ROOT 6.07/09 Reference Guide |
This class implements the TVirtualMCDecayer interface.
The TPythia6 singleton object is used to decay particles. Note, that since this class modifies common blocks (global variables) it is defined as a singleton.
Definition at line 37 of file TPythia6Decayer.h.
Public Types | |
enum | EDecayType { kSemiElectronic, kDiElectron, kSemiMuonic, kDiMuon, kBJpsiDiMuon, kBJpsiDiElectron, kBPsiPrimeDiMuon, kBPsiPrimeDiElectron, kPiToMu, kKaToMu, kNoDecay, kHadronicD, kOmega, kPhiKK, kAll, kNoDecayHeavy, kHardMuons, kBJpsi, kWToMuon, kWToCharm, kWToCharmToMuon, kZDiMuon, kMaxDecay } |
Public Types inherited from TObject | |
enum | { kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff } |
enum | { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) } |
enum | EStatusBits { kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13) } |
Public Member Functions | |
TPythia6Decayer () | |
Constructor. More... | |
virtual | ~TPythia6Decayer () |
virtual void | Decay (Int_t idpart, TLorentzVector *p) |
Decay a particle of type IDPART (PDG code) and momentum P. More... | |
virtual void | ForceDecay () |
Force a particle decay mode. More... | |
void | ForceParticleDecay (Int_t particle, Int_t *products, Int_t *mult, Int_t npart) |
Force decay of particle into products with multiplicity mult. More... | |
void | ForceParticleDecay (Int_t particle, Int_t product, Int_t mult) |
Force decay of particle into products with multiplicity mult. More... | |
virtual Float_t | GetLifetime (Int_t kf) |
Get the life-time of a particle of type KF (a PDG code). More... | |
virtual Float_t | GetPartialBranchingRatio (Int_t ipart) |
Get the partial branching ratio for a particle of type IPART (a PDG code). More... | |
virtual Int_t | ImportParticles (TClonesArray *particles) |
Get the decay products into the passed PARTICLES TClonesArray of TParticles. More... | |
virtual void | Init () |
Initialize the decayer. More... | |
virtual void | ReadDecayTable () |
Read in particle data from an ASCII file. More... | |
virtual void | SetDecayTableFile (const char *name) |
virtual void | SetForceDecay (Int_t type) |
Force a particular decay type. More... | |
virtual void | SetForceDecay (EDecayType type) |
virtual void | WriteDecayTable () |
write particle data to an ASCII file. More... | |
Public Member Functions inherited from TVirtualMCDecayer | |
TVirtualMCDecayer () | |
virtual | ~TVirtualMCDecayer () |
Public Member Functions inherited from TObject | |
TObject () | |
TObject constructor. More... | |
TObject (const TObject &object) | |
TObject copy ctor. More... | |
virtual | ~TObject () |
TObject destructor. More... | |
void | AbstractMethod (const char *method) const |
Use this method to implement an "abstract" method that you don't want to leave purely abstract. More... | |
virtual void | AppendPad (Option_t *option="") |
Append graphics object to current pad. More... | |
virtual void | Browse (TBrowser *b) |
Browse object. May be overridden for another default action. More... | |
virtual const char * | ClassName () const |
Returns name of class to which the object belongs. More... | |
virtual void | Clear (Option_t *="") |
virtual TObject * | Clone (const char *newname="") const |
Make a clone of an object using the Streamer facility. More... | |
virtual Int_t | Compare (const TObject *obj) const |
Compare abstract method. More... | |
virtual void | Copy (TObject &object) const |
Copy this to obj. More... | |
virtual void | Delete (Option_t *option="") |
Delete this object. More... | |
virtual Int_t | DistancetoPrimitive (Int_t px, Int_t py) |
Computes distance from point (px,py) to the object. More... | |
virtual void | Draw (Option_t *option="") |
Default Draw method for all objects. More... | |
virtual void | DrawClass () const |
Draw class inheritance tree of the class to which this object belongs. More... | |
virtual TObject * | DrawClone (Option_t *option="") const |
Draw a clone of this object in the current pad. More... | |
virtual void | Dump () const |
Dump contents of object on stdout. More... | |
virtual void | Error (const char *method, const char *msgfmt,...) const |
Issue error message. More... | |
virtual void | Execute (const char *method, const char *params, Int_t *error=0) |
Execute method on this object with the given parameter string, e.g. More... | |
virtual void | Execute (TMethod *method, TObjArray *params, Int_t *error=0) |
Execute method on this object with parameters stored in the TObjArray. More... | |
virtual void | ExecuteEvent (Int_t event, Int_t px, Int_t py) |
Execute action corresponding to an event at (px,py). More... | |
virtual void | Fatal (const char *method, const char *msgfmt,...) const |
Issue fatal error message. More... | |
virtual TObject * | FindObject (const char *name) const |
Must be redefined in derived classes. More... | |
virtual TObject * | FindObject (const TObject *obj) const |
Must be redefined in derived classes. More... | |
virtual Option_t * | GetDrawOption () const |
Get option used by the graphics system to draw this object. More... | |
virtual const char * | GetIconName () const |
Returns mime type name of object. More... | |
virtual const char * | GetName () const |
Returns name of object. More... | |
virtual char * | GetObjectInfo (Int_t px, Int_t py) const |
Returns string containing info about the object at position (px,py). More... | |
virtual Option_t * | GetOption () const |
virtual const char * | GetTitle () const |
Returns title of object. More... | |
virtual UInt_t | GetUniqueID () const |
Return the unique object id. More... | |
virtual Bool_t | HandleTimer (TTimer *timer) |
Execute action in response of a timer timing out. More... | |
virtual ULong_t | Hash () const |
Return hash value for this object. More... | |
virtual void | Info (const char *method, const char *msgfmt,...) const |
Issue info message. More... | |
virtual Bool_t | InheritsFrom (const char *classname) const |
Returns kTRUE if object inherits from class "classname". More... | |
virtual Bool_t | InheritsFrom (const TClass *cl) const |
Returns kTRUE if object inherits from TClass cl. More... | |
virtual void | Inspect () const |
Dump contents of this object in a graphics canvas. More... | |
void | InvertBit (UInt_t f) |
virtual Bool_t | IsEqual (const TObject *obj) const |
Default equal comparison (objects are equal if they have the same address in memory). More... | |
virtual Bool_t | IsFolder () const |
Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More... | |
Bool_t | IsOnHeap () const |
virtual Bool_t | IsSortable () const |
Bool_t | IsZombie () const |
virtual void | ls (Option_t *option="") const |
The ls function lists the contents of a class on stdout. More... | |
void | MayNotUse (const char *method) const |
Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More... | |
virtual Bool_t | Notify () |
This method must be overridden to handle object notification. More... | |
void | Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const |
Use this method to declare a method obsolete. More... | |
void | operator delete (void *ptr) |
Operator delete. More... | |
void | operator delete[] (void *ptr) |
Operator delete []. More... | |
void * | operator new (size_t sz) |
void * | operator new (size_t sz, void *vp) |
void * | operator new[] (size_t sz) |
void * | operator new[] (size_t sz, void *vp) |
TObject & | operator= (const TObject &rhs) |
TObject assignment operator. More... | |
virtual void | Paint (Option_t *option="") |
This method must be overridden if a class wants to paint itself. More... | |
virtual void | Pop () |
Pop on object drawn in a pad to the top of the display list. More... | |
virtual void | Print (Option_t *option="") const |
This method must be overridden when a class wants to print itself. More... | |
virtual Int_t | Read (const char *name) |
Read contents of object with specified name from the current directory. More... | |
virtual void | RecursiveRemove (TObject *obj) |
Recursively remove this object from a list. More... | |
void | ResetBit (UInt_t f) |
virtual void | SaveAs (const char *filename="", Option_t *option="") const |
Save this object in the file specified by filename. More... | |
virtual void | SavePrimitive (std::ostream &out, Option_t *option="") |
Save a primitive as a C++ statement(s) on output stream "out". More... | |
void | SetBit (UInt_t f, Bool_t set) |
Set or unset the user status bits as specified in f. More... | |
void | SetBit (UInt_t f) |
virtual void | SetDrawOption (Option_t *option="") |
Set drawing option for object. More... | |
virtual void | SetUniqueID (UInt_t uid) |
Set the unique object id. More... | |
virtual void | SysError (const char *method, const char *msgfmt,...) const |
Issue system error message. More... | |
Bool_t | TestBit (UInt_t f) const |
Int_t | TestBits (UInt_t f) const |
virtual void | UseCurrentStyle () |
Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More... | |
virtual void | Warning (const char *method, const char *msgfmt,...) const |
Issue warning message. More... | |
virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) |
Write this object to the current directory. More... | |
virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const |
Write this object to the current directory. More... | |
Static Public Member Functions | |
static TPythia6Decayer * | Instance () |
Get the singleton object. More... | |
Static Public Member Functions inherited from TObject | |
static Long_t | GetDtorOnly () |
Return destructor only flag. More... | |
static Bool_t | GetObjectStat () |
Get status of object stat flag. More... | |
static void | SetDtorOnly (void *obj) |
Set destructor only flag. More... | |
static void | SetObjectStat (Bool_t stat) |
Turn on/off tracking of objects in the TObjectTable. More... | |
Protected Member Functions | |
Int_t | CountProducts (Int_t channel, Int_t particle) |
Count number of decay products. More... | |
void | ForceHadronicD () |
Force golden D decay modes. More... | |
void | ForceOmega () |
Force Omega -> Lambda K- Decay. More... | |
Protected Member Functions inherited from TObject | |
virtual void | DoError (int level, const char *location, const char *fmt, va_list va) const |
Interface to ErrorHandler (protected). More... | |
void | MakeZombie () |
Protected Attributes | |
TArrayF | fBraPart |
EDecayType | fDecay |
TString | fDecayTableFile |
Static Protected Attributes | |
static TPythia6Decayer * | fgInstance = 0 |
Branching ratios. More... | |
#include <TPythia6Decayer.h>
Definition at line 41 of file TPythia6Decayer.h.
TPythia6Decayer::TPythia6Decayer | ( | ) |
Constructor.
Definition at line 45 of file TPythia6Decayer.cxx.
|
inlinevirtual |
Definition at line 81 of file TPythia6Decayer.h.
Count number of decay products.
Definition at line 489 of file TPythia6Decayer.cxx.
|
virtual |
Decay a particle of type IDPART (PDG code) and momentum P.
Implements TVirtualMCDecayer.
Definition at line 66 of file TPythia6Decayer.cxx.
|
virtual |
Force a particle decay mode.
Implements TVirtualMCDecayer.
Definition at line 97 of file TPythia6Decayer.cxx.
|
protected |
Force golden D decay modes.
Definition at line 500 of file TPythia6Decayer.cxx.
|
protected |
Force Omega -> Lambda K- Decay.
Definition at line 613 of file TPythia6Decayer.cxx.
void TPythia6Decayer::ForceParticleDecay | ( | Int_t | particle, |
Int_t * | products, | ||
Int_t * | mult, | ||
Int_t | npart | ||
) |
Force decay of particle into products with multiplicity mult.
Definition at line 585 of file TPythia6Decayer.cxx.
Force decay of particle into products with multiplicity mult.
Definition at line 558 of file TPythia6Decayer.cxx.
Get the life-time of a particle of type KF (a PDG code).
Implements TVirtualMCDecayer.
Definition at line 286 of file TPythia6Decayer.cxx.
Get the partial branching ratio for a particle of type IPART (a PDG code).
Implements TVirtualMCDecayer.
Definition at line 276 of file TPythia6Decayer.cxx.
|
virtual |
Get the decay products into the passed PARTICLES TClonesArray of TParticles.
Implements TVirtualMCDecayer.
Definition at line 77 of file TPythia6Decayer.cxx.
|
virtual |
Initialize the decayer.
Implements TVirtualMCDecayer.
Definition at line 55 of file TPythia6Decayer.cxx.
|
static |
Get the singleton object.
Definition at line 36 of file TPythia6Decayer.cxx.
|
virtual |
Read in particle data from an ASCII file.
The file name must previously have been set using the member function SetDecayTableFile.
Implements TVirtualMCDecayer.
Definition at line 297 of file TPythia6Decayer.cxx.
|
inlinevirtual |
Definition at line 103 of file TPythia6Decayer.h.
Force a particular decay type.
Implements TVirtualMCDecayer.
Definition at line 85 of file TPythia6Decayer.cxx.
|
inlinevirtual |
Definition at line 96 of file TPythia6Decayer.h.
|
virtual |
write particle data to an ASCII file.
The file name must previously have been set using the member function SetDecayTableFile.
Users can use this function to make an initial decay list file, which then can be edited by hand, and re-loaded into the decayer using ReadDecayTable.
The file syntax is
particle_list : partcle_data | particle_list particle_data ; particle_data : particle_info | particle_info '\n' decay_list ; particle_info : See below ; decay_list : decay_entry | decay_list decay_entry ; decay_entry : See below
The particle_info consists of 13 fields:
PDG code int Name string Anti-particle name string if there's no anti-particle, then this field must be the empty string Electic charge int in units of |e|/3 Color charge int in units of quark color charges Have anti-particle int 1 of there's an anti-particle to this particle, or 0 otherwise Mass float in units of GeV Resonance width float Max broadning float Lifetime float MWID int ??? (some sort of flag) Decay int 1 if it decays. 0 otherwise
The format to write these entries in are
" %9 %-16s %-16s%3d%3d%3d%12.5f%12.5f%12.5f%13.gf%3d%d\n"
The decay_entry consists of 8 fields:
On/Off int 1 for on, -1 for off Matrix element type int Branching ratio float Product 1 int PDG code of decay product 1 Product 2 int PDG code of decay product 2 Product 3 int PDG code of decay product 3 Product 4 int PDG code of decay product 4 Product 5 int PDG code of decay product 5
The format for these lines are
" %5d%5d%12.5f%10d%10d%10d%10d%10d\n"
Definition at line 473 of file TPythia6Decayer.cxx.
|
protected |
Definition at line 70 of file TPythia6Decayer.h.
|
protected |
Definition at line 69 of file TPythia6Decayer.h.
|
protected |
Definition at line 68 of file TPythia6Decayer.h.
|
staticprotected |
Branching ratios.
Definition at line 72 of file TPythia6Decayer.h.