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00023 #include "SD0TagAlg/K0kpi.h"
00024 #include "SD0TagAlg/SingleBase.h"
00025
00026
00027 K0kpi::K0kpi()
00028 {}
00029
00030 K0kpi::~K0kpi()
00031 {}
00032
00033
00034 void K0kpi::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_chargek,m_chargepi3;
00046 int ik1_temp,ipi1_temp,ipi2_temp,ipi3_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 k0kpimd=false;
00061 double tagmode=0;
00062
00063
00064 if((evtRecEvent->totalCharged() < 4)){ return; }
00065
00066 double ecms = xecm;
00067
00068 ISimplePIDSvc* simple_pid;
00069 Gaudi::svcLocator()->service("SimplePIDSvc", simple_pid);
00070
00071 double deltaE_tem = 0.20;
00072 int ncount1 = 0;
00073
00074 Hep3Vector xorigin(0,0,0);
00075 HepSymMatrix xoriginEx(3,0);
00076 IVertexDbSvc* vtxsvc;
00077 Gaudi::svcLocator()->service("VertexDbSvc", vtxsvc);
00078 if(vtxsvc->isVertexValid())
00079 {
00080 double* dbv = vtxsvc->PrimaryVertex();
00081 double* vv = vtxsvc->SigmaPrimaryVertex();
00082 xorigin.setX(dbv[0]);
00083 xorigin.setY(dbv[1]);
00084 xorigin.setZ(dbv[2]);
00085
00086 xoriginEx[0][0] = vv[0] * vv[0];
00087 xoriginEx[1][1] = vv[1] * vv[1];
00088 xoriginEx[2][2] = vv[2] * vv[2];
00089
00090 }
00091
00092 double xv=xorigin.x();
00093 double yv=xorigin.y();
00094 double zv=xorigin.z();
00095
00096 HepPoint3D point0(0.,0.,0.);
00097 HepPoint3D IP(xorigin[0],xorigin[1],xorigin[2]);
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 pip(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 pim(xmass[2],mdcKalTrk2->getZHelix(),mdcKalTrk2->getZError() );
00160
00161 HepVector pip_val = HepVector(7,0);
00162 HepVector pim_val = HepVector(7,0);
00163 pip_val = pip.w();
00164 pim_val = pim.w();
00165 HepLorentzVector ptrktagk0(pip_val[0]+pim_val[0],pip_val[1]+pim_val[1],pip_val[2]+pim_val[2],pip_val[3]+pim_val[3]);
00166 double m_xmtagk0_tem = ptrktagk0.mag();
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, pip);
00179 vtxfit0->AddTrack(1, pim);
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 for(int k = 0; k < evtRecEvent->totalCharged(); k++) {
00192 EvtRecTrackIterator itTrk = evtRecTrkCol->begin() + k;
00193
00194 int ik1 = (*itTrk)->trackId();
00195 if(ipi2==ik1 || ipi1==ik1) continue;
00196
00197 if(!(*itTrk)->isMdcKalTrackValid()) continue;
00198 RecMdcKalTrack* mdcKalTrk3 = (*itTrk)->mdcKalTrack();
00199 RecMdcKalTrack::setPidType(RecMdcKalTrack::kaon);
00200
00201 m_chargek = mdcKalTrk3->charge();
00202 if(abs(m_chargek) != 1) continue;
00203
00205 HepVector a3 = mdcKalTrk3->getZHelixK();
00206 HepSymMatrix Ea3 = mdcKalTrk3->getZErrorK();
00207 VFHelix helixip3_3(point0,a3,Ea3);
00208 helixip3_3.pivot(IP);
00209 HepVector vecipa3 = helixip3_3.a();
00210
00211 double dr3 = fabs(vecipa3[0]);
00212 double dz3 = fabs(vecipa3[3]);
00213 double costheta3 = cos(mdcKalTrk3->theta());
00214 if ( dr3 >= 1.0) continue;
00215 if ( dz3 >= 10.0) continue;
00216 if ( fabs(costheta3) >= 0.93) continue;
00218 if(PID_flag == 5) {
00219 simple_pid->preparePID(*itTrk);
00220 if(simple_pid->probKaon() < 0.0 || simple_pid->probKaon() < simple_pid->probPion()) continue;
00221 }
00223 WTrackParameter ka(xmass[3],mdcKalTrk3->getZHelixK(),mdcKalTrk3->getZErrorK());
00224
00225
00226
00227
00228 for(int l = 0; l < evtRecEvent->totalCharged(); l++) {
00229 EvtRecTrackIterator itTrk = evtRecTrkCol->begin() + l;
00230
00231 int ipi3= (*itTrk)->trackId();
00232 if(ipi3==ik1 || ipi3==ipi2 || ipi3 ==ipi1) continue;
00233
00234 if(!(*itTrk)->isMdcKalTrackValid()) continue;
00235 RecMdcKalTrack* mdcKalTrk4 = (*itTrk)->mdcKalTrack();
00236 RecMdcKalTrack::setPidType(RecMdcKalTrack::pion);
00237
00238 m_chargepi3 = mdcKalTrk4->charge();
00239 if((m_chargepi3 + m_chargek) != 0) continue;
00240
00242 HepVector a4 = mdcKalTrk4->getZHelix();
00243 HepSymMatrix Ea4 = mdcKalTrk4->getZError();
00244 VFHelix helixip3_4(point0,a4,Ea4);
00245 helixip3_4.pivot(IP);
00246 HepVector vecipa4 = helixip3_4.a();
00247
00248 double dr4 = fabs(vecipa4[0]);
00249 double dz4 = fabs(vecipa4[3]);
00250 double costheta4 = cos(mdcKalTrk4->theta());
00251 if ( dr4 >= 1.0) continue;
00252 if ( dz4 >= 10.0) continue;
00253 if ( fabs(costheta4) >= 0.93) continue;
00255 if(PID_flag == 5) {
00256 simple_pid->preparePID(*itTrk);
00257 if(simple_pid->probPion() < 0.0 || simple_pid->probPion() < simple_pid->probKaon()) continue;
00258 }
00260 WTrackParameter pi(xmass[2],mdcKalTrk4->getZHelix(),mdcKalTrk4->getZError() );
00261
00262 VertexFit* vtxfit_2 = VertexFit::instance();
00263 vtxfit_2->init();
00264 vtxfit_2->AddTrack(0, ka);
00265 vtxfit_2->AddTrack(1, pi);
00266 vtxfit_2->AddVertex(0, vxpar, 0, 1);
00267 if(!vtxfit_2->Fit(0)) continue;
00268 vtxfit_2->Swim(0);
00269
00270 WTrackParameter wka = vtxfit_2->wtrk(0);
00271 WTrackParameter wpi = vtxfit_2->wtrk(1);
00272
00273 SecondVertexFit *vtxfit = SecondVertexFit::instance();
00274 vtxfit->init();
00275 vxpar.setEvx(xoriginEx);
00276 vtxfit->setPrimaryVertex(vxpar);
00277 vtxfit->AddTrack(0, wks_Trk);
00278 vtxfit->setVpar(wks_var);
00279 if(!vtxfit->Fit()) continue;
00280
00281 if(vtxfit->chisq() > 999.) continue;
00282 if(vtxfit->decayLength()<0.0) continue;
00283
00284 double m_massks1_tem = vtxfit->p4par().m();
00285 if(m_massks1_tem < 0.485 || m_massks1_tem > 0.515) continue;
00286 HepLorentzVector p4kstag = vtxfit->p4par();
00287 WTrackParameter para_ks = vtxfit0->wVirtualTrack(0);
00288
00289 HepVector ka_val = HepVector(7,0);
00290 HepVector pi_val = HepVector(7,0);
00291 HepVector ksp_val = HepVector(7,0);
00292 HepVector ksm_val = HepVector(7,0);
00293
00294 ka_val = wka.w();
00295 pi_val = wpi.w();
00296 ksp_val = wksp.w();
00297 ksm_val = wksm.w();
00298
00299 HepLorentzVector P_KA(ka_val[0],ka_val[1],ka_val[2],ka_val[3]);
00300 HepLorentzVector P_PI(pi_val[0],pi_val[1],pi_val[2],pi_val[3]);
00301 HepLorentzVector P_KSP(ksp_val[0],ksp_val[1],ksp_val[2],ksp_val[3]);
00302 HepLorentzVector P_KSM(ksm_val[0],ksm_val[1],ksm_val[2],ksm_val[3]);
00303
00304 P_KA.boost(-0.011,0,0);
00305 P_PI.boost(-0.011,0,0);
00306 P_KSP.boost(-0.011,0,0);
00307 P_KSM.boost(-0.011,0,0);
00308
00309 p4kstag.boost(-0.011,0,0);
00310
00311 pddd = P_KA + P_PI + p4kstag;
00312
00313 double pk0kpi=pddd.rho();
00314
00315 double temp1 = (ecms/2)*(ecms/2)-pk0kpi*pk0kpi ;
00316 if(temp1<0) temp1 =0;
00317 double mass_bc_tem = sqrt(temp1);
00318 if(mass_bc_tem < 1.82 || mass_bc_tem > 1.89) continue;
00319
00320 double delE_tag_tag = ecms/2-pddd.e();
00321
00322 if(fabs(delE_tag_tag)<deltaE_tem) {
00323 deltaE_tem = fabs(delE_tag_tag);
00324 delE_tag_temp = delE_tag_tag;
00325 mass_bcgg = mass_bc_tem;
00326
00327 pddd_temp = pddd;
00328
00329 ipi1_temp=ipi1;
00330 ipi2_temp=ipi2;
00331 ik1_temp =ik1;
00332 ipi3_temp=ipi3;
00333
00334 ncount1 = 1;
00335
00336 }
00337 }
00338 }
00339 }
00340 }
00341
00342 if(ncount1 == 1){
00343 tagmode=21;
00344 if(m_chargetag<0) tagmode=-21;
00345 tagmd=tagmode;
00346 mass_bc = mass_bcgg;
00347 delE_tag = delE_tag_temp;
00348 cqtm = 0.0;
00349
00350 iGoodtag.push_back(ipi1_temp);
00351 iGoodtag.push_back(ipi2_temp);
00352 iGoodtag.push_back(ik1_temp);
00353 iGoodtag.push_back(ipi3_temp);
00354
00355 iGamtag.push_back(9999);
00356 iGamtag.push_back(9999);
00357 iGamtag.push_back(9999);
00358 iGamtag.push_back(9999);
00359
00360 ptag = pddd_temp;
00361
00362 k0kpimd=true;
00363 }
00364
00365 }
00366
00367
00368