#include <DSemilepAlg.h>
Public Member Functions | |
| DSemilepAlg (const std::string &name, ISvcLocator *pSvcLocator) | |
| StatusCode | initialize () |
| StatusCode | execute () |
| StatusCode | finalize () |
| bool | isGoodTrack (EvtRecTrack *trk, Hep3Vector xorigin) |
| void | calU (DTagToolIterator sditer, RecMdcKalTrack *Etrack, RecMdcKalTrack *Ktrack, double &U, double &MM2, double &q2) |
| Hep3Vector | tagDP3 (DTagToolIterator iter_dtag) |
Private Attributes | |
| ISimplePIDSvc * | m_simplePIDSvc |
| std::string | m_pdt |
| NTuple::Tuple * | m_tuple0 |
| NTuple::Item< double > | m_mBC |
| NTuple::Item< double > | m_deltaE |
| NTuple::Item< double > | m_U |
| NTuple::Item< double > | m_mode |
| NTuple::Item< double > | m_MM2 |
| NTuple::Item< double > | m_q2 |
Definition at line 12 of file DSemilepAlg.h.
| DSemilepAlg::DSemilepAlg | ( | const std::string & | name, | |
| ISvcLocator * | pSvcLocator | |||
| ) |
| void DSemilepAlg::calU | ( | DTagToolIterator | sditer, | |
| RecMdcKalTrack * | Etrack, | |||
| RecMdcKalTrack * | Ktrack, | |||
| double & | U, | |||
| double & | MM2, | |||
| double & | q2 | |||
| ) |
Definition at line 342 of file DSemilepAlg.cxx.
References DstMdcKalTrack::electron, DstMdcKalTrack::kaon, me, mkaon, DstMdcKalTrack::px(), DstMdcKalTrack::py(), DstMdcKalTrack::pz(), DstMdcKalTrack::setPidType(), and tagDP3().
Referenced by execute().
00342 { 00343 00344 Etrack->setPidType(RecMdcKalTrack::electron); 00345 Ktrack->setPidType(RecMdcKalTrack::kaon); 00346 00347 Hep3Vector P3_tag = tagDP3(sditer); 00348 00349 Hep3Vector P3_E(Etrack->px(), Etrack->py(),Etrack->pz()); 00350 Hep3Vector P3_K(Ktrack->px(), Ktrack->py(),Ktrack->pz()); 00351 00352 HepLorentzVector P4_E(P3_E, sqrt( P3_E.mag2() + me * me)); 00353 HepLorentzVector P4_K(P3_K, sqrt( P3_K.mag2() + mkaon * mkaon)); 00354 00355 // Boost 00356 P4_E.boost(-0.011,0,0); 00357 P4_K.boost(-0.011,0,0); 00358 00359 double e_miss = (*sditer)->beamE() - P4_E.e() - P4_K.e(); 00360 Hep3Vector P3_miss = -P3_tag - P4_E.vect() - P4_K.vect(); 00361 00362 U = e_miss - P3_miss.mag(); 00363 MM2 = U * (e_miss + P3_miss.mag()); 00364 00365 HepLorentzVector P4_W(P3_E+P3_miss*fabs(e_miss/P3_miss.mag()),e_miss+P4_E.e()); 00366 q2 = P4_W.m2(); 00367 00368 }
| StatusCode DSemilepAlg::execute | ( | ) |
Definition at line 100 of file DSemilepAlg.cxx.
References calU(), DstMdcKalTrack::charge(), DTagTool::clear(), DTagTool::cosmicandleptonVeto(), eventNo, Bes_Common::FATAL, DTagTool::findSTag(), genRecEmupikp::i, Bes_Common::INFO, DTagTool::isDTagListEmpty(), ISimplePIDSvc::iselectron(), isGoodTrack(), ISimplePIDSvc::iskaon(), IVertexDbSvc::isVertexValid(), EvtRecDTag::kD0toKPi, EvtRecDTag::kD0toKPiPi0, EvtRecDTag::kD0toKPiPiPi, m_deltaE, m_mBC, m_MM2, m_mode, m_q2, m_simplePIDSvc, m_tuple0, m_U, DTagTool::modes_begin(), DTagTool::modes_end(), msgSvc(), ISimplePIDSvc::preparePID(), IVertexDbSvc::PrimaryVertex(), runNo, and DTagTool::stag().
00100 { 00101 00102 MsgStream log(msgSvc(), name()); 00103 log << MSG::INFO << "in execute()" << endreq; 00104 00105 SmartDataPtr<Event::EventHeader> eventHeader(eventSvc(),"/Event/EventHeader"); 00106 int runNo=eventHeader->runNumber(); 00107 int eventNo=eventHeader->eventNumber(); 00108 00109 // 00110 //if(eventNo % 1000 == 0) 00111 //cout << "Event: "<< eventNo << endl; 00112 00113 SmartDataPtr<EvtRecEvent> evtRecEvent(eventSvc(), "/Event/EvtRec/EvtRecEvent"); 00114 if ( ! evtRecEvent ) { 00115 log << MSG::FATAL << "Could not find EvtRecEvent" << endreq; 00116 return StatusCode::FAILURE; 00117 } 00118 00119 SmartDataPtr<EvtRecTrackCol> evtRecTrackCol( eventSvc(), "/Event/EvtRec/EvtRecTrackCol"); 00120 if ( ! evtRecTrackCol ) { 00121 log << MSG::FATAL << "Could not find EvtRecTrackCol" << endreq; 00122 return StatusCode::FAILURE; 00123 } 00124 00126 SmartDataPtr<EvtRecVeeVertexCol> evtRecVeeVertexCol(eventSvc(), "/Event/EvtRec/EvtRecVeeVertexCol"); 00127 if ( ! evtRecVeeVertexCol ) { 00128 log << MSG::FATAL << "Could not find EvtRecVeeVertexCol" << endreq; 00129 return StatusCode::FAILURE; 00130 } 00131 00133 SmartDataPtr<EvtRecPi0Col> recPi0Col(eventSvc(), "/Event/EvtRec/EvtRecPi0Col"); 00134 if ( ! recPi0Col ) { 00135 log << MSG::FATAL << "Could not find EvtRecPi0Col" << endreq; 00136 return StatusCode::FAILURE; 00137 00138 } 00139 00140 //get primary vertex from db 00141 Hep3Vector xorigin(0,0,0); 00142 IVertexDbSvc* vtxsvc; 00143 Gaudi::svcLocator()->service("VertexDbSvc", vtxsvc); 00144 if (vtxsvc->isVertexValid()) { 00145 //vertex[0] = vx; vertex[1]= vy; vertex[2] = vz; 00146 double* vertex = vtxsvc->PrimaryVertex(); 00147 xorigin.setX(vertex[0]); 00148 xorigin.setY(vertex[1]); 00149 xorigin.setZ(vertex[2]); 00150 } 00151 00152 // DTAGTOOL 00153 DTagTool dtagTool; 00154 00155 00156 if( dtagTool.isDTagListEmpty() ){ 00157 // cout<<"no D candidates found"<<endl; 00158 return StatusCode::SUCCESS; 00159 } 00160 //else{ 00161 // cout<<"found D candidates found"<<endl; 00162 //} 00163 00164 DTagToolIterator iter_begin = dtagTool.modes_begin(); 00165 DTagToolIterator iter_end = dtagTool.modes_end(); 00166 00167 //find semileptonic decay candidate 00168 vector<DTagToolIterator> vsditer; 00169 00170 // Using modes 0,1 and 3 (D0->KPi, D0->KPiPi0, D0->KPiPiPi ) fill dtagtool 00171 // Combining three modes to look at the signal side of all of them 00172 if(dtagTool.findSTag( EvtRecDTag::kD0toKPi,1) && dtagTool.cosmicandleptonVeto()) 00173 vsditer.push_back(dtagTool.stag()); 00174 if(dtagTool.findSTag( EvtRecDTag::kD0toKPi,-1) && dtagTool.cosmicandleptonVeto()) 00175 vsditer.push_back(dtagTool.stag()); 00176 if(dtagTool.findSTag( EvtRecDTag::kD0toKPiPi0,1)) 00177 vsditer.push_back(dtagTool.stag()); 00178 if(dtagTool.findSTag( EvtRecDTag::kD0toKPiPi0,-1)) 00179 vsditer.push_back(dtagTool.stag()); 00180 if(dtagTool.findSTag( EvtRecDTag::kD0toKPiPiPi,1) ) 00181 vsditer.push_back(dtagTool.stag()); 00182 if(dtagTool.findSTag( EvtRecDTag::kD0toKPiPiPi,-1) ) 00183 vsditer.push_back(dtagTool.stag()); 00184 00185 00186 typedef vector<DTagToolIterator>::size_type vec_sz; 00187 00188 //loop over single tag to reconstruct signal side 00189 for(vec_sz i = 0 ; i < vsditer.size() ; i++){ 00190 00191 //fill single tags only before selection 00192 m_deltaE = (*vsditer[i])->deltaE(); 00193 m_mode = (*vsditer[i])->decayMode(); 00194 m_mBC = (*vsditer[i])->mBC(); 00195 00196 //Get the DTagToolIterator of the tag for easier usage in the code 00197 DTagToolIterator sditer = vsditer[i]; 00198 00199 // Check signal side for good tracks and charge of the tracks 00200 SmartRefVector<EvtRecTrack> othertracks = (*sditer)->otherTracks(); 00201 vector<int> iGood; int tcharge=0; 00202 00203 for(int i = 0 ; i < othertracks.size() ; i++){ 00204 if(isGoodTrack(othertracks[i],xorigin)){ 00205 iGood.push_back(i); 00206 RecMdcKalTrack *mdcKalTrk = othertracks[i]->mdcKalTrack(); 00207 tcharge += mdcKalTrk->charge(); 00208 } 00209 } 00210 00211 // Keeping only events with 2 good signal tracks with zero total charge 00212 if(iGood.size() != 2 || tcharge != 0) 00213 continue; 00214 00215 // Use SimplePIDSvc package to identify the tracks 00216 m_simplePIDSvc->preparePID(othertracks[iGood[0]]); 00217 bool FtrkElectron = m_simplePIDSvc->iselectron(); 00218 bool FtrkKaon = m_simplePIDSvc->iskaon(); 00219 00220 m_simplePIDSvc->preparePID(othertracks[iGood[1]]); 00221 bool StrkElectron = m_simplePIDSvc->iselectron(); 00222 bool StrkKaon = m_simplePIDSvc->iskaon(); 00223 00224 // 00225 // As at the signal side tracks are not listed in a particular order, there are two senarios 00226 // 00227 // Senario 1: Track 0 is electron, track 1 is kaon 00228 if(FtrkElectron && StrkKaon) { 00229 00230 RecMdcKalTrack* ftrk = othertracks[iGood[0]]->mdcKalTrack(); 00231 RecMdcKalTrack* strk = othertracks[iGood[1]]->mdcKalTrack(); 00232 00233 SmartRefVector<EvtRecTrack> tracks = (*sditer)->tracks(); 00234 RecMdcKalTrack* tagsidektrk = tracks[0]->mdcKalTrack(); 00235 00236 //Requiring electron having the same charge as the tag side kaon 00237 if(ftrk->charge() * tagsidektrk->charge() > 0){ 00238 double U_1 = 0; 00239 double MM2_1 = 0; 00240 double q2_1 = 0; 00241 00242 //Calculate U and MM2 using a function 00243 calU(sditer,strk,ftrk,U_1,MM2_1,q2_1); 00244 00245 m_U = U_1; 00246 m_MM2 = MM2_1; 00247 m_q2 = q2_1; 00248 00249 m_tuple0->write(); 00250 } 00251 00252 00253 }//end of senario 1 00254 00255 //Senario 2: Track 0 is kaon, track 1 is electon 00256 if(StrkElectron && FtrkKaon){ 00257 00258 RecMdcKalTrack* ftrk = othertracks[iGood[0]]->mdcKalTrack(); 00259 RecMdcKalTrack* strk = othertracks[iGood[1]]->mdcKalTrack(); 00260 00261 SmartRefVector<EvtRecTrack> tracks = (*sditer)->tracks(); 00262 00263 RecMdcKalTrack* tagsidektrk = tracks[0]->mdcKalTrack(); 00264 00265 //Requiring electron having the same charge as the tag side kaon 00266 if(strk->charge() * tagsidektrk->charge() > 0){ 00267 00268 double U_1 = 0; 00269 double MM2_1 = 0; 00270 double q2_1 = 0; 00271 00272 //Calculate U and MM2 using a function 00273 calU(sditer,strk,ftrk,U_1,MM2_1,q2_1); 00274 00275 m_U = U_1; 00276 m_MM2 = MM2_1; 00277 m_q2 = q2_1; 00278 00279 m_tuple0->write(); 00280 } 00281 }//end of senario 2 00282 00283 } 00284 00285 //Clear DTagTool 00286 dtagTool.clear(); 00287 }
| StatusCode DSemilepAlg::finalize | ( | ) |
Definition at line 292 of file DSemilepAlg.cxx.
References Bes_Common::INFO, and msgSvc().
00292 { 00293 MsgStream log(msgSvc(), name()); 00294 log << MSG::INFO << "in finalize()" << endmsg; 00295 00296 return StatusCode::SUCCESS; 00297 }
| StatusCode DSemilepAlg::initialize | ( | ) |
Definition at line 62 of file DSemilepAlg.cxx.
References calibUtil::ERROR, Bes_Common::FATAL, Bes_Common::INFO, m_deltaE, m_mBC, m_MM2, m_mode, m_q2, m_simplePIDSvc, m_tuple0, m_U, msgSvc(), and ntupleSvc().
00062 { 00063 00064 MsgStream log(msgSvc(), name()); 00065 log << MSG::INFO << "in initialize()" << endmsg; 00066 StatusCode status; 00067 00068 //NTUPLE 00069 NTuplePtr nt0(ntupleSvc(), "FILE1/dsemilep"); 00070 if ( nt0 ) m_tuple0 = nt0; 00071 else { 00072 m_tuple0 = ntupleSvc()->book ("FILE1/dsemilep", CLID_ColumnWiseTuple, "track N-Tuple example"); 00073 if ( m_tuple0 ) { 00074 status = m_tuple0->addItem ("U", m_U); 00075 status = m_tuple0->addItem ("MM2", m_MM2); 00076 status = m_tuple0->addItem ("mBC", m_mBC); 00077 status = m_tuple0->addItem ("q2", m_q2); 00078 status = m_tuple0->addItem ("deltaE", m_deltaE); 00079 status = m_tuple0->addItem ("mode", m_mode); 00080 } 00081 else { 00082 log << MSG::ERROR << " Cannot book N-tuple:" << long(m_tuple0) << endmsg; 00083 return StatusCode::FAILURE; 00084 } 00085 } 00086 00087 StatusCode sc = service("SimplePIDSvc", m_simplePIDSvc); 00088 if ( sc.isFailure()) { 00089 log << MSG::FATAL << "Could not load SimplePIDSvc!" << endreq; 00090 return sc; 00091 } 00092 00093 log << MSG::INFO << "successfully return from initialize()" <<endmsg; 00094 return StatusCode::SUCCESS; 00095 }
| bool DSemilepAlg::isGoodTrack | ( | EvtRecTrack * | trk, | |
| Hep3Vector | xorigin | |||
| ) |
Definition at line 305 of file DSemilepAlg.cxx.
References VFHelix::a(), cos(), RecMdcKalTrack::getZError(), RecMdcKalTrack::getZHelix(), EvtRecTrack::isMdcKalTrackValid(), EvtRecTrack::mdcKalTrack(), DstMdcKalTrack::pion, VFHelix::pivot(), DstMdcKalTrack::setPidType(), DstMdcKalTrack::theta(), and vec.
Referenced by execute().
00305 { 00306 if(!(trk->isMdcKalTrackValid())) return false; 00307 00308 RecMdcKalTrack *mdcKalTrk = trk->mdcKalTrack(); 00309 mdcKalTrk->setPidType(RecMdcKalTrack::pion); 00310 HepVector a = mdcKalTrk->getZHelix(); 00311 HepSymMatrix Ea = mdcKalTrk->getZError(); 00312 HepPoint3D pivot(0.,0.,0.); 00313 HepPoint3D IP(xorigin[0],xorigin[1],xorigin[2]); 00314 VFHelix helixp(pivot,a,Ea); 00315 helixp.pivot(IP); 00316 HepVector vec = helixp.a(); 00317 double vrl = vec[0]; 00318 double vzl = vec[3]; 00319 double costheta = cos(mdcKalTrk->theta()); 00320 00321 //Event selection criteria 00322 if(fabs(vrl) < 1 && fabs(vzl) < 10 && fabs(costheta) < 0.93) 00323 return true; 00324 return false; 00325 }
| Hep3Vector DSemilepAlg::tagDP3 | ( | DTagToolIterator | iter_dtag | ) |
Definition at line 329 of file DSemilepAlg.cxx.
Referenced by calU().
00329 { 00330 00331 SmartRefVector<EvtRecTrack> tracks=(*iter_dtag)->tracks(); 00332 SmartRefVector<EvtRecTrack> showers=(*iter_dtag)->showers(); 00333 00334 HepLorentzVector p4=(*iter_dtag)->p4(); 00335 p4.boost(-0.011,0,0); 00336 Hep3Vector p3=p4.v(); 00337 return p3; 00338 }
NTuple::Item<double> DSemilepAlg::m_deltaE [private] |
NTuple::Item<double> DSemilepAlg::m_mBC [private] |
NTuple::Item<double> DSemilepAlg::m_MM2 [private] |
NTuple::Item<double> DSemilepAlg::m_mode [private] |
std::string DSemilepAlg::m_pdt [private] |
Definition at line 27 of file DSemilepAlg.h.
NTuple::Item<double> DSemilepAlg::m_q2 [private] |
ISimplePIDSvc* DSemilepAlg::m_simplePIDSvc [private] |
NTuple::Tuple* DSemilepAlg::m_tuple0 [private] |
NTuple::Item<double> DSemilepAlg::m_U [private] |
1.4.7