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root/cvsroot/UserCode/UHHAnalysis/SFrameTools/src/Utils.cxx

Comparing UserCode/UHHAnalysis/SFrameTools/src/Utils.cxx (file contents):
Revision 1.5 by peiffer, Mon Jul 9 08:37:32 2012 UTC vs.
Revision 1.8 by bazterra, Wed Dec 19 00:02:35 2012 UTC

#	Line 1 | Line 1
1		#include "../include/Utils.h"
2
3
4	<	bool TopTag(TopJet topjet,  double &mjet, int &nsubjets, double &mmin){
5	<
6	<	nsubjets=topjet.numberOfDaughters();
7	<
8	<	LorentzVector allsubjets(0,0,0,0);
9	<
10	<	for(int j=0; j<topjet.numberOfDaughters(); ++j){
11	<	allsubjets += topjet.subjets()[j].v4();
12	<	}
13	<	if(!allsubjets.isTimelike()){
14	<	mjet=0;
15	<	mmin=0;
16	<	return false;
17	<	}
4	>	// global function to define a tagged jet
5
6	<	mjet = allsubjets.M();
7	<
8	<	if(nsubjets>=3) {
9	<
10	<	std::vector<Particle> subjets = topjet.subjets();
11	<	sort(subjets.begin(), subjets.end(), HigherPt());
12	<
13	<	double m01 = 0;
27	<	if( (subjets[0].v4()+subjets[1].v4()).isTimelike())
28	<	m01=(subjets[0].v4()+subjets[1].v4()).M();
29	<	double m02 = 0;
30	<	if( (subjets[0].v4()+subjets[2].v4()).isTimelike() )
31	<	m02=(subjets[0].v4()+subjets[2].v4()).M();
32	<	double m12 = 0;
33	<	if( (subjets[1].v4()+subjets[2].v4()).isTimelike()  )
34	<	m12 = (subjets[1].v4()+subjets[2].v4()).M();
6	>	bool IsTagged(Jet & jet, E_BtagType type)
7	>	{
8	>	if(type==e_CSVL && jet.btag_combinedSecondaryVertex()>0.244) return true;
9	>	if(type==e_CSVM && jet.btag_combinedSecondaryVertex()>0.679) return true;
10	>	if(type==e_CSVT && jet.btag_combinedSecondaryVertex()>0.898) return true;
11	>	if(type==e_JPL && jet.btag_jetProbability()>0.275) return true;
12	>	if(type==e_JPM && jet.btag_jetProbability()>0.545) return true;
13	>	if(type==e_JPT && jet.btag_jetProbability()>0.790) return true;
14
15	<	//minimum pairwise mass
16	<	mmin = std::min(m01,std::min(m02,m12));
17	<	}
15	>	return false;
16	>	}
17	>
18	>	//variable HEP Tagger from Rebekka
19	>
20	>	bool variableHepTopTag(TopJet topjet, double ptJetMin, double massWindowLower, double massWindowUpper, double cutCondition2, double cutCondition3)
21	>	{
22	>	double mjet;
23	>	double ptjet;
24	>	int nsubjets;
25	>
26	>	double topmass=172.3;
27	>	double wmass=80.4;
28	>
29	>	nsubjets=topjet.numberOfDaughters();
30	>
31	>	LorentzVector allsubjets(0,0,0,0);
32	>
33	>	for(int j=0; j<topjet.numberOfDaughters(); ++j) {
34	>	allsubjets += topjet.subjets()[j].v4();
35	>	}
36	>	if(!allsubjets.isTimelike()) {
37	>	mjet=0;
38	>	return false;
39	>	}
40	>
41	>	mjet = allsubjets.M();
42	>	ptjet= allsubjets.Pt();
43	>
44	>	double m12, m13, m23;
45	>
46	>	//The subjetcs have to be three
47	>	if(nsubjets==3) {
48	>
49	>	std::vector<Particle> subjets = topjet.subjets();
50	>	sort(subjets.begin(), subjets.end(), HigherPt());
51	>
52	>	m12 = 0;
53	>	if( (subjets[0].v4()+subjets[1].v4()).isTimelike())
54	>	m12=(subjets[0].v4()+subjets[1].v4()).M();
55	>	m13 = 0;
56	>	if( (subjets[0].v4()+subjets[2].v4()).isTimelike() )
57	>	m13=(subjets[0].v4()+subjets[2].v4()).M();
58	>	m23 = 0;
59	>	if( (subjets[1].v4()+subjets[2].v4()).isTimelike()  )
60	>	m23 = (subjets[1].v4()+subjets[2].v4()).M();
61	>
62	>	} else {
63	>	return false;
64	>	}
65	>
66	>	double rmin=massWindowLower*wmass/topmass;
67	>	double rmax=massWindowUpper*wmass/topmass;
68	>
69	>	int keep=0;
70	>
71	>	//Conditions on the subjects: at least one has to be true
72	>	//1 condition
73	>	if(atan(m13/m12)>0.2 && atan(m13/m12)<1.3 && m23/mjet>rmin && m23/mjet<rmax) keep=1;
74	>
75	>	//2 condition
76	>	double cond2left=pow(rmin,2)*(1+pow((m13/m12),2));
77	>	double cond2cent=1-pow(m23/mjet,2);
78	>	double cond2right=pow(rmax,2)*(1+pow(m13/m12,2));
79	>
80	>	if(cond2left<cond2cent && cond2cent<cond2right && m23/mjet>cutCondition2) keep=1;
81	>
82	>	//3 condition
83	>	double cond3left=pow(rmin,2)*(1+pow((m12/m13),2));
84	>	double cond3cent=1-pow(m23/mjet,2);
85	>	double cond3right=pow(rmax,2)*(1+pow(m12/m13,2));
86	>
87	>	if(cond3left<cond3cent && cond3cent<cond3right && m23/mjet>cutCondition3) keep=1;
88	>
89	>	//Final requirement: at least one of the three subjets conditions and total pt
90	>	if(keep==1 && ptjet>ptJetMin) {
91	>	return true;
92	>	} else {
93	>	return false;
94	>	}
95
40	–	//at least 3 sub-jets
41	–	if(nsubjets<3) return false;
42	–	//minimum pairwise mass > 50 GeV/c^2
43	–	if(mmin<50) return false;
44	–	//jet mass between 140 and 250 GeV/c^2
45	–	if(mjet<140 || mjet>250) return false;
46	–
47	–	return true;
96		}
97
50	–	Jet* nextJet(const Particle *p, std::vector<Jet> *jets){
98
99	<	double deltarmin = double_infinity();
100	<	Jet* nextjet=0;
101	<	for(unsigned int i=0; i<jets->size();++i){
102	<	if(jets->at(i).deltaR(*p) < deltarmin){
103	<	deltarmin = jets->at(i).deltaR(*p);
104	<	nextjet = &jets->at(i);
99	>
100	>
101	>
102	>
103	>	//HEP Tagger from Ivan
104	>
105	>	bool HepTopTag(TopJet topjet)
106	>	{
107	>
108	>	double mjet;
109	>	double ptjet;
110	>	int nsubjets;
111	>
112	>	double topmass=172.3;
113	>	double wmass=80.4;
114	>
115	>	nsubjets=topjet.numberOfDaughters();
116	>
117	>	LorentzVector allsubjets(0,0,0,0);
118	>
119	>	for(int j=0; j<topjet.numberOfDaughters(); ++j) {
120	>	allsubjets += topjet.subjets()[j].v4();
121	>	}
122	>	if(!allsubjets.isTimelike()) {
123	>	mjet=0;
124	>	return false;
125	>	}
126	>
127	>	mjet = allsubjets.M();
128	>	ptjet= allsubjets.Pt();
129	>
130	>	double m12, m13, m23;
131	>
132	>	//The subjetcs have to be three
133	>	if(nsubjets==3) {
134	>
135	>	std::vector<Particle> subjets = topjet.subjets();
136	>	sort(subjets.begin(), subjets.end(), HigherPt());
137	>
138	>	m12 = 0;
139	>	if( (subjets[0].v4()+subjets[1].v4()).isTimelike())
140	>	m12=(subjets[0].v4()+subjets[1].v4()).M();
141	>	m13 = 0;
142	>	if( (subjets[0].v4()+subjets[2].v4()).isTimelike() )
143	>	m13=(subjets[0].v4()+subjets[2].v4()).M();
144	>	m23 = 0;
145	>	if( (subjets[1].v4()+subjets[2].v4()).isTimelike()  )
146	>	m23 = (subjets[1].v4()+subjets[2].v4()).M();
147	>
148	>	} else {
149	>	return false;
150	>	}
151	>
152	>	double rmin=0.85*wmass/topmass;
153	>	double rmax=1.15*wmass/topmass;
154	>
155	>	int keep=0;
156	>
157	>	//Conditions on the subjects: at least one has to be true
158	>	//1 condition
159	>	if(atan(m13/m12)>0.2 && atan(m13/m12)<1.3 && m23/mjet>rmin && m23/mjet<rmax) keep=1;
160	>
161	>	//2 condition
162	>	double cond2left=pow(rmin,2)*(1+pow((m13/m12),2));
163	>	double cond2cent=1-pow(m23/mjet,2);
164	>	double cond2right=pow(rmax,2)*(1+pow(m13/m12,2));
165	>
166	>	if(cond2left<cond2cent && cond2cent<cond2right && m23/mjet>0.35) keep=1;
167	>
168	>	//3 condition
169	>	double cond3left=pow(rmin,2)*(1+pow((m12/m13),2));
170	>	double cond3cent=1-pow(m23/mjet,2);
171	>	double cond3right=pow(rmax,2)*(1+pow(m12/m13,2));
172	>
173	>	if(cond3left<cond3cent && cond3cent<cond3right && m23/mjet>0.35) keep=1;
174	>
175	>	//Final requirement: at least one of the three subjets conditions and total pt
176	>	if(keep==1 && ptjet>200) {
177	>	return true;
178	>	} else {
179	>	return false;
180		}
59	–	}
181
61	–	return nextjet;
182		}
183
64	–	bool WTag(TopJet prunedjet,  double& mjet, int &nsubjets, double& massdrop){
184
185	<	nsubjets=prunedjet.numberOfDaughters();
185	>	//default values (mminLower=50., mjetLower=140, mjetUpper=250.) defined in Utils.h
186	>	bool variableTopTag(TopJet topjet, double &mjet, int &nsubjets, double &mmin, double mminLower, double mjetLower, double mjetUpper)
187	>	{
188
189	<	mjet = 0;
69	<	if(prunedjet.v4().isTimelike())
70	<	mjet = prunedjet.v4().M();
189	>	nsubjets=topjet.numberOfDaughters();
190
191	<	//calculate mass drop for first sub-jet ordered in pt
73	<	massdrop = 0;
74	<	if(nsubjets>=1 && mjet>0){
191	>	LorentzVector allsubjets(0,0,0,0);
192
193	<	std::vector< Particle > subjets = prunedjet.subjets();
194	<	sort(subjets.begin(), subjets.end(), HigherPt());
193	>	for(int j=0; j<topjet.numberOfDaughters(); ++j) {
194	>	allsubjets += topjet.subjets()[j].v4();
195	>	}
196	>	if(!allsubjets.isTimelike()) {
197	>	mjet=0;
198	>	mmin=0;
199	>	//  mminLower=50;
200	>	//   mjetLower=140;
201	>	//   mjetUpper=250;
202	>	return false;
203	>	}
204
205	<	double m1 = 0;
80	<	if(subjets[0].v4().isTimelike())
81	<	m1 = subjets[0].v4().M();
205	>	mjet = allsubjets.M();
206
207	<	massdrop = m1/mjet;
84	<	}
85	<
86	<	//at least 2 sub-jets
87	<	if(nsubjets<2) return false;
88	<	//60 GeV < pruned jet mass < 100 GeV
89	<	if(mjet <= 60 || mjet >= 100) return false;
90	<	//mass drop < 0.4
91	<	if(massdrop>=0.4) return false;
207	>	if(nsubjets>=3) {
208
209	<	return true;
209	>	std::vector<Particle> subjets = topjet.subjets();
210	>	sort(subjets.begin(), subjets.end(), HigherPt());
211
212	+	double m01 = 0;
213	+	if( (subjets[0].v4()+subjets[1].v4()).isTimelike())
214	+	m01=(subjets[0].v4()+subjets[1].v4()).M();
215	+	double m02 = 0;
216	+	if( (subjets[0].v4()+subjets[2].v4()).isTimelike() )
217	+	m02=(subjets[0].v4()+subjets[2].v4()).M();
218	+	double m12 = 0;
219	+	if( (subjets[1].v4()+subjets[2].v4()).isTimelike() )
220	+	m12 = (subjets[1].v4()+subjets[2].v4()).M();
221	+
222	+	//minimum pairwise mass
223	+	mmin = std::min(m01,std::min(m02,m12));
224	+	}
225	+
226	+	//at least 3 sub-jets
227	+	if(nsubjets<3) return false;
228	+	//minimum pairwise mass > 50 GeV/c^2
229	+	if(mmin<mminLower) return false;
230	+	//jet mass between 140 and 250 GeV/c^2
231	+	if(mjet<mjetLower || mjet>mjetUpper) return false;
232	+
233	+	return true;
234		}
235
97	–	double pTrel(const Particle *p, std::vector<Jet> *jets){
236
237	<	double ptrel=0;
237	>	bool TopTag(TopJet topjet,  double &mjet, int &nsubjets, double &mmin)
238	>	{
239	>
240	>	nsubjets=topjet.numberOfDaughters();
241	>
242	>	LorentzVector allsubjets(0,0,0,0);
243	>
244	>	for(int j=0; j<topjet.numberOfDaughters(); ++j) {
245	>	allsubjets += topjet.subjets()[j].v4();
246	>	}
247	>	if(!allsubjets.isTimelike()) {
248	>	mjet=0;
249	>	mmin=0;
250	>	return false;
251	>	}
252	>
253	>	mjet = allsubjets.M();
254	>
255	>	if(nsubjets>=3) {
256
257	<	Jet* nextjet =  nextJet(p,jets);
257	>	std::vector<Particle> subjets = topjet.subjets();
258	>	sort(subjets.begin(), subjets.end(), HigherPt());
259
260	<	TVector3 p3(p->v4().Px(),p->v4().Py(),p->v4().Pz());
261	<	TVector3 jet3(nextjet->v4().Px(),nextjet->v4().Py(),nextjet->v4().Pz());
260	>	double m01 = 0;
261	>	if( (subjets[0].v4()+subjets[1].v4()).isTimelike())
262	>	m01=(subjets[0].v4()+subjets[1].v4()).M();
263	>	double m02 = 0;
264	>	if( (subjets[0].v4()+subjets[2].v4()).isTimelike() )
265	>	m02=(subjets[0].v4()+subjets[2].v4()).M();
266	>	double m12 = 0;
267	>	if( (subjets[1].v4()+subjets[2].v4()).isTimelike()  )
268	>	m12 = (subjets[1].v4()+subjets[2].v4()).M();
269
270	<	if(p3.Mag()!=0 && jet3.Mag()!=0){
271	<	double sin_alpha = (p3.Cross(jet3)).Mag()/p3.Mag()/jet3.Mag();
272	<	ptrel = p3.Mag()*sin_alpha;
273	<	}
274	<	else{
275	<	std::cout << "something strange happend in the ptrel calculation: either lepton or jet momentum is 0" <<std::endl;
276	<	}
270	>	//minimum pairwise mass
271	>	mmin = std::min(m01,std::min(m02,m12));
272	>	}
273	>
274	>	//at least 3 sub-jets
275	>	if(nsubjets<3) return false;
276	>	//minimum pairwise mass > 50 GeV/c^2
277	>	if(mmin<50) return false;
278	>	//jet mass between 140 and 250 GeV/c^2
279	>	if(mjet<140 || mjet>250) return false;
280	>
281	>	return true;
282	>	}
283	>
284	>	Jet* nextJet(const Particle *p, std::vector<Jet> *jets)
285	>	{
286	>
287	>	double deltarmin = double_infinity();
288	>	Jet* nextjet=0;
289	>	for(unsigned int i=0; i<jets->size(); ++i) {
290	>	if(jets->at(i).deltaR(*p) < deltarmin) {
291	>	deltarmin = jets->at(i).deltaR(*p);
292	>	nextjet = &jets->at(i);
293	>	}
294	>	}
295
296	<	return ptrel;
296	>	return nextjet;
297		}
298
299	<	double deltaRmin(const Particle *p, std::vector<Jet> *jets){
300	<	return nextJet(p,jets)->deltaR(*p);
299	>	bool WTag(TopJet prunedjet,  double& mjet, int &nsubjets, double& massdrop)
300	>	{
301	>
302	>	nsubjets=prunedjet.numberOfDaughters();
303	>
304	>	mjet = 0;
305	>	if(prunedjet.v4().isTimelike())
306	>	mjet = prunedjet.v4().M();
307	>
308	>	//calculate mass drop for first sub-jet ordered in pt
309	>	massdrop = 0;
310	>	if(nsubjets>=1 && mjet>0) {
311	>
312	>	std::vector< Particle > subjets = prunedjet.subjets();
313	>	sort(subjets.begin(), subjets.end(), HigherPt());
314	>
315	>	double m1 = 0;
316	>	if(subjets[0].v4().isTimelike())
317	>	m1 = subjets[0].v4().M();
318	>
319	>	massdrop = m1/mjet;
320	>	}
321	>
322	>	//at least 2 sub-jets
323	>	if(nsubjets<2) return false;
324	>	//60 GeV < pruned jet mass < 100 GeV
325	>	if(mjet <= 60 || mjet >= 100) return false;
326	>	//mass drop < 0.4
327	>	if(massdrop>=0.4) return false;
328	>
329	>	return true;
330	>
331		}
332
333	<	TVector3 toVector(LorentzVector v4){
333	>	double pTrel(const Particle *p, std::vector<Jet> *jets)
334	>	{
335	>
336	>	double ptrel=0;
337
338	<	TVector3 v3(0,0,0);
339	<	v3.SetX(v4.X());
340	<	v3.SetY(v4.Y());
341	<	v3.SetZ(v4.Z());
342	<	return v3;
338	>	Jet* nextjet =  nextJet(p,jets);
339	>
340	>	TVector3 p3(p->v4().Px(),p->v4().Py(),p->v4().Pz());
341	>	TVector3 jet3(nextjet->v4().Px(),nextjet->v4().Py(),nextjet->v4().Pz());
342	>
343	>	if(p3.Mag()!=0 && jet3.Mag()!=0) {
344	>	double sin_alpha = (p3.Cross(jet3)).Mag()/p3.Mag()/jet3.Mag();
345	>	ptrel = p3.Mag()*sin_alpha;
346	>	} else {
347	>	std::cout << "something strange happend in the ptrel calculation: either lepton or jet momentum is 0" <<std::endl;
348	>	}
349	>
350	>	return ptrel;
351	>	}
352	>
353	>	double deltaRmin(const Particle *p, std::vector<Jet> *jets)
354	>	{
355	>	return nextJet(p,jets)->deltaR(*p);
356		}
357
358	<	TVector3 toVector(LorentzVectorXYZE v4){
358	>	TVector3 toVector(LorentzVector v4)
359	>	{
360
361	<	TVector3 v3(0,0,0);
362	<	v3.SetX(v4.X());
363	<	v3.SetY(v4.Y());
364	<	v3.SetZ(v4.Z());
365	<	return v3;
361	>	TVector3 v3(0,0,0);
362	>	v3.SetX(v4.X());
363	>	v3.SetY(v4.Y());
364	>	v3.SetZ(v4.Z());
365	>	return v3;
366		}
367
368	<	LorentzVectorXYZE toXYZ(LorentzVector v4){
368	>	TVector3 toVector(LorentzVectorXYZE v4)
369	>	{
370
371	<	LorentzVectorXYZE v4_new(0,0,0,0);
372	<	v4_new.SetPx(v4.Px());
373	<	v4_new.SetPy(v4.Py());
374	<	v4_new.SetPz(v4.Pz());
375	<	v4_new.SetE(v4.E());
146	<	return v4_new;
371	>	TVector3 v3(0,0,0);
372	>	v3.SetX(v4.X());
373	>	v3.SetY(v4.Y());
374	>	v3.SetZ(v4.Z());
375	>	return v3;
376		}
377
378	<	LorentzVector toPtEtaPhi(LorentzVectorXYZE v4){
378	>	LorentzVectorXYZE toXYZ(LorentzVector v4)
379	>	{
380
381	<	LorentzVector v4_new(0,0,0,0);
382	<	v4_new.SetPt(v4.Pt());
383	<	v4_new.SetEta(v4.Eta());
384	<	v4_new.SetPhi(v4.Phi());
385	<	v4_new.SetE(v4.E());
386	<	return v4_new;
381	>	LorentzVectorXYZE v4_new(0,0,0,0);
382	>	v4_new.SetPx(v4.Px());
383	>	v4_new.SetPy(v4.Py());
384	>	v4_new.SetPz(v4.Pz());
385	>	v4_new.SetE(v4.E());
386	>	return v4_new;
387		}
388
389	<	double deltaR(LorentzVector v1, LorentzVector v2){
389	>	LorentzVector toPtEtaPhi(LorentzVectorXYZE v4)
390	>	{
391	>
392	>	LorentzVector v4_new(0,0,0,0);
393	>	v4_new.SetPt(v4.Pt());
394	>	v4_new.SetEta(v4.Eta());
395	>	v4_new.SetPhi(v4.Phi());
396	>	v4_new.SetE(v4.E());
397	>	return v4_new;
398	>	}
399	>
400	>	double deltaR(LorentzVector v1, LorentzVector v2)
401	>	{
402	>
403	>	Particle p1;
404	>	p1.set_v4(v1);
405	>	Particle p2;
406	>	p2.set_v4(v2);
407	>	return p1.deltaR(p2);
408	>	}
409
410	<	Particle p1;
411	<	p1.set_v4(v1);
412	<	Particle p2;
164	<	p2.set_v4(v2);
165	<	return p1.deltaR(p2);
410	>	double double_infinity()
411	>	{
412	>	return std::numeric_limits<double>::infinity() ;
413		}
414
415	<	double double_infinity(){
416	<	return std::numeric_limits<double>::infinity() ;
415	>	int int_infinity()
416	>	{
417	>	return std::numeric_limits<int>::max() ;
418		}
419
420	<	int int_infinity(){
421	<	return std::numeric_limits<int>::max() ;
420	>	int myPow(int x, unsigned int p)
421	>	{
422	>	int i = 1;
423	>	for (unsigned int j = 1; j <= p; j++)  i *= x;
424	>	return i;
425		}
426
427	<	int myPow(int x, unsigned int p) {
428	<	int i = 1;
429	<	for (unsigned int j = 1; j <= p; j++)  i *= x;
430	<	return i;
427	>	int JetFlavor(Jet *jet)
428	>	{
429	>
430	>	EventCalc* calc = EventCalc::Instance();
431	>
432	>	std::vector< GenParticle >* genparticles = calc->GetGenParticles();
433	>	if(genparticles) {
434	>
435	>	//fill pdg IDs of all matched GenParticles
436	>	std::vector<int> matched_genparticle_ids;
437	>	for(unsigned int i=0; i<genparticles->size(); ++i) {
438	>
439	>	GenParticle genp = genparticles->at(i);
440	>
441	>	//only take status 3 particles into account
442	>	if(genp.status()!=3) continue;
443	>
444	>	if(jet->deltaR(genp)<0.5)
445	>	matched_genparticle_ids.push_back(genp.pdgId());
446	>	}
447	>
448	>	//search for b quarks first
449	>	for(unsigned int i=0; i<matched_genparticle_ids.size(); ++i) {
450	>	if(abs(matched_genparticle_ids[i])==5) return matched_genparticle_ids[i];
451	>	}
452	>	//no b quark -> search for c quarks
453	>	for(unsigned int i=0; i<matched_genparticle_ids.size(); ++i) {
454	>	if(abs(matched_genparticle_ids[i])==4) return matched_genparticle_ids[i];
455	>	}
456	>	for(unsigned int i=0; i<matched_genparticle_ids.size(); ++i) {
457	>	if(abs(matched_genparticle_ids[i])==3) return matched_genparticle_ids[i];
458	>	}
459	>	for(unsigned int i=0; i<matched_genparticle_ids.size(); ++i) {
460	>	if(abs(matched_genparticle_ids[i])==2) return matched_genparticle_ids[i];
461	>	}
462	>	for(unsigned int i=0; i<matched_genparticle_ids.size(); ++i) {
463	>	if(abs(matched_genparticle_ids[i])==1) return matched_genparticle_ids[i];
464	>	}
465	>	for(unsigned int i=0; i<matched_genparticle_ids.size(); ++i) {
466	>	if(abs(matched_genparticle_ids[i])==21) return matched_genparticle_ids[i];
467	>	}
468	>
469	>	}
470	>
471	>	//no matched GenParticle -> return default value 0
472	>	return 0;
473	>
474		}

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