37{
38
39 int nGood=iGood.size();
40 int nGam=iGam.size();
41
42 iGoodtag.clear();
43 iGamtag.clear();
44
45 double mass_bcgg,delE_tag_temp;
46 int m_chargetag,m_chargek1,m_chargek2;
47 int ik1_temp,ik2_temp, iGam1_temp, iGam2_temp;
48 HepLorentzVector pddd;
49 HepLorentzVector pddd_temp;
50
51 IDataProviderSvc* eventSvc = NULL;
52 Gaudi::svcLocator()->service("EventDataSvc", eventSvc);
54 SmartDataPtr<Event::EventHeader> eventHeader(eventSvc,"/Event/EventHeader");
55
56 int runNo=eventHeader->runNumber();
57 int rec=eventHeader->eventNumber();
58
59 double xecm=2*Ebeam;
60
61 kkpi0md=false;
62 double tagmode=0;
63
64 if((evtRecEvent->totalCharged() < 2||nGam<2)){ return; }
65
67
68
70 Gaudi::svcLocator()->service("SimplePIDSvc", simple_pid);
71
72 double deltaE_tem = 0.20;
73 int ncount1 = 0;
74
75 Hep3Vector xorigin(0,0,0);
77 Gaudi::svcLocator()->service("VertexDbSvc", vtxsvc);
79 {
82 xorigin.setX(dbv[0]);
83 xorigin.setY(dbv[1]);
84 xorigin.setZ(dbv[2]);
85 }
86
87 double xv=xorigin.x();
88 double yv=xorigin.y();
89 double zv=xorigin.z();
90
92 HepPoint3D IP(xorigin[0],xorigin[1],xorigin[2]);
93
94
95 HepLorentzVector p2gfit;
96 HepLorentzVector p2gg;
97
98 for(int i = 0; i < evtRecEvent->totalCharged(); i++) {
100
101 int ik1 = (*itTrk)->trackId();
102
103 if(!(*itTrk)->isMdcKalTrackValid()) continue;
106
107 m_chargek1 = mdcKalTrk1->
charge();
108 if(
abs(m_chargek1) != 1)
continue;
109
110
113
114 VFHelix helixip3_1(point0,a1,Ea1);
115 helixip3_1.pivot(IP);
116 HepVector vecipa1 = helixip3_1.a();
117
118 double dr1 = fabs(vecipa1[0]);
119 double dz1 = fabs(vecipa1[3]);
120 double costheta1 =
cos(mdcKalTrk1->
theta());
121
122 if ( dr1 >= 1.0) continue;
123 if ( dz1 >= 10.0) continue;
124 if ( fabs(costheta1) >= 0.93) continue;
125
126 if(PID_flag == 5) {
129 }
130
132
133
134
135
136 for(int j = 0; j< evtRecEvent->totalCharged(); j++) {
138
139 int ik2= (*itTrk)->trackId();
140 if(ik2==ik1) continue;
141
142 if(!(*itTrk)->isMdcKalTrackValid()) continue;
145
146 m_chargek2 = mdcKalTrk2->
charge();
147 if((m_chargek1 + m_chargek2) != 0) continue;
148
149
152 VFHelix helixip3_2(point0,a2,Ea2);
153 helixip3_2.pivot(IP);
154 HepVector vecipa2 = helixip3_2.a();
155
156 double dr2 = fabs(vecipa2[0]);
157 double dz2 = fabs(vecipa2[3]);
158 double costheta2 =
cos(mdcKalTrk2->
theta());
159 if ( dr2 >= 1.0) continue;
160 if ( dz2 >= 10.0) continue;
161 if ( fabs(costheta2) >= 0.93) continue;
162
163 if(PID_flag == 5) {
166 }
167
169
170
171 for(int m = 0; m < nGam-1; m++) {
172 if(iGam[m]==-1) continue;
173 RecEmcShower *g1Trk = (*(evtRecTrkCol->begin()+iGam[m]))->emcShower();
174 double eraw1 = g1Trk->
energy();
176 double the1 = g1Trk->
theta();
177 HepLorentzVector ptrkg1,ptrkg10,ptrkg12;
180 ptrkg1.setPz(eraw1*
cos(the1));
181 ptrkg1.setE(eraw1);
182 ptrkg10 = ptrkg1;
183 ptrkg12 = ptrkg1.boost(-0.011,0,0);
184
185
186 for(
int n = m+1;
n < nGam;
n++) {
187 if(iGam[
n]==-1)
continue;
188 RecEmcShower *g2Trk = (*(evtRecTrkCol->begin()+iGam[
n]))->emcShower();
189 double eraw2 = g2Trk->
energy();
191 double the2 = g2Trk->
theta();
192 HepLorentzVector ptrkg2,ptrkg20,ptrkg22;
195 ptrkg2.setPz(eraw2*
cos(the2));
196 ptrkg2.setE(eraw2);
197 ptrkg20 = ptrkg2;
198 ptrkg22 = ptrkg2.boost(-0.011,0,0);
199
200
201 HepLorentzVector ptrkpi0;
202 ptrkpi0 = ptrkg12+ptrkg22;
203 double m_xmpi0_tem = ptrkpi0.m();
204 if(m_xmpi0_tem>0.150||m_xmpi0_tem<0.115) continue;
205
206 bool IsEndcap1 = false; bool IsEndcap2 = false;
207 if(fabs(
cos(the1)) > 0.86 && fabs(
cos(the1)) < 0.92) IsEndcap1 =
true;
208 if(fabs(
cos(the2)) > 0.86 && fabs(
cos(the2)) < 0.92) IsEndcap2 =
true;
209 if(IsEndcap1 && IsEndcap2) continue;
210
217
220
221 double pi0_chisq = kmfit->
chisq(0);
222 if ( pi0_chisq >= 2500) continue;
223 HepLorentzVector p2gfit = kmfit->
pfit(0) + kmfit->
pfit(1);
224 p2gfit.boost(-0.011,0,0);
225
226
227 HepPoint3D vx(xorigin.x(), xorigin.y(), xorigin.z());
228 HepSymMatrix Evx(3, 0);
229 double bx = 1E+6; Evx[0][0] = bx*bx;
230 double by = 1E+6; Evx[1][1] = by*by;
231 double bz = 1E+6; Evx[2][2] = bz*bz;
233
234
240 if(!vtxfit->
Fit(0))
continue;
242
245
246 HepVector kam_val = HepVector(7,0);
248 HepVector kap_val = HepVector(7,0);
250
251 HepLorentzVector P_KAM(kam_val[0],kam_val[1],kam_val[2],kam_val[3]);
252 HepLorentzVector P_KAP(kap_val[0],kap_val[1],kap_val[2],kap_val[3]);
253
254 P_KAM.boost(-0.011,0,0);
255 P_KAP.boost(-0.011,0,0);
256 pddd = P_KAM + P_KAP + p2gfit;
257
258 double pkkpi0 = pddd.rho();
259
260 double temp1 = (
ecms/2)*(
ecms/2)-pkkpi0*pkkpi0 ;
261 if(temp1<0) temp1 =0;
262 double mass_bc_tem = sqrt(temp1);
263 if(mass_bc_tem < 1.82 || mass_bc_tem > 1.89) continue;
264
265 double delE_tag_tag =
ecms/2-pddd.e();
266
267 if(fabs(delE_tag_tag)<deltaE_tem) {
268 deltaE_tem = fabs(delE_tag_tag);
269 delE_tag_temp = delE_tag_tag;
270 mass_bcgg = mass_bc_tem;
271
272 pddd_temp = pddd;
273
274 ik1_temp = ik1;
275 ik2_temp = ik2;
276 iGam1_temp = iGam[m];
277 iGam2_temp = iGam[
n];
278 ncount1 = 1;
279
280 }
281 }
282 }
283 }
284 }
285
286 if(ncount1 == 1) {
287 tagmode=23;
288 if(m_chargetag<0) tagmode=-23;
289 tagmd=tagmode;
290 mass_bc = mass_bcgg;
291 delE_tag = delE_tag_temp;
292 cqtm = 0.0;
293
294 iGoodtag.push_back(ik1_temp);
295 iGoodtag.push_back(ik2_temp);
296
297 iGamtag.push_back(iGam1_temp);
298 iGamtag.push_back(iGam2_temp);
299 iGamtag.push_back(9999);
300 iGamtag.push_back(9999);
301
302 ptag = pddd_temp;
303
304 kkpi0md = true;
305 }
306}
EvtRecTrackCol::iterator EvtRecTrackIterator
double abs(const EvtComplex &c)
double sin(const BesAngle a)
double cos(const BesAngle a)
const double theta() const
static void setPidType(PidType pidType)
virtual double probKaon()=0
virtual void preparePID(EvtRecTrack *track)=0
virtual double probPion()=0
virtual bool isVertexValid()=0
virtual double * SigmaPrimaryVertex()=0
virtual double * PrimaryVertex()=0
void setChisqCut(const double chicut=200, const double chiter=0.05)
HepLorentzVector pfit(int n) const
void BuildVirtualParticle(int number)
void AddResonance(int number, double mres, std::vector< int > tlis)
static KalmanKinematicFit * instance()
HepSymMatrix & getZErrorK()
void AddTrack(const int number, const double mass, const RecMdcTrack *trk)
WTrackParameter wtrk(int n) const
void AddVertex(int number, VertexParameter vpar, std::vector< int > lis)
static VertexFit * instance()
void setEvx(const HepSymMatrix &eVx)
void setVx(const HepPoint3D &vx)
_EXTERN_ std::string EvtRecEvent
1.9.6