BOSS 6.6.4.p01
BESIII Offline Software System
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Public Member Functions | List of all members
EvtChi1BB2 Class Reference

#include <EvtChi1BB2.hh>

+ Inheritance diagram for EvtChi1BB2:

Public Member Functions

 EvtChi1BB2 ()
 
virtual ~EvtChi1BB2 ()
 
void getName (std::string &name)
 
EvtDecayBase * clone ()
 
void decay (EvtParticle *p)
 
void init ()
 
- Public Member Functions inherited from EvtDecayAmp
void makeDecay (EvtParticle *p)
 
void setWeight (double weight)
 
void vertex (const EvtComplex &amp)
 
void vertex (int i1, const EvtComplex &amp)
 
void vertex (int i1, int i2, const EvtComplex &amp)
 
void vertex (int i1, int i2, int i3, const EvtComplex &amp)
 
void vertex (int *i1, const EvtComplex &amp)
 
virtual ~EvtDecayAmp ()
 
- Public Member Functions inherited from EvtDecayBase
virtual void getName (std::string &name)=0
 
virtual void decay (EvtParticle *p)=0
 
virtual void makeDecay (EvtParticle *p)=0
 
virtual EvtDecayBase * clone ()=0
 
virtual void init ()
 
virtual void initProbMax ()
 
virtual std::string commandName ()
 
virtual void command (std::string cmd)
 
double getProbMax (double prob)
 
double resetProbMax (double prob)
 
 EvtDecayBase ()
 
virtual ~EvtDecayBase ()
 
virtual bool matchingDecay (const EvtDecayBase &other) const
 
EvtId getParentId ()
 
double getBranchingFraction ()
 
void disableCheckQ ()
 
void checkQ ()
 
int getNDaug ()
 
EvtId * getDaugs ()
 
EvtId getDaug (int i)
 
int getNArg ()
 
int getPHOTOS ()
 
void setPHOTOS ()
 
void setVerbose ()
 
void setSummary ()
 
double * getArgs ()
 
std::string * getArgsStr ()
 
double getArg (int j)
 
std::string getArgStr (int j)
 
std::string getModelName ()
 
int getDSum ()
 
int summary ()
 
int verbose ()
 
void saveDecayInfo (EvtId ipar, int ndaug, EvtId *daug, int narg, std::vector< std::string > &args, std::string name, double brfr)
 
void printSummary ()
 
void setProbMax (double prbmx)
 
void noProbMax ()
 
void checkNArg (int a1, int a2=-1, int a3=-1, int a4=-1)
 
void checkNDaug (int d1, int d2=-1)
 
void checkSpinParent (EvtSpinType::spintype sp)
 
void checkSpinDaughter (int d1, EvtSpinType::spintype sp)
 
virtual int nRealDaughters ()
 

Additional Inherited Members

- Static Public Member Functions inherited from EvtDecayBase
static void findMasses (EvtParticle *p, int ndaugs, EvtId daugs[10], double masses[10])
 
static void findMass (EvtParticle *p)
 
static double findMaxMass (EvtParticle *p)
 
- Protected Member Functions inherited from EvtDecayBase
bool daugsDecayedByParentModel ()
 
- Protected Attributes inherited from EvtDecayAmp
EvtAmp _amp2
 
- Protected Attributes inherited from EvtDecayBase
bool _daugsDecayedByParentModel
 

Detailed Description

Definition at line 28 of file EvtChi1BB2.hh.

Constructor & Destructor Documentation

◆ EvtChi1BB2()

EvtChi1BB2::EvtChi1BB2 ( )
inline

Definition at line 32 of file EvtChi1BB2.hh.

32{}

Referenced by clone().

◆ ~EvtChi1BB2()

EvtChi1BB2::~EvtChi1BB2 ( )
virtual

Definition at line 36 of file EvtChi1BB2.cc.

36{}

Member Function Documentation

◆ clone()

EvtDecayBase * EvtChi1BB2::clone ( )
virtual

Implements EvtDecayBase.

Definition at line 45 of file EvtChi1BB2.cc.

45 {
46
47 return new EvtChi1BB2;
48
49}

◆ decay()

void EvtChi1BB2::decay ( EvtParticle *  p)
virtual

Implements EvtDecayBase.

Definition at line 70 of file EvtChi1BB2.cc.

70 {
71
72 p->initializePhaseSpace(getNDaug(),getDaugs());
73
74 EvtParticle *v,*s1;
75 EvtVector4R pv,ps,ppr;
76
77 v =p->getDaug(0);
78 s1=p->getDaug(1);
79 pv=v->getP4();
80 ps=s1->getP4();
81 ppr=p->getP4();
82
83// Put phase space results into the daughters.
84 EvtHelSys angles(ppr,pv); //using helicity sys. angles
85 double theta =angles.getHelAng(1);
86 double phi =angles.getHelAng(2);
87 double gamma=0;
88
89/* double alpha=getArg(0);
90 double F01=sqrt((1+alpha)/2);
91 double F00=sqrt((1-alpha)/4);
92*/
93 double F00=getArg(0);
94 double F01=getArg(1);
95 double F03=getArg(2);
96 double F11=getArg(3);
97 double F33=-F00; double F32=-F01; double F30=-F03;
98 double F10=F01; double F23=-F10; double F22=-F11;
99//cout<<"********F00,F01,F03,F10,F11,F22,F23,F30,F32,F33="<<F00<<F01<<F03<<F10<<F11<<F22<<F23<<F30<<F32<<F33<<endl;
100/*cout<<"********Djmn(1, 1, 0,phi,theta,gamma)="<<Djmn(1, 1, 0,phi,theta,gamma);
101cout<<"********Djmn(1, 1,-1,phi,theta,gamma)="<<Djmn(1, 1,-1,phi,theta,gamma);
102cout<<"********Djmn(1, 1, 1,phi,theta,gamma)="<<Djmn(1, 1, 1,phi,theta,gamma);
103*/
104 int j1,j2,j3;
105 for(j1=0;j1<=2;){
106 for(j2=0;j2<=3;){
107 for(j3=0;j3<=3;){
108 vertex(j1,j2,j3,0.0);j3++;}
109j2++;}
110j1++;}
111
112 vertex(0,0,0,Djmn(1, 1, 0,phi,theta,gamma)*F00);//Chi1 helicity =1 corresponding index=0
113 vertex(0,0,1,Djmn(1, 1,-1,phi,theta,gamma)*F01);
114 vertex(0,0,3,Djmn(1, 1, 1,phi,theta,gamma)*F03);
115 vertex(0,1,0,Djmn(1, 1, 1,phi,theta,gamma)*F10);
116 vertex(0,1,1,Djmn(1, 1, 0,phi,theta,gamma)*F11);
117 vertex(0,2,2,Djmn(1, 1, 0,phi,theta,gamma)*F22);
118 vertex(0,2,3,Djmn(1, 1,-1,phi,theta,gamma)*F23);
119 vertex(0,3,0,Djmn(1, 1,-1,phi,theta,gamma)*F30);
120 vertex(0,3,2,Djmn(1, 1, 1,phi,theta,gamma)*F32);
121 vertex(0,3,3,Djmn(1, 1, 0,phi,theta,gamma)*F33);
122
123 vertex(1,0,0,Djmn(1,-1, 0,phi,theta,gamma)*F00);//Chi1 helicity =-1 corresponding index=1
124 vertex(1,0,1,Djmn(1,-1,-1,phi,theta,gamma)*F01);
125 vertex(1,0,3,Djmn(1,-1, 1,phi,theta,gamma)*F03);
126 vertex(1,1,0,Djmn(1,-1, 1,phi,theta,gamma)*F10);
127 vertex(1,1,1,Djmn(1,-1, 0,phi,theta,gamma)*F11);
128 vertex(1,2,2,Djmn(1,-1, 0,phi,theta,gamma)*F22);
129 vertex(1,2,3,Djmn(1,-1,-1,phi,theta,gamma)*F23);
130 vertex(1,3,0,Djmn(1,-1,-1,phi,theta,gamma)*F30);
131 vertex(1,3,2,Djmn(1,-1, 1,phi,theta,gamma)*F32);
132 vertex(1,3,3,Djmn(1,-1, 0,phi,theta,gamma)*F33);
133
134 vertex(2,0,0,Djmn(1, 0, 0,phi,theta,gamma)*F00);//Chi1 helicity =0 corresponding index=2
135 vertex(2,0,1,Djmn(1, 0,-1,phi,theta,gamma)*F01);
136 vertex(2,0,3,Djmn(1, 0, 1,phi,theta,gamma)*F03);
137 vertex(2,1,0,Djmn(1, 0, 1,phi,theta,gamma)*F10);
138 vertex(2,1,1,Djmn(1, 0, 0,phi,theta,gamma)*F11);
139 vertex(2,2,2,Djmn(1, 0, 0,phi,theta,gamma)*F22);
140 vertex(2,2,3,Djmn(1, 0,-1,phi,theta,gamma)*F23);
141 vertex(2,3,0,Djmn(1, 0,-1,phi,theta,gamma)*F30);
142 vertex(2,3,2,Djmn(1, 0, 1,phi,theta,gamma)*F32);
143 vertex(2,3,3,Djmn(1, 0, 0,phi,theta,gamma)*F33);
144
145 return ;
146
147}
Djmn
EvtComplex Djmn(int j, int m, int n, double phi, double theta, double gamma)
Definition: EvtHelSys.cc:151
v
**********Class see also m_nmax DOUBLE PRECISION m_amel DOUBLE PRECISION m_x2 DOUBLE PRECISION m_alfinv DOUBLE PRECISION m_Xenph INTEGER m_KeyWtm INTEGER m_idyfs DOUBLE PRECISION m_zini DOUBLE PRECISION m_q2 DOUBLE PRECISION m_Wt_KF DOUBLE PRECISION m_WtCut INTEGER m_KFfin *COMMON c_KarLud $ !Input CMS energy[GeV] $ !CMS energy after beam spread beam strahlung[GeV] $ !Beam energy spread[GeV] $ !z boost due to beam spread $ !electron beam mass *ff pair spectrum $ !minimum v
Definition: KarLud.h:35
EvtDecayAmp::vertex
void vertex(const EvtComplex &amp)
Definition: EvtDecayAmp.hh:37
EvtDecayBase::getArg
double getArg(int j)
Definition: EvtDecayBase.cc:564
EvtDecayBase::getDaugs
EvtId * getDaugs()
Definition: EvtDecayBase.hh:65
EvtParticle::getP4
const EvtVector4R & getP4() const
Definition: EvtParticle.cc:121
EvtParticle::getDaug
EvtParticle * getDaug(int i)
Definition: EvtParticle.cc:85
EvtParticle::initializePhaseSpace
double initializePhaseSpace(int numdaughter, EvtId *daughters, double poleSize=-1., int whichTwo1=0, int whichTwo2=1)
Definition: EvtParticle.cc:1069

◆ getName()

void EvtChi1BB2::getName ( std::string &  name)
virtual

Implements EvtDecayBase.

Definition at line 38 of file EvtChi1BB2.cc.

38 {
39
40 model_name="Chi1BB2";
41
42}

◆ init()

void EvtChi1BB2::init ( )
virtual

Reimplemented from EvtDecayBase.

Definition at line 51 of file EvtChi1BB2.cc.

51 {
52// check that there are 1 arguments
53 checkNArg(4);
54 checkNDaug(2);
55 checkSpinParent(EvtSpinType::VECTOR);
56 checkSpinDaughter(0,EvtSpinType::RARITASCHWINGER);
57 checkSpinDaughter(1,EvtSpinType::RARITASCHWINGER);
58
59 }
EvtDecayBase::checkSpinDaughter
void checkSpinDaughter(int d1, EvtSpinType::spintype sp)
Definition: EvtDecayBase.cc:533
EvtDecayBase::checkSpinParent
void checkSpinParent(EvtSpinType::spintype sp)
Definition: EvtDecayBase.cc:520
EvtDecayBase::checkNDaug
void checkNDaug(int d1, int d2=-1)
Definition: EvtDecayBase.cc:504
EvtDecayBase::checkNArg
void checkNArg(int a1, int a2=-1, int a3=-1, int a4=-1)
Definition: EvtDecayBase.cc:482
The documentation for this class was generated from the following files: