WebSVN – f9daq – Diff – /belle2/masterclass/src/BParticle.cc


//+
// File : BParticle.cc
// Description : Implementation of BTrack class //
//-
 
#include "BParticle.h"
 
ClassImp (BParticle)
 
 
 BParticle::BParticle ( float px, float py, float pz, float e,
                       float charge, SIMPLEPID pid ) {
   m_px = px;
   m_py = py;
   m_pz = pz;
   m_e = e;
   m_charge = charge;
   m_pid = pid;
 }
 
 
float BParticle::GetMass(SIMPLEPID pid){
 
switch (pid){
        case PHOTON:   return 0;
        case ELECTRON: return 0.51;
        case PION:     return 0.139;
        case MUON:     return 0.105;
        case KAON:     return 0.497;
        case PROTON:   return 0.938;
        case JPSI:     return 3.1;
        case D:        return 1.86;
        case DSTAR:    return 2.01;
        case B:        return 5.27;
        case PHI:      return 1.02;
        default: return 0;
}      
 
}
 
 float BParticle::GetMass ()
 {
   float m2 = m_e * m_e-m_px * m_px-m_py * m_py-m_pz * m_pz;
   if (m2<0) m2=0;
   return sqrt(m2);
 }  
 
 void BParticle::SetEnergyFromMass (float mass)
 {
   m_e = sqrt( mass * mass + m_px * m_px +m_py * m_py +m_pz * m_pz );
   
 }
 
void BParticle::SetEnergyFromPid(){
        SetEnergyFromMass(GetMass(m_pid));
}
 
int SelectParticles(TClonesArray *pin , int charge, SIMPLEPID type, TClonesArray *pout){
  pout->Clear();
  int nprt=0;
 
  for(TIter next(pin); BParticle * p =(BParticle *) next();) {
        if (p->charge()== charge && p->pid()== type ) {
          TClonesArray& list = *pout;
          new (list[nprt++]) BParticle ( *p );
        }
  }      
  return nprt;  
}
 
int CombineParticles(TClonesArray *plist1 ,TClonesArray *plist2 , int same, float masslow, float massup, SIMPLEPID pid, TClonesArray *pout){
 // Loop over all the particles in both lists.
 pout->Clear();
 int nprt=0;
 
 for(TIter next1(plist1);BParticle * p1 =(BParticle *) next1();) {
    // the second loop 
   for( TIter next2 = (plist1!=plist2 && same==0) ?  TIter(plist2): TIter(next1) ; BParticle * p2 =(BParticle *) next2();) {  
      BParticle  p = *p1 + *p2; // Combine two particles into a new particle   
      if (p.InMassRange(masslow, massup)){
            p.SetPid(pid);
                TClonesArray& list = *pout;
            new (list[nprt++]) BParticle ( p ); // create a new entry in kslist list of particles
      }
       
   }
               
 }
 return nprt;
}
 
 
 
 

Rev 267	Rev 271
1	//+	1	//+
2	// File : BParticle.cc	2	// File : BParticle.cc
3	// Description : Implementation of BTrack class //	3	// Description : Implementation of BTrack class //
4	//-	4	//-
5		5
6	#include "BParticle.h"	6	#include "BParticle.h"
7		7
8	ClassImp (BParticle)	8	ClassImp (BParticle)
9		9
10		10
11	BParticle::BParticle ( float px, float py, float pz, float e,	11	BParticle::BParticle ( float px, float py, float pz, float e,
12	float charge, SIMPLEPID pid ) {	12	float charge, SIMPLEPID pid ) {
13	m_px = px;	13	m_px = px;
14	m_py = py;	14	m_py = py;
15	m_pz = pz;	15	m_pz = pz;
16	m_e = e;	16	m_e = e;
17	m_charge = charge;	17	m_charge = charge;
18	m_pid = pid;	18	m_pid = pid;
19	}	19	}
20		20
21		21
22	float BParticle::GetMass(SIMPLEPID pid){	22	float BParticle::GetMass(SIMPLEPID pid){
23		23
24	switch (pid){	24	switch (pid){
25	case PHOTON: return 0;	25	case PHOTON: return 0;
26	case ELECTRON: return 0.51;	26	case ELECTRON: return 0.51;
27	case PION: return 0.139;	27	case PION: return 0.139;
28	case MUON: return 0.105;	28	case MUON: return 0.105;
29	case KAON: return 0.497;	29	case KAON: return 0.497;
30	case PROTON: return 0.938;	30	case PROTON: return 0.938;
31	case JPSI: return 3.1;	31	case JPSI: return 3.1;
32	case D: return 1.86;	32	case D: return 1.86;
33	case DSTAR: return 2.01;	33	case DSTAR: return 2.01;
34	case B: return 5.27;	34	case B: return 5.27;
-		35	case PHI: return 1.02;
35	default: return 0;	36	default: return 0;
36	}	37	}
37		38
38	}	39	}
39		40
40	float BParticle::GetMass ()	41	float BParticle::GetMass ()
41	{	42	{
42	float m2 = m_e * m_e-m_px * m_px-m_py * m_py-m_pz * m_pz;	43	float m2 = m_e * m_e-m_px * m_px-m_py * m_py-m_pz * m_pz;
43	if (m2<0) m2=0;	44	if (m2<0) m2=0;
44	return sqrt(m2);	45	return sqrt(m2);
45	}	46	}
46		47
47	void BParticle::SetEnergyFromMass (float mass)	48	void BParticle::SetEnergyFromMass (float mass)
48	{	49	{
49	m_e = sqrt( mass * mass + m_px * m_px +m_py * m_py +m_pz * m_pz );	50	m_e = sqrt( mass * mass + m_px * m_px +m_py * m_py +m_pz * m_pz );
50		51
51	}	52	}
52		53
53	void BParticle::SetEnergyFromPid(){	54	void BParticle::SetEnergyFromPid(){
54	SetEnergyFromMass(GetMass(m_pid));	55	SetEnergyFromMass(GetMass(m_pid));
55	}	56	}
56		57
57	int SelectParticles(TClonesArray pin , int charge, SIMPLEPID type, TClonesArray pout){	58	int SelectParticles(TClonesArray pin , int charge, SIMPLEPID type, TClonesArray pout){
58	pout->Clear();	59	pout->Clear();
59	int nprt=0;	60	int nprt=0;
60		61
61	for(TIter next(pin); BParticle * p =(BParticle *) next();) {	62	for(TIter next(pin); BParticle * p =(BParticle *) next();) {
62	if (p->charge()== charge && p->pid()== type ) {	63	if (p->charge()== charge && p->pid()== type ) {
63	TClonesArray& list = *pout;	64	TClonesArray& list = *pout;
64	new (list[nprt++]) BParticle ( *p );	65	new (list[nprt++]) BParticle ( *p );
65	}	66	}
66	}	67	}
67	return nprt;	68	return nprt;
68	}	69	}
69		70
70	int CombineParticles(TClonesArray plist1 ,TClonesArray plist2 , int same, float masslow, float massup, SIMPLEPID pid, TClonesArray *pout){	71	int CombineParticles(TClonesArray plist1 ,TClonesArray plist2 , int same, float masslow, float massup, SIMPLEPID pid, TClonesArray *pout){
71	// Loop over all the particles in both lists.	72	// Loop over all the particles in both lists.
72	pout->Clear();	73	pout->Clear();
73	int nprt=0;	74	int nprt=0;
74		75
75	for(TIter next1(plist1);BParticle * p1 =(BParticle *) next1();) {	76	for(TIter next1(plist1);BParticle * p1 =(BParticle *) next1();) {
76	// the second loop	77	// the second loop
77	for( TIter next2 = (plist1!=plist2 && same==0) ? TIter(plist2): TIter(next1) ; BParticle * p2 =(BParticle *) next2();) {	78	for( TIter next2 = (plist1!=plist2 && same==0) ? TIter(plist2): TIter(next1) ; BParticle * p2 =(BParticle *) next2();) {
78	BParticle p = p1 + p2; // Combine two particles into a new particle	79	BParticle p = p1 + p2; // Combine two particles into a new particle
79	if (p.InMassRange(masslow, massup)){	80	if (p.InMassRange(masslow, massup)){
80	p.SetPid(pid);	81	p.SetPid(pid);
81	TClonesArray& list = *pout;	82	TClonesArray& list = *pout;
82	new (list[nprt++]) BParticle ( p ); // create a new entry in kslist list of particles	83	new (list[nprt++]) BParticle ( p ); // create a new entry in kslist list of particles
83	}	84	}
84		85
85	}	86	}
86		87
87	}	88	}
88	return nprt;	89	return nprt;
89	}	90	}
90		91
91		92
92		93
93		94

Subversion Repositories f9daq

(root)/belle2/masterclass/src/BParticle.cc – Rev 267 → 271