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00023 #include "SD0TagAlg/Kpipi0.h"
00024 #include "SD0TagAlg/SingleBase.h"
00025
00026 Kpipi0::Kpipi0()
00027 {}
00028
00029 Kpipi0::~Kpipi0()
00030 {}
00031
00032
00033 void Kpipi0::MTotal(double event,SmartDataPtr<EvtRecTrackCol> evtRecTrkCol, Vint iGood,Vint
00034 iGam, double Ebeam, int PID_flag, int Charge_candidate_D)
00035 {
00036
00037 int nGood=iGood.size();
00038 int nGam=iGam.size();
00039
00040 iGoodtag.clear();
00041 iGamtag.clear();
00042
00043 double mass_bcgg,delE_tag_temp;
00044 int m_chargetag, m_chargek,m_chargepi;
00045 int ika_temp,ipi_temp, iGam1_temp, iGam2_temp;
00046 HepLorentzVector pddd, pddd_temp;
00047
00048 int cqtm_temp;
00049 IDataProviderSvc* eventSvc = NULL;
00050 Gaudi::svcLocator()->service("EventDataSvc", eventSvc);
00051 SmartDataPtr<EvtRecEvent> evtRecEvent(eventSvc,EventModel::EvtRec::EvtRecEvent);
00052 SmartDataPtr<Event::EventHeader> eventHeader(eventSvc,"/Event/EventHeader");
00053
00054 int runNo=eventHeader->runNumber();
00055 int rec=eventHeader->eventNumber();
00056
00057 double xecm=2*Ebeam;
00058
00059 kpipi0md=false;
00060 double tagmode=0;
00061
00062 if((evtRecEvent->totalCharged() < 2||nGam<2)){ return; }
00063
00064 double ecms = xecm;
00065
00066 ISimplePIDSvc* simple_pid;
00067 Gaudi::svcLocator()->service("SimplePIDSvc", simple_pid);
00068
00069 double deltaE_tem = 0.20;
00070 int ncount1 = 0;
00071
00072 Hep3Vector xorigin(0,0,0);
00073 IVertexDbSvc* vtxsvc;
00074 Gaudi::svcLocator()->service("VertexDbSvc", vtxsvc);
00075 if(vtxsvc->isVertexValid())
00076 {
00077 double* dbv = vtxsvc->PrimaryVertex();
00078 double* vv = vtxsvc->SigmaPrimaryVertex();
00079 xorigin.setX(dbv[0]);
00080 xorigin.setY(dbv[1]);
00081 xorigin.setZ(dbv[2]);
00082 }
00083
00084
00085 double xv=xorigin.x();
00086 double yv=xorigin.y();
00087 double zv=xorigin.z();
00088
00089 HepPoint3D point0(0.,0.,0.);
00090 HepPoint3D IP(xorigin[0],xorigin[1],xorigin[2]);
00091
00092 HepLorentzVector ptrk1_temp, ptrk2_temp, ptrk3_temp, ptrk4_temp, ptrk5_temp;
00094 HepLorentzVector p2gfit;
00095 HepLorentzVector p2gg;
00096 for(int i = 0; i < evtRecEvent->totalCharged(); i++) {
00097 EvtRecTrackIterator itTrk = evtRecTrkCol->begin() + i;
00098
00099 int ika= (*itTrk)->trackId();
00100
00101 if(!(*itTrk)->isMdcKalTrackValid()) continue;
00102 RecMdcKalTrack* mdcKalTrk1 = (*itTrk)->mdcKalTrack();
00103 RecMdcKalTrack::setPidType(RecMdcKalTrack::kaon);
00105 m_chargek=mdcKalTrk1->charge();
00106 if(Charge_candidate_D != 0) {
00107 if(m_chargek != -Charge_candidate_D) continue;
00108 }
00109 if(Charge_candidate_D == 0) {
00110 if(abs(m_chargek) != 1) continue;
00111 }
00113 HepVector a1 = mdcKalTrk1->getZHelixK();
00114 HepSymMatrix Ea1 = mdcKalTrk1->getZErrorK();
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 if ( dr1 >= 1.0) continue;
00123 if ( dz1 >= 10.0) continue;
00124 if ( fabs(costheta1) >= 0.93) continue;
00125
00127 if(PID_flag == 5) {
00128 simple_pid->preparePID(*itTrk);
00129 if(simple_pid->probKaon() < 0.0 || simple_pid->probKaon() < simple_pid->probPion()) continue;
00130 }
00132
00133 WTrackParameter kam(xmass[3],mdcKalTrk1->getZHelixK(),mdcKalTrk1->getZErrorK() );
00134
00135
00136
00137
00138 for(int j = 0; j< evtRecEvent->totalCharged();j++) {
00139 EvtRecTrackIterator itTrk = evtRecTrkCol->begin() + j;
00140
00141 int ipi= (*itTrk)->trackId();
00142 if(ipi==ika) continue;
00143
00144 if(!(*itTrk)->isMdcKalTrackValid()) continue;
00145 RecMdcKalTrack* mdcKalTrk2 = (*itTrk)->mdcKalTrack();
00146 RecMdcKalTrack::setPidType(RecMdcKalTrack::pion);
00148 m_chargepi=mdcKalTrk2->charge();
00149 if((m_chargek + m_chargepi) != 0) continue;
00151 HepVector a2 = mdcKalTrk2->getZHelix();
00152 HepSymMatrix Ea2 = mdcKalTrk2->getZError();
00153 VFHelix helixip3_2(point0,a2,Ea2);
00154 helixip3_2.pivot(IP);
00155 HepVector vecipa2 = helixip3_2.a();
00156
00157 double dr2 = fabs(vecipa2[0]);
00158 double dz2 = fabs(vecipa2[3]);
00159 double costheta2 = cos(mdcKalTrk2->theta());
00160 if ( dr2 >= 1.0) continue;
00161 if ( dz2 >= 10.0) continue;
00162 if ( fabs(costheta2) >= 0.93) continue;
00164 if(PID_flag == 5) {
00165 simple_pid->preparePID(*itTrk);
00166 if(simple_pid->probPion() < 0.0 || simple_pid->probPion() < simple_pid->probKaon()) continue;
00167 }
00169
00170 WTrackParameter pip(xmass[2],mdcKalTrk2->getZHelix(),mdcKalTrk2->getZError() );
00171
00172 for(int m = 0; m < nGam-1; m++) {
00173 if(iGam[m]==-1) continue;
00174 RecEmcShower *g1Trk = (*(evtRecTrkCol->begin()+iGam[m]))->emcShower();
00175 double eraw1 = g1Trk->energy();
00176 double phi1 = g1Trk->phi();
00177 double the1 = g1Trk->theta();
00178 HepLorentzVector ptrkg1,ptrkg10,ptrkg12;
00179 ptrkg1.setPx(eraw1*sin(the1)*cos(phi1));
00180 ptrkg1.setPy(eraw1*sin(the1)*sin(phi1));
00181 ptrkg1.setPz(eraw1*cos(the1));
00182 ptrkg1.setE(eraw1);
00183 ptrkg10 = ptrkg1;
00184 ptrkg12 = ptrkg1.boost(-0.011,0,0);
00185
00186 for(int n = m+1; n < nGam; n++) {
00187 if(iGam[n]==-1) continue;
00188 RecEmcShower *g2Trk = (*(evtRecTrkCol->begin()+iGam[n]))->emcShower();
00189 double eraw2 = g2Trk->energy();
00190 double phi2 = g2Trk->phi();
00191 double the2 = g2Trk->theta();
00192 HepLorentzVector ptrkg2,ptrkg20,ptrkg22;
00193 ptrkg2.setPx(eraw2*sin(the2)*cos(phi2));
00194 ptrkg2.setPy(eraw2*sin(the2)*sin(phi2));
00195 ptrkg2.setPz(eraw2*cos(the2));
00196 ptrkg2.setE(eraw2);
00197 ptrkg20 = ptrkg2;
00198 ptrkg22 = ptrkg2.boost(-0.011,0,0);
00199
00201 HepLorentzVector ptrkpi0;
00202 ptrkpi0 = ptrkg12+ptrkg22;
00203 double m_xmpi0_tem = ptrkpi0.m();
00204 if(m_xmpi0_tem>0.150||m_xmpi0_tem<0.115) continue;
00206 bool IsEndcap1 = false; bool IsEndcap2 = false;
00207 if(fabs(cos(the1)) > 0.86 && fabs(cos(the1)) < 0.92) IsEndcap1 = true;
00208 if(fabs(cos(the2)) > 0.86 && fabs(cos(the2)) < 0.92) IsEndcap2 = true;
00209 if(IsEndcap1 && IsEndcap2) continue;
00211 KalmanKinematicFit * kmfit = KalmanKinematicFit::instance();
00212 kmfit->init();
00213 kmfit->setChisqCut(2500);
00214 kmfit->AddTrack(0, 0.0, g1Trk);
00215 kmfit->AddTrack(1, 0.0, g2Trk);
00216 kmfit->AddResonance(0, mpi0, 0, 1);
00217
00218 kmfit->Fit(0);
00219 kmfit->BuildVirtualParticle(0);
00220
00221 double pi0_chisq = kmfit->chisq(0);
00222 if ( pi0_chisq >= 2500) continue;
00223 HepLorentzVector p2gfit = kmfit->pfit(0) + kmfit->pfit(1);
00224 p2gfit.boost(-0.011,0,0);
00225
00227 HepPoint3D vx(xorigin.x(), xorigin.y(), xorigin.z());
00228 HepSymMatrix Evx(3, 0);
00229 double bx = 1E+6; Evx[0][0] = bx*bx;
00230 double by = 1E+6; Evx[1][1] = by*by;
00231 double bz = 1E+6; Evx[2][2] = bz*bz;
00232 VertexParameter vxpar; vxpar.setVx(vx); vxpar.setEvx(Evx);
00234
00235 VertexFit* vtxfit = VertexFit::instance();
00236 vtxfit->init();
00237 vtxfit->AddTrack(0, kam);
00238 vtxfit->AddTrack(1, pip);
00239 vtxfit->AddVertex(0, vxpar, 0, 1);
00240 if(!vtxfit->Fit(0)) continue;
00241 vtxfit->Swim(0);
00242
00243 WTrackParameter wkam = vtxfit->wtrk(0);
00244 WTrackParameter wpip = vtxfit->wtrk(1);
00245
00246 HepVector kam_val = HepVector(7,0);
00247 kam_val = wkam.w();
00248 HepVector pip_val = HepVector(7,0);
00249 pip_val = wpip.w();
00250
00251 HepLorentzVector P_KAM(kam_val[0],kam_val[1],kam_val[2],kam_val[3]);
00252 HepLorentzVector P_PIP(pip_val[0],pip_val[1],pip_val[2],pip_val[3]);
00253
00254 P_KAM.boost(-0.011,0,0);
00255 P_PIP.boost(-0.011,0,0);
00256 pddd = P_KAM + P_PIP + p2gfit;
00257
00258 double pkpipi0=pddd.rho();
00259
00260 double temp1 = (ecms/2)*(ecms/2)-pkpipi0*pkpipi0 ;
00261 if(temp1<0) temp1 =0;
00262 double mass_bc_tem = sqrt(temp1);
00263 if(mass_bc_tem < 1.82 || mass_bc_tem > 1.89) continue;
00264
00265 double delE_tag_tag = ecms/2-pddd.e();
00266
00267
00268 if(fabs(delE_tag_tag)<deltaE_tem) {
00269 deltaE_tem = fabs(delE_tag_tag);
00270 delE_tag_temp = delE_tag_tag;
00271 mass_bcgg = mass_bc_tem;
00272
00273 pddd_temp = pddd;
00274 cqtm_temp = m_chargek;
00275
00276 ika_temp=ika;
00277 ipi_temp=ipi;
00278
00279 iGam1_temp = iGam[m];
00280 iGam2_temp = iGam[n];
00281 ncount1 = 1;
00282
00283 }
00284 }
00285 }
00286 }
00287 }
00288
00289 if(ncount1 == 1){
00290 tagmode=12;
00291 if(cqtm_temp <0) tagmode=-12;
00292 tagmd=tagmode;
00293 mass_bc = mass_bcgg;
00294 delE_tag = delE_tag_temp;
00295 cqtm = -1.0*cqtm_temp;
00296
00297 iGoodtag.push_back(ipi_temp);
00298 iGoodtag.push_back(ika_temp);
00299
00300 iGamtag.push_back(iGam1_temp);
00301 iGamtag.push_back(iGam2_temp);
00302 iGamtag.push_back(9999);
00303 iGamtag.push_back(9999);
00304
00305 ptag = pddd_temp;
00306
00307 kpipi0md = true;
00308
00309 }
00310 }
00311
00312
00313