ROOT 6.12/07 Reference Guide |
TPythia8 is an interface class to C++ version of Pythia 8.1 event generators, written by T.Sjostrand.
The user is assumed to be familiar with the Pythia package. This class includes only a basic interface to Pythia8. Because Pythia8 is also written in C++, its functions/classes can be called directly from a compiled C++ script.
To call Pythia functions not available in this interface a dictionary must be generated.
See $ROOTSYS/tutorials/pythia/pythia8.C for an example of use from CINT.
Author: Andreas Morsch 27/10/2007
*------------------------------------------------------------------------------------* | | | *------------------------------------------------------------------------------* | | | | | | | | | | | PPP Y Y TTTTT H H III A Welcome to the Lund Monte Carlo! | | | | P P Y Y T H H I A A This is PYTHIA version 8.100 | | | | PPP Y T HHHHH I AAAAA Last date of change: 20 Oct 2007 | | | | P Y T H H I A A | | | | P Y T H H III A A Now is 27 Oct 2007 at 18:26:53 | | | | | | | | Main author: Torbjorn Sjostrand; CERN/PH, CH-1211 Geneva, Switzerland, | | | | and Department of Theoretical Physics, Lund University, Lund, Sweden; | | | | phone: + 41 - 22 - 767 82 27; e-mail: torbjorn@thep.lu.se | | | | Author: Stephen Mrenna; Computing Division, Simulations Group, | | | | Fermi National Accelerator Laboratory, MS 234, Batavia, IL 60510, USA; | | | | phone: + 1 - 630 - 840 - 2556; e-mail: mrenna@fnal.gov | | | | Author: Peter Skands; CERN/PH, CH-1211 Geneva, Switzerland, | | | | and Theoretical Physics Department, | | | | Fermi National Accelerator Laboratory, MS 106, Batavia, IL 60510, USA; | | | | phone: + 41 - 22 - 767 24 59; e-mail: skands@fnal.gov | | | | | | | | The main program reference is the 'Brief Introduction to PYTHIA 8.1', | | | | T. Sjostrand, S. Mrenna and P. Skands, arXiv:0710.3820 | | | | | | | | The main physics reference is the 'PYTHIA 6.4 Physics and Manual', | | | | T. Sjostrand, S. Mrenna and P. Skands, JHEP05 (2006) 026 [hep-ph/0603175]. | | | | | | | | An archive of program versions and documentation is found on the web: | | | | http://www.thep.lu.se/~torbjorn/Pythia.html | | | | | | | | This program is released under the GNU General Public Licence version 2. | | | | Please respect the MCnet Guidelines for Event Generator Authors and Users. | | | | | | | | Disclaimer: this program comes without any guarantees. | | | | Beware of errors and use common sense when interpreting results. | | | | | | | | Copyright (C) 2007 Torbjorn Sjostrand | | | | | | | | | | | *------------------------------------------------------------------------------* | | | *------------------------------------------------------------------------------------*
Definition at line 76 of file TPythia8.h.
Public Member Functions | |
TPythia8 () | |
Number of particles. More... | |
TPythia8 (const char *xmlDir) | |
Constructor with an xmlDir (eg "../xmldoc". More... | |
virtual | ~TPythia8 () |
Destructor. More... | |
void | EventListing () const |
Event listing. More... | |
virtual void | GenerateEvent () |
Generate the next event. More... | |
Int_t | GetN () const |
Initialization. More... | |
virtual Int_t | ImportParticles (TClonesArray *particles, Option_t *option="") |
Import particles from Pythia stack. More... | |
virtual TObjArray * | ImportParticles (Option_t *option="") |
Import particles from Pythia stack. More... | |
Bool_t | Initialize (Int_t idAin, Int_t idBin, Double_t ecms) |
Initialization. More... | |
Bool_t | Initialize (Int_t idAin, Int_t idBin, Double_t eAin, Double_t eBin) |
Initialization. More... | |
void | ListAll () const |
Event listing. More... | |
void | ListChanged () const |
Event listing. More... | |
void | Plist (Int_t id) const |
Event listing. More... | |
void | PlistAll () const |
Event listing. More... | |
void | PlistChanged () const |
Event listing. More... | |
void | PrintStatistics () const |
Print end of run statistics. More... | |
Pythia8::Pythia * | Pythia8 () |
void | ReadConfigFile (const char *string) const |
Configuration. More... | |
void | ReadString (const char *string) const |
Configuration. More... | |
Public Member Functions inherited from TGenerator | |
TGenerator () | |
TGenerator (const char *name, const char *title="Generator class") | |
Event generator default constructor. More... | |
virtual | ~TGenerator () |
Event generator default destructor. More... | |
virtual void | Browse (TBrowser *b) |
browse generator More... | |
virtual Int_t | DistancetoPrimitive (Int_t px, Int_t py) |
Compute distance from point px,py to objects in event. More... | |
virtual void | Draw (Option_t *option="") |
Insert one event in the pad list. More... | |
virtual void | ExecuteEvent (Int_t event, Int_t px, Int_t py) |
Execute action corresponding to one event. More... | |
virtual TObjArray * | GetListOfParticles () const |
Int_t | GetNumberOfParticles () const |
Return the number of particles in the stack. More... | |
virtual Double_t | GetParameter (const char *) const |
virtual TParticle * | GetParticle (Int_t i) const |
Returns pointer to primary number i;. More... | |
virtual TObjArray * | GetPrimaries (Option_t *option="") |
Float_t | GetPtCut () const |
virtual void | Paint (Option_t *option="") |
Paint one event. More... | |
virtual void | SetParameter (const char *, Double_t) |
virtual void | SetPtCut (Float_t ptcut=0) |
Set Pt threshold below which primaries are not drawn. More... | |
virtual void | SetViewRadius (Float_t rbox=1000) |
Set lower and upper values of the view range. More... | |
virtual void | SetViewRange (Float_t xmin=-10000, Float_t ymin=-10000, Float_t zmin=-10000, Float_t xmax=10000, Float_t ymax=10000, Float_t zmax=10000) |
Set lower and upper values of the view range. More... | |
virtual void | ShowNeutrons (Bool_t show=1) |
Set flag to display or not neutrons. More... | |
Public Member Functions inherited from TNamed | |
TNamed () | |
TNamed (const char *name, const char *title) | |
TNamed (const TString &name, const TString &title) | |
TNamed (const TNamed &named) | |
TNamed copy ctor. More... | |
virtual | ~TNamed () |
TNamed destructor. More... | |
virtual void | Clear (Option_t *option="") |
Set name and title to empty strings (""). More... | |
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 two TNamed objects. More... | |
virtual void | Copy (TObject &named) const |
Copy this to obj. More... | |
virtual void | FillBuffer (char *&buffer) |
Encode TNamed into output buffer. More... | |
virtual const char * | GetName () const |
Returns name of object. More... | |
virtual const char * | GetTitle () const |
Returns title of object. More... | |
virtual ULong_t | Hash () const |
Return hash value for this object. More... | |
virtual Bool_t | IsSortable () const |
virtual void | ls (Option_t *option="") const |
List TNamed name and title. More... | |
TNamed & | operator= (const TNamed &rhs) |
TNamed assignment operator. More... | |
virtual void | Print (Option_t *option="") const |
Print TNamed name and title. More... | |
virtual void | SetName (const char *name) |
Set the name of the TNamed. More... | |
virtual void | SetNameTitle (const char *name, const char *title) |
Set all the TNamed parameters (name and title). More... | |
virtual void | SetTitle (const char *title="") |
Set the title of the TNamed. More... | |
virtual Int_t | Sizeof () const |
Return size of the TNamed part of the TObject. More... | |
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... | |
ULong_t | CheckedHash () |
Checked and record whether for this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object. More... | |
virtual const char * | ClassName () const |
Returns name of class to which the object belongs. More... | |
virtual void | Delete (Option_t *option="") |
Delete this object. 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 selected pad for instance with: gROOT->SetSelectedPad(gPad) . 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 | 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 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 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... | |
Bool_t | HasInconsistentHash () const |
Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e. 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... | |
R__ALWAYS_INLINE Bool_t | IsOnHeap () const |
R__ALWAYS_INLINE Bool_t | IsZombie () const |
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 | Pop () |
Pop on object drawn in a pad to the top of the display list. 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... | |
R__ALWAYS_INLINE 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 TPythia8 * | Instance () |
Return an instance of TPythia8. 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 Attributes | |
Int_t | fNumberOfParticles |
The pythia8 instance. More... | |
Pythia8::Pythia * | fPythia |
singleton instance More... | |
Protected Attributes inherited from TGenerator | |
TObjArray * | fParticles |
display neutrons if true More... | |
Float_t | fPtCut |
Bool_t | fShowNeutrons |
Pt cut. Do not show primaries below. More... | |
Protected Attributes inherited from TNamed | |
TString | fName |
TString | fTitle |
Static Protected Attributes | |
static TPythia8 * | fgInstance = 0 |
Private Member Functions | |
void | AddParticlesToPdgDataBase () |
Add some pythia specific particle code to the data base. More... | |
Additional Inherited Members | |
Public Types inherited from TObject | |
enum | { kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kInconsistent = 0x08000000, kBitMask = 0x00ffffff } |
enum | { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) } |
enum | EDeprecatedStatusBits { kObjInCanvas = BIT(3) } |
enum | EStatusBits { kCanDelete = BIT(0), kMustCleanup = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13) } |
Protected Member Functions inherited from TGenerator | |
TGenerator (const TGenerator &tg) | |
TGenerator & | operator= (const TGenerator &tg) |
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 () |
#include <TPythia8.h>
TPythia8::TPythia8 | ( | ) |
TPythia8::TPythia8 | ( | const char * | xmlDir | ) |
Constructor with an xmlDir (eg "../xmldoc".
Definition at line 108 of file TPythia8.cxx.
|
virtual |
Destructor.
Definition at line 125 of file TPythia8.cxx.
|
private |
Add some pythia specific particle code to the data base.
Definition at line 371 of file TPythia8.cxx.
void TPythia8::EventListing | ( | ) | const |
Event listing.
Definition at line 363 of file TPythia8.cxx.
|
virtual |
Generate the next event.
Reimplemented from TGenerator.
Definition at line 184 of file TPythia8.cxx.
Int_t TPythia8::GetN | ( | ) | const |
Initialization.
Definition at line 291 of file TPythia8.cxx.
|
virtual |
Import particles from Pythia stack.
Reimplemented from TGenerator.
Definition at line 193 of file TPythia8.cxx.
Import particles from Pythia stack.
Reimplemented from TGenerator.
Definition at line 256 of file TPythia8.cxx.
Initialization.
Definition at line 146 of file TPythia8.cxx.
Initialization.
Definition at line 164 of file TPythia8.cxx.
|
static |
Return an instance of TPythia8.
Definition at line 138 of file TPythia8.cxx.
void TPythia8::ListAll | ( | ) | const |
Event listing.
Definition at line 315 of file TPythia8.cxx.
void TPythia8::ListChanged | ( | ) | const |
Event listing.
Definition at line 323 of file TPythia8.cxx.
Event listing.
Definition at line 331 of file TPythia8.cxx.
void TPythia8::PlistAll | ( | ) | const |
Event listing.
Definition at line 339 of file TPythia8.cxx.
void TPythia8::PlistChanged | ( | ) | const |
Event listing.
Definition at line 347 of file TPythia8.cxx.
void TPythia8::PrintStatistics | ( | ) | const |
Print end of run statistics.
Definition at line 355 of file TPythia8.cxx.
|
inline |
Definition at line 89 of file TPythia8.h.
void TPythia8::ReadConfigFile | ( | const char * | string | ) | const |
Configuration.
Definition at line 307 of file TPythia8.cxx.
void TPythia8::ReadString | ( | const char * | string | ) | const |
Configuration.
Definition at line 299 of file TPythia8.cxx.
|
staticprotected |
Definition at line 81 of file TPythia8.h.
|
protected |
The pythia8 instance.
Definition at line 83 of file TPythia8.h.
|
protected |
singleton instance
Definition at line 82 of file TPythia8.h.