cut_L_DCA", 1, dca); |
1255 | } | |
1256 | if(fMCEvent){ | |
1257 | if(4 == fCurrentV0id) fQAmc->Fill("h_L_Mass_S", 2, iMass); | |
1258 | else if(-4 == fCurrentV0id) fQAmc->Fill("h_AL_Mass_S", 2, iMass); | |
1259 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_LAL_Mass_B", 2, iMass); | |
1260 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
1261 | if(4 == TMath::Abs(fCurrentV0id)){ | |
1262 | fQAmc->Fill("h_cut_L_DCA_S", 1, iP, dca); | |
1263 | fQAmc->Fill("h_ProtonL_P_S", 2, p[ixMC[0]]); | |
1264 | fQAmc->Fill("h_PionL_P_S", 2, p[ixMC[1]]); | |
1265 | } | |
1266 | else if(-2 != fCurrentV0id){ | |
1267 | fQAmc->Fill("h_cut_L_DCA_B", 1, iP, dca); | |
1268 | fQAmc->Fill("h_ProtonL_P_B", 2, p[ixMC[0]]); | |
1269 | fQAmc->Fill("h_PionL_P_B", 2, p[ixMC[1]]); | |
1270 | } | |
1271 | } | |
c04c80e6 | 1272 | } |
1273 | ||
3a72645a | 1274 | // |
1275 | // DCA cut | |
1276 | // | |
1277 | if(dca < cutDCA[0] || dca > cutDCA[1]) return kFALSE; | |
c04c80e6 | 1278 | (type == 0) ? fQA->Fill("h_L_Mass", 3, iMass) : fQA->Fill("h_AL_Mass", 3, iMass); |
1279 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
1280 | fQA->Fill("h_ProtonL_P", 3, p[ix[0]]); | |
1281 | fQA->Fill("h_PionL_P", 3, p[ix[1]]); | |
3a72645a | 1282 | fQA->Fill("h_cut_L_VtxR", 1, r); |
1283 | } | |
1284 | if(fMCEvent){ | |
1285 | if(4 == fCurrentV0id) fQAmc->Fill("h_L_Mass_S", 3, iMass); | |
1286 | else if(-4 == fCurrentV0id) fQAmc->Fill("h_AL_Mass_S", 3, iMass); | |
1287 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_LAL_Mass_B", 3, iMass); | |
1288 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
1289 | if(4 == TMath::Abs(fCurrentV0id)){ | |
1290 | fQAmc->Fill("h_cut_L_VtxR_S", 1, iP, r); | |
1291 | fQAmc->Fill("h_ProtonL_P_S", 3, p[ixMC[0]]); | |
1292 | fQAmc->Fill("h_PionL_P_S", 3, p[ixMC[1]]); | |
1293 | } | |
1294 | else if(-2 != fCurrentV0id){ | |
1295 | fQAmc->Fill("h_cut_L_VtxR_B", 1, iP, r); | |
1296 | fQAmc->Fill("h_ProtonL_P_B", 3, p[ixMC[0]]); | |
1297 | fQAmc->Fill("h_PionL_P_B", 3, p[ixMC[1]]); | |
1298 | } | |
1299 | } | |
c04c80e6 | 1300 | } |
1301 | ||
3a72645a | 1302 | // |
1303 | // Vertex radius cut | |
1304 | // | |
1305 | if(r < cutProdVtxR[0] || r > cutProdVtxR[1]) return kFALSE; | |
c04c80e6 | 1306 | (type == 0) ? fQA->Fill("h_L_Mass", 4, iMass) : fQA->Fill("h_AL_Mass", 4, iMass); |
1307 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
1308 | fQA->Fill("h_ProtonL_P", 4, p[ix[0]]); | |
1309 | fQA->Fill("h_PionL_P", 4, p[ix[1]]); | |
c04c80e6 | 1310 | } |
3a72645a | 1311 | if(fMCEvent){ |
1312 | if(4 == fCurrentV0id) fQAmc->Fill("h_L_Mass_S", 4, iMass); | |
1313 | else if(-4 == fCurrentV0id) fQAmc->Fill("h_AL_Mass_S", 4, iMass); | |
1314 | else if(-2 != fCurrentV0id) fQAmc->Fill("h_LAL_Mass_B", 4, iMass); | |
1315 | if(iMass > cutMass[0] && iMass < cutMass[1]){ | |
1316 | if(4 == TMath::Abs(fCurrentV0id)){ | |
3a72645a | 1317 | fQAmc->Fill("h_ProtonL_P_S", 4, p[ixMC[0]]); |
1318 | fQAmc->Fill("h_PionL_P_S", 4, p[ixMC[1]]); | |
1319 | } | |
1320 | else if(-2 != fCurrentV0id){ | |
3a72645a | 1321 | fQAmc->Fill("h_ProtonL_P_B", 4, p[ixMC[0]]); |
1322 | fQAmc->Fill("h_PionL_P_B", 4, p[ixMC[1]]); | |
1323 | } | |
1324 | } | |
c04c80e6 | 1325 | } |
1326 | ||
1327 | if(iMass < cutMass[0] || iMass > cutMass[1]) { | |
1328 | return kFALSE; | |
1329 | } | |
1330 | ||
1331 | // all cuts passed | |
1332 | ||
1333 | // assign the lambda type value: Lambda: kTRUE, Anti-Lambda: kFALSE | |
1334 | isLambda = (0 == type) ? kTRUE : kFALSE; | |
1335 | ||
3a72645a | 1336 | // some MC stuff |
1337 | if(4 == fCurrentV0id){ | |
1338 | fQAmc->Fill("h_lambda_p_S", iP); | |
1339 | } | |
1340 | else if(-4 == fCurrentV0id){ | |
1341 | fQAmc->Fill("h_alambda_p_S", iP); | |
1342 | } | |
1343 | else if (-2 != fCurrentV0id && 0 == type){ | |
1344 | fQAmc->Fill("h_lambda_p_B", iP); | |
1345 | } | |
1346 | else if(-2 != fCurrentV0id && 0 != type ){ | |
1347 | fQAmc->Fill("h_alambda_p_B", iP); | |
1348 | } | |
1349 | // | |
e156c3bb | 1350 | if(fMCEvent){ |
1351 | if(4 == TMath::Abs(fCurrentV0id)){ | |
1352 | fQAmc->Fill("h_ProtonL_P_S", 5, p[ixMC[0]]); | |
1353 | fQAmc->Fill("h_PionL_P_S", 5, p[ixMC[1]]); | |
1354 | } | |
1355 | else if(-2 != fCurrentV0id){ | |
1356 | fQAmc->Fill("h_ProtonL_P_B", 5, p[ixMC[0]]); | |
1357 | fQAmc->Fill("h_PionL_P_B", 5, p[ixMC[1]]); | |
1358 | } | |
3a72645a | 1359 | } |
c04c80e6 | 1360 | return kTRUE; |
1361 | } | |
1362 | //________________________________________________________________ | |
e156c3bb | 1363 | Double_t AliHFEV0cuts::OpenAngle(AliESDv0 const *v0){ |
c04c80e6 | 1364 | // |
1365 | // Opening angle between two daughter tracks | |
1366 | // | |
1367 | Double_t mn[3] = {0,0,0}; | |
1368 | Double_t mp[3] = {0,0,0}; | |
1369 | ||
1370 | ||
1371 | v0->GetNPxPyPz(mn[0],mn[1],mn[2]);//reconstructed cartesian momentum components of negative daughter; | |
1372 | v0->GetPPxPyPz(mp[0],mp[1],mp[2]);//reconstructed cartesian momentum components of positive daughter; | |
1373 | ||
1374 | ||
1375 | Double_t openAngle = TMath::ACos((mp[0]*mn[0] + mp[1]*mn[1] + mp[2]*mn[2])/(TMath::Sqrt(mp[0]*mp[0] + mp[1]*mp[1] + mp[2]*mp[2])*TMath::Sqrt(mn[0]*mn[0] + mn[1]*mn[1] + mn[2]*mn[2]))); | |
1376 | ||
1377 | return TMath::Abs(openAngle); | |
1378 | } | |
1379 | //________________________________________________________________ | |
e156c3bb | 1380 | Double_t AliHFEV0cuts::PsiPair(const AliESDv0 *v0) { |
c04c80e6 | 1381 | // |
1382 | // Angle between daughter momentum plane and plane | |
1383 | // | |
1384 | ||
1385 | if(!fInputEvent) return -1.; | |
1386 | ||
1387 | Float_t magField = fInputEvent->GetMagneticField(); | |
1388 | ||
1389 | Int_t pIndex = -1; | |
1390 | Int_t nIndex = -1; | |
1391 | if(CheckSigns(v0)){ | |
1392 | pIndex = v0->GetPindex(); | |
1393 | nIndex = v0->GetNindex(); | |
1394 | } | |
1395 | else{ | |
1396 | pIndex = v0->GetNindex(); | |
1397 | nIndex = v0->GetPindex(); | |
1398 | } | |
1399 | ||
1400 | ||
1401 | AliESDtrack* daughter[2]; | |
1402 | ||
1403 | daughter[0] = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(pIndex)); | |
1404 | daughter[1] = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(nIndex)); | |
1405 | ||
1406 | Double_t x, y, z; | |
1407 | v0->GetXYZ(x,y,z);//Reconstructed coordinates of V0; to be replaced by Markus Rammler's method in case of conversions! | |
1408 | ||
1409 | Double_t mn[3] = {0,0,0}; | |
1410 | Double_t mp[3] = {0,0,0}; | |
1411 | ||
1412 | ||
1413 | v0->GetNPxPyPz(mn[0],mn[1],mn[2]);//reconstructed cartesian momentum components of negative daughter; | |
1414 | v0->GetPPxPyPz(mp[0],mp[1],mp[2]);//reconstructed cartesian momentum components of positive daughter; | |
1415 | ||
1416 | ||
1417 | Double_t deltat = 1.; | |
1418 | deltat = TMath::ATan(mp[2]/(TMath::Sqrt(mp[0]*mp[0] + mp[1]*mp[1])+1.e-13)) - TMath::ATan(mn[2]/(TMath::Sqrt(mn[0]*mn[0] + mn[1]*mn[1])+1.e-13));//difference of angles of the two daughter tracks with z-axis | |
1419 | ||
1420 | Double_t radiussum = TMath::Sqrt(x*x + y*y) + 50;//radius to which tracks shall be propagated | |
1421 | ||
1422 | Double_t momPosProp[3]; | |
1423 | Double_t momNegProp[3]; | |
1424 | ||
1425 | AliExternalTrackParam pt(*daughter[0]), nt(*daughter[1]); | |
1426 | ||
1427 | Double_t psiPair = 4.; | |
1428 | ||
1429 | if(nt.PropagateTo(radiussum,magField) == 0)//propagate tracks to the outside | |
1430 | psiPair = -5.; | |
1431 | if(pt.PropagateTo(radiussum,magField) == 0) | |
1432 | psiPair = -5.; | |
1433 | pt.GetPxPyPz(momPosProp);//Get momentum vectors of tracks after propagation | |
1434 | nt.GetPxPyPz(momNegProp); | |
1435 | ||
1436 | Double_t pEle = | |
1437 | TMath::Sqrt(momNegProp[0]*momNegProp[0]+momNegProp[1]*momNegProp[1]+momNegProp[2]*momNegProp[2]);//absolute momentum value of negative daughter | |
1438 | Double_t pPos = | |
1439 | TMath::Sqrt(momPosProp[0]*momPosProp[0]+momPosProp[1]*momPosProp[1]+momPosProp[2]*momPosProp[2]);//absolute momentum value of positive daughter | |
1440 | ||
1441 | Double_t scalarproduct = | |
1442 | momPosProp[0]*momNegProp[0]+momPosProp[1]*momNegProp[1]+momPosProp[2]*momNegProp[2];//scalar product of propagated positive and negative daughters' momenta | |
1443 | ||
1444 | Double_t chipair = TMath::ACos(scalarproduct/(pEle*pPos));//Angle between propagated daughter tracks | |
1445 | ||
1446 | psiPair = TMath::Abs(TMath::ASin(deltat/chipair)); | |
1447 | ||
1448 | return psiPair; | |
1449 | } | |
1450 | //________________________________________________________________ | |
e156c3bb | 1451 | AliKFParticle *AliHFEV0cuts::CreateMotherParticle(AliVTrack const *pdaughter, AliVTrack const *ndaughter, Int_t pspec, Int_t nspec){ |
c04c80e6 | 1452 | // |
1453 | // Creates a mother particle | |
1454 | // | |
1455 | AliKFParticle pkfdaughter(*pdaughter, pspec); | |
1456 | AliKFParticle nkfdaughter(*ndaughter, nspec); | |
1457 | ||
1458 | // - check if the daughter particles are coming from the primary vertex | |
1459 | // - check the number of tracks that take part in the creaton of primary vertex. | |
1460 | // important: after removeal of candidate tracks there must be at least 2 tracks left | |
1461 | // otherwise the primary vertex will be corrupted | |
c2690925 | 1462 | |
c04c80e6 | 1463 | |
1464 | // Create the mother particle | |
1465 | AliKFParticle *m = new AliKFParticle(pkfdaughter, nkfdaughter); | |
c2690925 | 1466 | // important !!! |
1467 | m->SetField(fInputEvent->GetMagneticField()); | |
3a72645a | 1468 | if(TMath::Abs(kElectron) == pspec && TMath::Abs(kElectron) == nspec) m->SetMassConstraint(0, 0.001); |
1469 | else if(TMath::Abs(kPiPlus) == pspec && TMath::Abs(kPiPlus) == nspec) m->SetMassConstraint(TDatabasePDG::Instance()->GetParticle(kK0Short)->Mass(), 0.); | |
1470 | else if(TMath::Abs(kProton) == pspec && TMath::Abs(kPiPlus) == nspec) m->SetMassConstraint(TDatabasePDG::Instance()->GetParticle(kLambda0)->Mass(), 0.); | |
1471 | else if(TMath::Abs(kPiPlus) == pspec && TMath::Abs(kProton) == nspec) m->SetMassConstraint(TDatabasePDG::Instance()->GetParticle(kLambda0)->Mass(), 0.); | |
1472 | else{ | |
1473 | AliError("Wrong daughter ID - mass constraint can not be set"); | |
1474 | } | |
c04c80e6 | 1475 | |
1476 | AliKFVertex improvedVertex = *fPrimaryVertex; | |
1477 | improvedVertex += *m; | |
1478 | m->SetProductionVertex(improvedVertex); | |
1479 | ||
1480 | // update 15/06/2010 | |
1481 | // mother particle will not be added to primary vertex but only to its copy | |
1482 | // as this confilcts with calling | |
1483 | // m->SetPrimaryVertex() function and | |
1484 | // subsequently removing the mother particle afterwards | |
1485 | // Sourse: Sergey Gorbunov | |
1486 | ||
1487 | return m; | |
1488 | } | |
c04c80e6 | 1489 | //___________________________________________________________________ |
e156c3bb | 1490 | void AliHFEV0cuts::Armenteros(const AliESDv0 *v0, Float_t val[2]){ |
c04c80e6 | 1491 | // |
1492 | // computes the Armenteros variables for given V0 | |
1493 | // fills the histogram | |
1494 | // returns the values via "val" | |
1495 | // | |
1496 | ||
1497 | Double_t mn[3] = {0,0,0}; | |
1498 | Double_t mp[3] = {0,0,0}; | |
1499 | Double_t mm[3] = {0,0,0}; | |
1500 | ||
1501 | if(CheckSigns(v0)){ | |
1502 | v0->GetNPxPyPz(mn[0],mn[1],mn[2]); //reconstructed cartesian momentum components of negative daughter | |
1503 | v0->GetPPxPyPz(mp[0],mp[1],mp[2]); //reconstructed cartesian momentum components of positive daughter | |
1504 | } | |
1505 | else{ | |
1506 | v0->GetPPxPyPz(mn[0],mn[1],mn[2]); //reconstructed cartesian momentum components of negative daughter | |
1507 | v0->GetNPxPyPz(mp[0],mp[1],mp[2]); //reconstructed cartesian momentum components of positive daughter | |
1508 | } | |
1509 | v0->GetPxPyPz(mm[0],mm[1],mm[2]); //reconstructed cartesian momentum components of mother | |
1510 | ||
1511 | TVector3 vecN(mn[0],mn[1],mn[2]); | |
1512 | TVector3 vecP(mp[0],mp[1],mp[2]); | |
1513 | TVector3 vecM(mm[0],mm[1],mm[2]); | |
1514 | ||
1515 | Double_t thetaP = acos((vecP * vecM)/(vecP.Mag() * vecM.Mag())); | |
1516 | Double_t thetaN = acos((vecN * vecM)/(vecN.Mag() * vecM.Mag())); | |
1517 | ||
1518 | Double_t alfa = ((vecP.Mag())*cos(thetaP)-(vecN.Mag())*cos(thetaN))/ | |
1519 | ((vecP.Mag())*cos(thetaP)+(vecN.Mag())*cos(thetaN)) ; | |
1520 | Double_t qt = vecP.Mag()*sin(thetaP); | |
1521 | ||
1522 | val[0] = alfa; | |
1523 | val[1] = qt; | |
1524 | ||
1525 | } | |
1526 | //___________________________________________________________________ | |
e156c3bb | 1527 | Bool_t AliHFEV0cuts::CheckSigns(AliESDv0 const *v0){ |
c04c80e6 | 1528 | // |
1529 | // check wheter the sign was correctly applied to | |
1530 | // V0 daughter tracks | |
1531 | // | |
1532 | ||
1533 | Bool_t correct = kFALSE; | |
1534 | ||
1535 | Int_t pIndex = 0, nIndex = 0; | |
1536 | pIndex = v0->GetPindex(); | |
1537 | nIndex = v0->GetNindex(); | |
1538 | ||
1539 | AliESDtrack* d[2]; | |
1540 | d[0] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(pIndex)); | |
1541 | d[1] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(nIndex)); | |
1542 | ||
1543 | Int_t sign[2]; | |
1544 | sign[0] = (int)d[0]->GetSign(); | |
1545 | sign[1] = (int)d[1]->GetSign(); | |
1546 | ||
1547 | if(-1 == sign[0] && 1 == sign[1]){ | |
1548 | correct = kFALSE; | |
1549 | //v0->SetIndex(0, pIndex); // set the index of the negative v0 track | |
1550 | //v0->SetIndex(1, nIndex); // set the index of the positive v0 track | |
1551 | } | |
1552 | else{ | |
1553 | correct = kTRUE; | |
1554 | } | |
1555 | ||
1556 | //pIndex = v0->GetPindex(); | |
1557 | //nIndex = v0->GetNindex(); | |
1558 | //printf("-D2: P: %i, N: %i\n", pIndex, nIndex); | |
1559 | ||
1560 | return correct; | |
1561 | } | |
3a72645a | 1562 | //___________________________________________________________________ |
1563 | Bool_t AliHFEV0cuts::GetConvPosXY(AliESDtrack * const ptrack, AliESDtrack * const ntrack, Double_t convpos[2]){ | |
1564 | // | |
1565 | // recalculate the gamma conversion XY postition | |
1566 | // | |
1567 | ||
1568 | const Double_t b = fInputEvent->GetMagneticField(); | |
1569 | ||
1570 | Double_t helixcenterpos[2]; | |
1571 | GetHelixCenter(ptrack,b,ptrack->Charge(),helixcenterpos); | |
1572 | ||
1573 | Double_t helixcenterneg[2]; | |
1574 | GetHelixCenter(ntrack,b,ntrack->Charge(),helixcenterneg); | |
1575 | ||
1576 | Double_t poshelix[6]; | |
1577 | ptrack->GetHelixParameters(poshelix,b); | |
1578 | Double_t posradius = TMath::Abs(1./poshelix[4]); | |
1579 | ||
1580 | Double_t neghelix[6]; | |
1581 | ntrack->GetHelixParameters(neghelix,b); | |
1582 | Double_t negradius = TMath::Abs(1./neghelix[4]); | |
1583 | ||
1584 | Double_t xpos = helixcenterpos[0]; | |
1585 | Double_t ypos = helixcenterpos[1]; | |
1586 | Double_t xneg = helixcenterneg[0]; | |
1587 | Double_t yneg = helixcenterneg[1]; | |
1588 | ||
1589 | convpos[0] = (xpos*negradius + xneg*posradius)/(negradius+posradius); | |
1590 | convpos[1] = (ypos*negradius+ yneg*posradius)/(negradius+posradius); | |
1591 | ||
1592 | return 1; | |
1593 | } | |
1594 | //___________________________________________________________________ | |
1595 | Bool_t AliHFEV0cuts::GetHelixCenter(AliESDtrack * const track, Double_t b,Int_t charge, Double_t center[2]){ | |
1596 | // see header file for documentation | |
1597 | ||
1598 | Double_t pi = TMath::Pi(); | |
1599 | ||
1600 | Double_t helix[6]; | |
1601 | track->GetHelixParameters(helix,b); | |
1602 | ||
1603 | Double_t xpos = helix[5]; | |
1604 | Double_t ypos = helix[0]; | |
1605 | Double_t radius = TMath::Abs(1./helix[4]); | |
1606 | Double_t phi = helix[2]; | |
1607 | ||
1608 | if(phi < 0){ | |
1609 | phi = phi + 2*pi; | |
1610 | } | |
1611 | ||
1612 | phi -= pi/2.; | |
1613 | Double_t xpoint = radius * TMath::Cos(phi); | |
1614 | Double_t ypoint = radius * TMath::Sin(phi); | |
1615 | ||
1616 | if(b<0){ | |
1617 | if(charge > 0){ | |
1618 | xpoint = - xpoint; | |
1619 | ypoint = - ypoint; | |
1620 | } | |
e17c1f86 | 1621 | |
8c1c76e9 | 1622 | if(charge < 0){ |
1623 | xpoint = xpoint; | |
1624 | ypoint = ypoint; | |
1625 | } | |
3a72645a | 1626 | } |
1627 | if(b>0){ | |
8c1c76e9 | 1628 | if(charge > 0){ |
1629 | xpoint = xpoint; | |
1630 | ypoint = ypoint; | |
1631 | } | |
e17c1f86 | 1632 | |
3a72645a | 1633 | if(charge < 0){ |
1634 | xpoint = - xpoint; | |
1635 | ypoint = - ypoint; | |
1636 | } | |
1637 | } | |
1638 | center[0] = xpos + xpoint; | |
1639 | center[1] = ypos + ypoint; | |
1640 | ||
1641 | return 1; | |
1642 | } |