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00023 #include "SD0TagAlg/K0pipi.h"
00024 #include "SD0TagAlg/SingleBase.h"
00025
00026
00027 K0pipi::K0pipi()
00028 {}
00029
00030 K0pipi::~K0pipi()
00031 {}
00032
00033
00034 void K0pipi::MTotal(double event,SmartDataPtr<EvtRecTrackCol> evtRecTrkCol, Vint iGood,Vint
00035 iGam, double Ebeam, int PID_flag, int Charge_candidate_D)
00036 {
00037
00038 int nGood=iGood.size();
00039 int nGam=iGam.size();
00040
00041 iGoodtag.clear();
00042 iGamtag.clear();
00043
00044 double mass_bcgg,delE_tag_temp;
00045 int m_chargetag,m_chargepi1,m_chargepi2,m_chargepi3,m_chargepi4;
00046 int ipi1_temp,ipi2_temp,ipi3_temp,ipi4_temp;
00047 HepLorentzVector pddd;
00048 HepLorentzVector pddd_temp;
00049
00050 IDataProviderSvc* eventSvc = NULL;
00051 Gaudi::svcLocator()->service("EventDataSvc", eventSvc);
00052 SmartDataPtr<EvtRecEvent> evtRecEvent(eventSvc,EventModel::EvtRec::EvtRecEvent);
00053 SmartDataPtr<Event::EventHeader> eventHeader(eventSvc,"/Event/EventHeader");
00054
00055 int runNo=eventHeader->runNumber();
00056 int rec=eventHeader->eventNumber();
00057
00058 double xecm=2*Ebeam;
00059
00060 k0pipimd=false;
00061 double tagmode=0;
00062
00063 if((evtRecEvent->totalCharged() < 4)){ return; }
00064
00065 double ecms = xecm;
00066
00067 ISimplePIDSvc* simple_pid;
00068 Gaudi::svcLocator()->service("SimplePIDSvc", simple_pid);
00069
00070 double deltaE_tem = 0.20;
00071 int ncount1 = 0;
00072
00073 Hep3Vector xorigin(0,0,0);
00074 HepSymMatrix xoriginEx(3,0);
00075 IVertexDbSvc* vtxsvc;
00076 Gaudi::svcLocator()->service("VertexDbSvc", vtxsvc);
00077 if(vtxsvc->isVertexValid())
00078 {
00079 double* dbv = vtxsvc->PrimaryVertex();
00080 double* vv = vtxsvc->SigmaPrimaryVertex();
00081 xorigin.setX(dbv[0]);
00082 xorigin.setY(dbv[1]);
00083 xorigin.setZ(dbv[2]);
00084
00085 xoriginEx[0][0] = vv[0] * vv[0];
00086 xoriginEx[1][1] = vv[1] * vv[1];
00087 xoriginEx[2][2] = vv[2] * vv[2];
00088
00089 }
00090
00091 double xv=xorigin.x();
00092 double yv=xorigin.y();
00093 double zv=xorigin.z();
00094
00095 HepPoint3D point0(0.,0.,0.);
00096 HepPoint3D IP(xorigin[0],xorigin[1],xorigin[2]);
00098
00099 for(int i = 0; i < evtRecEvent->totalCharged(); i++) {
00100 EvtRecTrackIterator itTrk = evtRecTrkCol->begin() + i;
00101
00102 int ipi1= (*itTrk)->trackId();
00103
00104 if(!(*itTrk)->isMdcKalTrackValid()) continue;
00105 RecMdcKalTrack* mdcKalTrk1 = (*itTrk)->mdcKalTrack();
00106 RecMdcKalTrack::setPidType(RecMdcKalTrack::pion);
00107
00108 m_chargepi1=mdcKalTrk1->charge();
00109 if(m_chargepi1 != 1) continue;
00110
00112 HepVector a1 = mdcKalTrk1->getZHelix();
00113 HepSymMatrix Ea1 = mdcKalTrk1->getZError();
00114
00115 VFHelix helixip3_1(point0,a1,Ea1);
00116 helixip3_1.pivot(IP);
00117 HepVector vecipa1 = helixip3_1.a();
00118
00119 double dr1 = fabs(vecipa1[0]);
00120 double dz1 = fabs(vecipa1[3]);
00121 double costheta1 = cos(mdcKalTrk1->theta());
00122
00123 if ( dr1 >= 15.0) continue;
00124 if ( dz1 >= 25.0) continue;
00125 if ( fabs(costheta1) >= 0.93) continue;
00127 WTrackParameter pip1(xmass[2],mdcKalTrk1->getZHelix(),mdcKalTrk1->getZError() );
00128
00129
00130
00131
00132 for(int j = 0; j < evtRecEvent->totalCharged(); j++) {
00133 EvtRecTrackIterator itTrk = evtRecTrkCol->begin() + j;
00134
00135 int ipi2= (*itTrk)->trackId();
00136 if(ipi1==ipi2) continue;
00137
00138 if(!(*itTrk)->isMdcKalTrackValid()) continue;
00139 RecMdcKalTrack* mdcKalTrk2 = (*itTrk)->mdcKalTrack();
00140 RecMdcKalTrack::setPidType(RecMdcKalTrack::pion);
00141
00142 m_chargepi2=mdcKalTrk2->charge();
00143 if((m_chargepi2 + m_chargepi1) != 0) continue;
00144
00146 HepVector a2 = mdcKalTrk2->getZHelix();
00147 HepSymMatrix Ea2 = mdcKalTrk2->getZError();
00148 VFHelix helixip3_2(point0,a2,Ea2);
00149 helixip3_2.pivot(IP);
00150 HepVector vecipa2 = helixip3_2.a();
00151
00152 double dr2 = fabs(vecipa2[0]);
00153 double dz2 = fabs(vecipa2[3]);
00154 double costheta2 = cos(mdcKalTrk2->theta());
00155 if ( dr2 >= 15.0) continue;
00156 if ( dz2 >= 25.0) continue;
00157 if ( fabs(costheta2) >= 0.93) continue;
00159 WTrackParameter pim1(xmass[2],mdcKalTrk2->getZHelix(),mdcKalTrk2->getZError() );
00160
00161
00162 HepVector pip1_val = HepVector(7,0);
00163 HepVector pim1_val = HepVector(7,0);
00164 pip1_val = pip1.w();
00165 pim1_val = pim1.w();
00166 HepLorentzVector ptrktagk0(pip1_val[0]+pim1_val[0],pip1_val[1]+pim1_val[1],pip1_val[2]+pim1_val[2],pip1_val[3]+pim1_val[3]);
00167 if(fabs(ptrktagk0.m()-0.498)>0.1) continue;
00168
00169 HepPoint3D vx(xorigin.x(), xorigin.y(), xorigin.z());
00170 HepSymMatrix Evx(3, 0);
00171 double bx = 1E+6; Evx[0][0] = bx*bx;
00172 double by = 1E+6; Evx[1][1] = by*by;
00173 double bz = 1E+6; Evx[2][2] = bz*bz;
00174 VertexParameter vxpar; vxpar.setVx(vx); vxpar.setEvx(Evx);
00175
00176 VertexFit *vtxfit0 = VertexFit::instance();
00177 vtxfit0->init();
00178 vtxfit0->AddTrack(0, pip1);
00179 vtxfit0->AddTrack(1, pim1);
00180 vtxfit0->AddVertex(0, vxpar, 0, 1);
00181 if(!(vtxfit0->Fit(0))) continue;
00182 vtxfit0->Swim(0);
00183 vtxfit0->BuildVirtualParticle(0);
00184 WTrackParameter wksp = vtxfit0->wtrk(0);
00185 WTrackParameter wksm = vtxfit0->wtrk(1);
00186 WTrackParameter wks_Trk = vtxfit0->wVirtualTrack(0);
00187 VertexParameter wks_var = vtxfit0->vpar(0);
00188
00189
00190
00191
00192 for(int k = 0; k < evtRecEvent->totalCharged(); k++) {
00193 EvtRecTrackIterator itTrk = evtRecTrkCol->begin() + k;
00194
00195 int ipi3= (*itTrk)->trackId();
00196 if(ipi2==ipi3 || ipi1==ipi3) continue;
00197
00198 if(!(*itTrk)->isMdcKalTrackValid()) continue;
00199 RecMdcKalTrack* mdcKalTrk3 = (*itTrk)->mdcKalTrack();
00200 RecMdcKalTrack::setPidType(RecMdcKalTrack::pion);
00201
00202 m_chargepi3=mdcKalTrk3->charge();
00203 if((m_chargepi3) != 1) continue;
00204
00206 HepVector a3 = mdcKalTrk3->getZHelix();
00207 HepSymMatrix Ea3 = mdcKalTrk3->getZError();
00208 VFHelix helixip3_3(point0,a3,Ea3);
00209 helixip3_3.pivot(IP);
00210 HepVector vecipa3 = helixip3_3.a();
00211
00212 double dr3 = fabs(vecipa3[0]);
00213 double dz3 = fabs(vecipa3[3]);
00214 double costheta3 = cos(mdcKalTrk3->theta());
00215 if ( dr3 >= 1.0) continue;
00216 if ( dz3 >= 10.0) continue;
00217 if ( fabs(costheta3) >= 0.93) continue;
00219 if(PID_flag == 5) {
00220 simple_pid->preparePID(*itTrk);
00221 if(simple_pid->probPion() < 0.0 || simple_pid->probPion() < simple_pid->probKaon()) continue;
00222 }
00224 WTrackParameter pip2(xmass[2],mdcKalTrk3->getZHelix(),mdcKalTrk3->getZError() );
00225
00226
00227
00228
00229 for(int l = 0; l< evtRecEvent->totalCharged(); l++) {
00230 EvtRecTrackIterator itTrk = evtRecTrkCol->begin() + l;
00231
00232 int ipi4= (*itTrk)->trackId();
00233 if(ipi4==ipi3 || ipi4==ipi2 || ipi4 ==ipi1) continue;
00234
00235 if(!(*itTrk)->isMdcKalTrackValid()) continue;
00236 RecMdcKalTrack* mdcKalTrk4 = (*itTrk)->mdcKalTrack();
00237 RecMdcKalTrack::setPidType(RecMdcKalTrack::pion);
00238
00239 m_chargepi4=mdcKalTrk4->charge();
00240 if((m_chargepi4 + m_chargepi3) != 0) continue;
00241
00243 HepVector a4 = mdcKalTrk4->getZHelix();
00244 HepSymMatrix Ea4 = mdcKalTrk4->getZError();
00245 VFHelix helixip3_4(point0,a4,Ea4);
00246 helixip3_4.pivot(IP);
00247 HepVector vecipa4 = helixip3_4.a();
00248
00249 double dr4 = fabs(vecipa4[0]);
00250 double dz4 = fabs(vecipa4[3]);
00251 double costheta4 = cos(mdcKalTrk4->theta());
00252 if ( dr4 >= 1.0) continue;
00253 if ( dz4 >= 10.0) continue;
00254 if ( fabs(costheta4) >= 0.93) continue;
00256 if(PID_flag == 5) {
00257 simple_pid->preparePID(*itTrk);
00258 if(simple_pid->probPion() < 0.0 || simple_pid->probPion() < simple_pid->probKaon()) continue;
00259 }
00261 WTrackParameter pim2(xmass[2],mdcKalTrk4->getZHelix(),mdcKalTrk4->getZError() );
00262
00263
00264
00265 VertexFit* vtxfit_2 = VertexFit::instance();
00266 vtxfit_2->init();
00267 vtxfit_2->AddTrack(0, pip2);
00268 vtxfit_2->AddTrack(1, pim2);
00269 vtxfit_2->AddVertex(0, vxpar, 0, 1);
00270 if(!vtxfit_2->Fit(0)) continue;
00271 vtxfit_2->Swim(0);
00272
00273 WTrackParameter wpip2 = vtxfit_2->wtrk(0);
00274 WTrackParameter wpim2 = vtxfit_2->wtrk(1);
00275
00276 SecondVertexFit *vtxfit = SecondVertexFit::instance();
00277 vtxfit->init();
00278 vxpar.setEvx(xoriginEx);
00279 vtxfit->setPrimaryVertex(vxpar);
00280 vtxfit->AddTrack(0, wks_Trk);
00281 vtxfit->setVpar(wks_var);
00282 if(!vtxfit->Fit()) continue;
00283
00284 if(vtxfit->chisq() >999.) continue;
00285 if(vtxfit->decayLength()<0.0) continue;
00286
00287 double m_massks1_tem = vtxfit->p4par().m();
00288 if(m_massks1_tem < 0.485 || m_massks1_tem > 0.515) continue;
00289 HepLorentzVector p4kstag = vtxfit->p4par();
00290 WTrackParameter para_ks = vtxfit0->wVirtualTrack(0);
00291 WTrackParameter wksz = vtxfit->wpar();
00292
00293 HepVector pip2_val = HepVector(7,0);
00294 HepVector pim2_val = HepVector(7,0);
00295 HepVector ksp_val = HepVector(7,0);
00296 HepVector ksm_val = HepVector(7,0);
00297
00298 pip2_val = wpip2.w();
00299 pim2_val = wpim2.w();
00300 ksp_val = wksp.w();
00301 ksm_val = wksm.w();
00302
00303 HepLorentzVector P_PIP2(pip2_val[0],pip2_val[1],pip2_val[2],pip2_val[3]);
00304 HepLorentzVector P_PIM2(pim2_val[0],pim2_val[1],pim2_val[2],pim2_val[3]);
00305 HepLorentzVector P_KSP(ksp_val[0],ksp_val[1],ksp_val[2],ksp_val[3]);
00306 HepLorentzVector P_KSM(ksm_val[0],ksm_val[1],ksm_val[2],ksm_val[3]);
00307
00308 p4kstag.boost(-0.011,0,0);
00309 P_PIP2.boost(-0.011,0,0);
00310 P_PIM2.boost(-0.011,0,0);
00311 P_KSP.boost(-0.011,0,0);
00312 P_KSM.boost(-0.011,0,0);
00313
00314 pddd = p4kstag + P_PIP2 + P_PIM2;
00315
00316 double pk0pipi=pddd.rho();
00317
00318 double temp1 = (ecms/2)*(ecms/2)-pk0pipi*pk0pipi ;
00319 if(temp1<0) temp1 =0;
00320 double mass_bc_tem = sqrt(temp1);
00321 if(mass_bc_tem < 1.82 || mass_bc_tem > 1.89) continue;
00322
00323 double delE_tag_tag = ecms/2-pddd.e();
00324
00325 if(fabs(delE_tag_tag)<deltaE_tem){
00326 deltaE_tem = fabs(delE_tag_tag);
00327 delE_tag_temp = delE_tag_tag;
00328 mass_bcgg = mass_bc_tem;
00329
00330 pddd_temp = pddd;
00331
00332 ipi1_temp=ipi1;
00333 ipi2_temp=ipi2;
00334 ipi3_temp=ipi3;
00335 ipi4_temp=ipi4;
00336
00337 ncount1 = 1;
00338
00339 }
00340 }
00341 }
00342 }
00343 }
00344
00345
00346 if(ncount1 == 1){
00347 tagmode=14;
00348 if(m_chargetag<0) tagmode=-14;
00349 tagmd=tagmode;
00350 mass_bc = mass_bcgg;
00351 delE_tag = delE_tag_temp;
00352 cqtm = 0.0;
00353
00354 iGoodtag.push_back(ipi1_temp);
00355 iGoodtag.push_back(ipi2_temp);
00356 iGoodtag.push_back(ipi3_temp);
00357 iGoodtag.push_back(ipi4_temp);
00358 iGamtag.push_back(9999);
00359 iGamtag.push_back(9999);
00360 iGamtag.push_back(9999);
00361 iGamtag.push_back(9999);
00362
00363 ptag = pddd_temp;
00364
00365 k0pipimd=true;
00366 }
00367
00368 }
00369
00370
00371