BOSS 7.0.9
BESIII Offline Software System
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Public Member Functions | Public Attributes | List of all members
EvtJ2BB1 Class Reference

#include <EvtJ2BB1.hh>

+ Inheritance diagram for EvtJ2BB1:

Public Member Functions

 EvtJ2BB1 ()
 
virtual ~EvtJ2BB1 ()
 
void getName (std::string &name)
 
EvtDecayBase * clone ()
 
void decay (EvtParticle *p)
 
void init ()
 
void init (int, double *)
 
 EvtJ2BB1 ()
 
virtual ~EvtJ2BB1 ()
 
void getName (std::string &name)
 
EvtDecayBase * clone ()
 
void decay (EvtParticle *p)
 
void init ()
 
void init (int, double *)
 
- 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 ()
 
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 ()
 
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 ()
 

Public Attributes

double alpha
 
double u
 

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)
 
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 ()
 
bool daugsDecayedByParentModel ()
 
- Protected Attributes inherited from EvtDecayAmp
EvtAmp _amp2
 
- Protected Attributes inherited from EvtDecayBase
bool _daugsDecayedByParentModel
 

Detailed Description

Definition at line 29 of file bak-BesEvtGen-00-04-08/src/EvtGen/EvtGenModels/EvtJ2BB1.hh.

Constructor & Destructor Documentation

◆ EvtJ2BB1() [1/2]

EvtJ2BB1::EvtJ2BB1 ( )
inline

Definition at line 33 of file bak-BesEvtGen-00-04-08/src/EvtGen/EvtGenModels/EvtJ2BB1.hh.

33{}

Referenced by clone().

◆ ~EvtJ2BB1() [1/2]

EvtJ2BB1::~EvtJ2BB1 ( )
virtual

Definition at line 36 of file bak-BesEvtGen-00-04-08/src/EvtGen/EvtGenModels/EvtJ2BB1.cc.

36{}

◆ EvtJ2BB1() [2/2]

EvtJ2BB1::EvtJ2BB1 ( )
inline

Definition at line 33 of file BesEvtGen-00-04-08/src/EvtGen/EvtGenModels/EvtJ2BB1.hh.

33{}

◆ ~EvtJ2BB1() [2/2]

virtual EvtJ2BB1::~EvtJ2BB1 ( )
virtual

Member Function Documentation

◆ clone() [1/2]

EvtDecayBase * EvtJ2BB1::clone ( )
virtual

Implements EvtDecayBase.

Definition at line 45 of file bak-BesEvtGen-00-04-08/src/EvtGen/EvtGenModels/EvtJ2BB1.cc.

45 {
46
47 return new EvtJ2BB1;
48
49}

◆ clone() [2/2]

EvtDecayBase * EvtJ2BB1::clone ( )
virtual

Implements EvtDecayBase.

◆ decay() [1/2]

void EvtJ2BB1::decay ( EvtParticle *  p)
virtual

Implements EvtDecayBase.

Definition at line 65 of file bak-BesEvtGen-00-04-08/src/EvtGen/EvtGenModels/EvtJ2BB1.cc.

65 {
66
67 p->initializePhaseSpace(getNDaug(),getDaugs());
68
69 EvtParticle *v,*s1;
70 EvtVector4R pv,ps,ppr;
71
72 v =p->getDaug(0); //Baryon
73 s1=p->getDaug(1); //Baryon
74 pv=v->getP4();
75 ps=s1->getP4();
76 ppr=p->getP4();
77// Put phase space results into the daughters.
78
79 EvtHelSys angles(ppr,pv); //using helicity sys.angles
80 double theta=angles.getHelAng(1);
81 double phi =angles.getHelAng(2);
82 double gamma=0;
83 double costheta=cos(theta); //using helicity angles in parent system
84// double costheta=ppr.get(3)/ppr.d3mag(); //using Lab system
85
86 if(getNArg()>0){ alpha=getArg(0);}
87 else{double mass_b1 = EvtPDL::getMass(getDaug(0));
88 double mass_b2 = EvtPDL::getMass(getDaug(1));
89 double mass_M = EvtPDL::getMass(getParentId());
90 double c1=pow(pv.d3mag(),2.0);
91 double R=(mass_b1+pv.get(0))*(mass_b2+ps.get(0));
92 u=pow((R-c1)/(R+c1),2.0);
93 alpha=(pow(4+u,2.0)-u*pow(2+3*u,2.0))/(pow(4+u,2.0)+u*pow(2+3*u,2.0));}
94
95 double F01=sqrt((1+alpha)/2);
96 double F00=sqrt((1-alpha)/4);
97 double F10=F01;
98 double F11=F00;
99
100 vertex(0,0,0,Djmn(1, 1, 0,phi,theta,gamma)*F00); // J/psi helicity =1 corresponding index=0
101 vertex(0,0,1,Djmn(1, 1, 1,phi,theta,gamma)*F01);
102 vertex(0,1,0,Djmn(1, 1,-1,phi,theta,gamma)*F10);
103 vertex(0,1,1,Djmn(1, 1, 0,phi,theta,gamma)*F11);
104 vertex(1,0,0,Djmn(1,-1, 0,phi,theta,gamma)*F00); // J/psi helicity =-1 corresponding index=1
105 vertex(1,0,1,Djmn(1,-1, 1,phi,theta,gamma)*F01);
106 vertex(1,1,0,Djmn(1,-1,-1,phi,theta,gamma)*F10);
107 vertex(1,1,1,Djmn(1,-1, 0,phi,theta,gamma)*F11);
108 vertex(2,0,0,Djmn(1, 0, 0,phi,theta,gamma)*F00); // J/psi helicity =0 corresponding index=2
109 vertex(2,0,1,Djmn(1, 0, 1,phi,theta,gamma)*F01);
110 vertex(2,1,0,Djmn(1, 0,-1,phi,theta,gamma)*F10);
111 vertex(2,1,1,Djmn(1, 0, 0,phi,theta,gamma)*F11);
112
113
114 return ;
115
116}
cos
double cos(const BesAngle a)
Definition: BesAngle.h:213
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
Djmn
EvtComplex Djmn(int j, int m, int n, double phi, double theta, double gamma)
Definition: bak-BesEvtGen-00-04-08/src/EvtGen/EvtGenBase/EvtHelSys.cc:151
EvtParticle::initializePhaseSpace
double initializePhaseSpace(int numdaughter, EvtId *daughters, double poleSize=-1., int whichTwo1=0, int whichTwo2=1)
Definition: bak-BesEvtGen-00-04-08/src/EvtGen/EvtGenBase/EvtParticle.cc:1071
rb::R
complex_t R(double Q2, double M2, double G, double Mp2, double Mm2)
Definition: TUtil.h:27
costheta
float costheta
Definition: prepare_data.cxx:28

◆ decay() [2/2]

void EvtJ2BB1::decay ( EvtParticle *  p)
virtual

Implements EvtDecayBase.

◆ getName() [1/2]

void EvtJ2BB1::getName ( std::string &  name)
virtual

Implements EvtDecayBase.

Definition at line 38 of file bak-BesEvtGen-00-04-08/src/EvtGen/EvtGenModels/EvtJ2BB1.cc.

38 {
39
40 model_name="J2BB1";
41
42}

◆ getName() [2/2]

void EvtJ2BB1::getName ( std::string &  name)
virtual

Implements EvtDecayBase.

◆ init() [1/4]

void EvtJ2BB1::init ( )
virtual

Reimplemented from EvtDecayBase.

Definition at line 58 of file bak-BesEvtGen-00-04-08/src/EvtGen/EvtGenModels/EvtJ2BB1.cc.

58 {
59 checkNDaug(2);
60 checkSpinParent(EvtSpinType::VECTOR);
61 checkSpinDaughter(0,EvtSpinType::DIRAC);
62 checkSpinDaughter(1,EvtSpinType::DIRAC);
63}
EvtDecayBase::checkSpinDaughter
void checkSpinDaughter(int d1, EvtSpinType::spintype sp)
Definition: bak-BesEvtGen-00-04-08/src/EvtGen/EvtGenBase/EvtDecayBase.cc:533

◆ init() [2/4]

void EvtJ2BB1::init ( )
virtual

Reimplemented from EvtDecayBase.

◆ init() [3/4]

void EvtJ2BB1::init ( int  ,
double *   
)

◆ init() [4/4]

void EvtJ2BB1::init ( int  ,
double *   
)

Member Data Documentation

◆ alpha

double EvtJ2BB1::alpha

Definition at line 44 of file bak-BesEvtGen-00-04-08/src/EvtGen/EvtGenModels/EvtJ2BB1.hh.

Referenced by decay().

◆ u

double EvtJ2BB1::u

Definition at line 45 of file bak-BesEvtGen-00-04-08/src/EvtGen/EvtGenModels/EvtJ2BB1.hh.

Referenced by decay().

The documentation for this class was generated from the following files: