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00023 #include "SD0TagAlg/K3pi.h"
00024 #include "SD0TagAlg/SingleBase.h"
00025
00026 K3pi::K3pi()
00027 {}
00028
00029 K3pi::~K3pi()
00030 {}
00031
00032
00033 void K3pi::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 iGoodtag.clear();
00040 iGamtag.clear();
00041
00042 double mass_bcgg, delE_tag_temp;
00043 int m_chargetag,m_chargek,m_chargepi1,m_chargepi2,m_chargepi3;
00044 int ika_temp,ipi1_temp,ipi2_temp,ipi3_temp,ipi4_temp;
00045 HepLorentzVector kmfit1,kmfit2,kmfit3,kmfit4,pddd;
00046
00047 int cqtm_temp;
00048 HepLorentzVector pddd_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 k3pimd=false;
00060 double tagmode=0;
00061
00062 if((evtRecEvent->totalCharged() < 4)){ 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 double xv=xorigin.x();
00085 double yv=xorigin.y();
00086 double zv=xorigin.z();
00087
00088 HepPoint3D point0(0.,0.,0.);
00089 HepPoint3D IP(xorigin[0],xorigin[1],xorigin[2]);
00090
00091 HepLorentzVector ptrk1_temp, ptrk2_temp, ptrk3_temp, ptrk4_temp;
00093 for(int i = 0; i < evtRecEvent->totalCharged(); i++) {
00094 EvtRecTrackIterator itTrk1 = evtRecTrkCol->begin() + i;
00095
00096 int ika= (*itTrk1)->trackId();
00097
00098 if(!(*itTrk1)->isMdcKalTrackValid()) continue;
00099 RecMdcKalTrack* mdcKalTrk1 = (*itTrk1)->mdcKalTrack();
00100 RecMdcKalTrack::setPidType(RecMdcKalTrack::kaon);
00102 m_chargek=mdcKalTrk1->charge();
00103 if(Charge_candidate_D != 0) {
00104 if(m_chargek != -Charge_candidate_D) continue;
00105 }
00106 if(Charge_candidate_D == 0) {
00107 if(abs(m_chargek) != 1) continue;
00108 }
00110 HepVector a1 = mdcKalTrk1->getZHelixK();
00111 HepSymMatrix Ea1 = mdcKalTrk1->getZErrorK();
00112
00113 VFHelix helixip3_1(point0,a1,Ea1);
00114 helixip3_1.pivot(IP);
00115 HepVector vecipa1 = helixip3_1.a();
00116
00117 double dr1 = fabs(vecipa1[0]);
00118 double dz1 = fabs(vecipa1[3]);
00119 double costheta1 = cos(mdcKalTrk1->theta());
00120
00121 if ( dr1 >= 1.0) continue;
00122 if ( dz1 >= 10.0) continue;
00123 if ( fabs(costheta1) >= 0.93) continue;
00125 if(PID_flag == 5) {
00126 simple_pid->preparePID(*itTrk1);
00127 if(simple_pid->probKaon() < 0.0 || simple_pid->probKaon() < simple_pid->probPion()) continue;
00128 }
00130 WTrackParameter kam(xmass[3],mdcKalTrk1->getZHelixK(),mdcKalTrk1->getZErrorK() );
00131
00132
00133
00134
00135 for(int j = 0; j< evtRecEvent->totalCharged();j++) {
00136 EvtRecTrackIterator itTrk2 = evtRecTrkCol->begin() + j;
00137
00138 int ipi1= (*itTrk2)->trackId();
00139 if(ipi1==ika) continue;
00140
00141 if(!(*itTrk2)->isMdcKalTrackValid()) continue;
00142 RecMdcKalTrack* mdcKalTrk2 = (*itTrk2)->mdcKalTrack();
00143 RecMdcKalTrack::setPidType(RecMdcKalTrack::pion);
00145 m_chargepi1=mdcKalTrk2->charge();
00146 if((m_chargek + m_chargepi1) != 0) continue;
00148 HepVector a2 = mdcKalTrk2->getZHelix();
00149 HepSymMatrix Ea2 = mdcKalTrk2->getZError();
00150 VFHelix helixip3_2(point0,a2,Ea2);
00151 helixip3_2.pivot(IP);
00152 HepVector vecipa2 = helixip3_2.a();
00153
00154 double dr2 = fabs(vecipa2[0]);
00155 double dz2 = fabs(vecipa2[3]);
00156 double costheta2 = cos(mdcKalTrk2->theta());
00157 if ( dr2 >= 1.0) continue;
00158 if ( dz2 >= 10.0) continue;
00159 if ( fabs(costheta2) >= 0.93) continue;
00161 if(PID_flag == 5) {
00162 simple_pid->preparePID(*itTrk2);
00163 if(simple_pid->probPion() < 0.0 || simple_pid->probPion() < simple_pid->probKaon()) continue;
00164 }
00166 WTrackParameter pip1(xmass[2],mdcKalTrk2->getZHelix(),mdcKalTrk2->getZError() );
00167
00168
00169
00170
00171 for(int k = 0; k< evtRecEvent->totalCharged(); k++) {
00172 EvtRecTrackIterator itTrk3 = evtRecTrkCol->begin() + k;
00173
00174 int ipi2= (*itTrk3)->trackId();
00175 if(ipi2==ika || ipi2==ipi1) continue;
00176
00177 if(!(*itTrk3)->isMdcKalTrackValid()) continue;
00178 RecMdcKalTrack* mdcKalTrk3 = (*itTrk3)->mdcKalTrack();
00179 RecMdcKalTrack::setPidType (RecMdcKalTrack::pion);
00181 m_chargepi2=mdcKalTrk3->charge();
00182 if((m_chargek + m_chargepi2) != 0) continue;
00184 HepVector a3 = mdcKalTrk3->getZHelix();
00185 HepSymMatrix Ea3 = mdcKalTrk3->getZError();
00186 VFHelix helixip3_3(point0,a3,Ea3);
00187 helixip3_3.pivot(IP);
00188 HepVector vecipa3 = helixip3_3.a();
00189
00190 double dr3 = fabs(vecipa3[0]);
00191 double dz3 = fabs(vecipa3[3]);
00192 double costheta3 = cos(mdcKalTrk3->theta());
00193 if ( dr3 >= 1.0) continue;
00194 if ( dz3 >= 10.0) continue;
00195 if ( fabs(costheta3) >= 0.93) continue;
00197 if(PID_flag == 5) {
00198 simple_pid->preparePID(*itTrk3);
00199 if(simple_pid->probPion() < 0.0 || simple_pid->probPion() < simple_pid->probKaon()) continue;
00200 }
00202 WTrackParameter pip2(xmass[2],mdcKalTrk3->getZHelix(),mdcKalTrk3->getZError() );
00203
00204
00205
00206
00207 for(int l = 0; l< evtRecEvent->totalCharged(); l++) {
00208 EvtRecTrackIterator itTrk4 = evtRecTrkCol->begin() + l;
00209
00210 int ipi3= (*itTrk4)->trackId();
00211 if(ipi3==ika || ipi3==ipi1 || ipi3==ipi2 ) continue;
00212
00213 if(!(*itTrk4)->isMdcKalTrackValid()) continue;
00214 RecMdcKalTrack* mdcKalTrk4 = (*itTrk4)->mdcKalTrack();
00215 RecMdcKalTrack::setPidType (RecMdcKalTrack::pion);
00217 m_chargepi3=mdcKalTrk4->charge();
00218 if((m_chargepi2 + m_chargepi3) != 0) continue;
00220 HepVector a4 = mdcKalTrk4->getZHelix();
00221 HepSymMatrix Ea4 = mdcKalTrk4->getZError();
00222 VFHelix helixip3_4(point0,a4,Ea4);
00223 helixip3_4.pivot(IP);
00224 HepVector vecipa4 = helixip3_4.a();
00225
00226 double dr4 = fabs(vecipa4[0]);
00227 double dz4 = fabs(vecipa4[3]);
00228 double costheta4 = cos(mdcKalTrk4->theta());
00229 if ( dr4 >= 1.0) continue;
00230 if ( dz4 >= 10.0) continue;
00231 if ( fabs(costheta4) >= 0.93) continue;
00233 if(PID_flag == 5) {
00234 simple_pid->preparePID(*itTrk4);
00235 if(simple_pid->probPion() < 0.0 || simple_pid->probPion() < simple_pid->probKaon()) continue;
00236 }
00238 WTrackParameter pip3(xmass[2],mdcKalTrk4->getZHelix(),mdcKalTrk4->getZError() );
00239
00241 HepPoint3D vx(xorigin.x(), xorigin.y(), xorigin.z());
00242 HepSymMatrix Evx(3, 0);
00243 double bx = 1E+6; Evx[0][0] = bx*bx;
00244 double by = 1E+6; Evx[1][1] = by*by;
00245 double bz = 1E+6; Evx[2][2] = bz*bz;
00246 VertexParameter vxpar; vxpar.setVx(vx); vxpar.setEvx(Evx);
00248
00249 VertexFit* vtxfit = VertexFit::instance();
00250 vtxfit->init();
00251 vtxfit->AddTrack(0, kam);
00252 vtxfit->AddTrack(1, pip1);
00253 vtxfit->AddTrack(2, pip2);
00254 vtxfit->AddTrack(3, pip3);
00255 vtxfit->AddVertex(0, vxpar, 0, 1, 2, 3);
00256 if(!vtxfit->Fit(0)) continue;
00257 vtxfit->Swim(0);
00258
00259 WTrackParameter wkam = vtxfit->wtrk(0);
00260 WTrackParameter wpip1 = vtxfit->wtrk(1);
00261 WTrackParameter wpip2 = vtxfit->wtrk(2);
00262 WTrackParameter wpip3 = vtxfit->wtrk(3);
00263
00264 HepVector kam_val = HepVector(7,0);
00265 HepVector pip1_val = HepVector(7,0);
00266 HepVector pip2_val = HepVector(7,0);
00267 HepVector pip3_val = HepVector(7,0);
00268 kam_val = wkam.w();
00269 pip1_val = wpip1.w();
00270 pip2_val = wpip2.w();
00271 pip3_val = wpip3.w();
00272
00273 HepLorentzVector P_KAM(kam_val[0],kam_val[1],kam_val[2],kam_val[3]);
00274 HepLorentzVector P_PIP1(pip1_val[0],pip1_val[1],pip1_val[2],pip1_val[3]);
00275 HepLorentzVector P_PIP2(pip2_val[0],pip2_val[1],pip2_val[2],pip2_val[3]);
00276 HepLorentzVector P_PIP3(pip3_val[0],pip3_val[1],pip3_val[2],pip3_val[3]);
00277
00278 P_KAM.boost(-0.011,0,0);
00279 P_PIP1.boost(-0.011,0,0);
00280 P_PIP2.boost(-0.011,0,0);
00281 P_PIP3.boost(-0.011,0,0);
00282 pddd = P_KAM + P_PIP1 + P_PIP2 + P_PIP3;
00283
00284 double pk3pi=pddd.rho();
00285
00286 double temp1 = (ecms/2)*(ecms/2)-pk3pi*pk3pi ;
00287 if(temp1<0) temp1 =0;
00288 double mass_bc_tem = sqrt(temp1);
00289 if(mass_bc_tem < 1.82 || mass_bc_tem > 1.89) continue;
00290
00291 double delE_tag_tag = ecms/2-pddd.e();
00292
00293 if(fabs(delE_tag_tag)<deltaE_tem) {
00294 deltaE_tem = fabs(delE_tag_tag);
00295 delE_tag_temp = delE_tag_tag;
00296 mass_bcgg = mass_bc_tem;
00297
00298 pddd_temp = pddd;
00299 cqtm_temp = m_chargek;
00300
00301 ika_temp=ika;
00302 ipi1_temp=ipi1;
00303 ipi2_temp=ipi2;
00304 ipi3_temp=ipi3;
00305 ncount1 = 1;
00306
00307 }
00308 }
00309 }
00310 }
00311 }
00312
00313 if(ncount1 == 1){
00314 tagmode=13;
00315 if(cqtm_temp<0) tagmode=-13;
00316 tagmd=tagmode;
00317 mass_bc = mass_bcgg;
00318 delE_tag = delE_tag_temp;
00319 cqtm = -1.0*cqtm_temp;
00320
00321 iGoodtag.push_back(ika_temp);
00322 iGoodtag.push_back(ipi1_temp);
00323 iGoodtag.push_back(ipi2_temp);
00324 iGoodtag.push_back(ipi3_temp);
00325
00326 iGamtag.push_back(9999);
00327 iGamtag.push_back(9999);
00328 iGamtag.push_back(9999);
00329 iGamtag.push_back(9999);
00330
00331 ptag = pddd_temp;
00332
00333 k3pimd=true;
00334
00335 }
00336 }
00337