DireSplittingLibrary Class Reference

Public Member Functions
	DireSplittingLibrary ()
	Constructor and destructor.
void	init (Info *infoPtr, BeamParticle *beamA, BeamParticle *beamB, DireInfo *direInfo, DireHooks *hooks=NULL)
	Initialisation. More...
void	initFSR ()
void	initISR ()
void	clear ()
	class SplittingLibrary More...
void	setTimesPtr (shared_ptr< DireTimes > fsrIn)
void	setTimesDecPtr (shared_ptr< DireTimes > fsrIn)
void	setSpacePtr (shared_ptr< DireSpace > isrIn)
unordered_map< string, DireSplitting * >	getSplittings ()
DireSplitting *	operator[] (string id)
	Overload index operator to access element of splitting vector.
const DireSplitting *	operator[] (string id) const
vector< int >	getSplittingRadBefID (const Event &event, int rad, int emt)
	Generate name for a splitting. More...
vector< int >	getSplittingRadBefID_new (const Event &event, int rad, int emt)
vector< string >	getSplittingName (const Event &event, int rad, int emt)
	Generate name for a splitting.
vector< string >	getSplittingName_new (const Event &event, int rad, int emt)
	Generate name for a splitting. More...
int	nEmissions (string name)
	Check number of particles produced in splitting. More...
void	setKernelHooks (DireHooks *hooks)

Public Attributes
ulong	fsrQCD_1_to_1_and_21
	Some string name hashes, to avoid string conparisons.
ulong	fsrQCD_1_to_21_and_1
ulong	fsrQCD_21_to_21_and_21a
ulong	fsrQCD_21_to_21_and_21b
ulong	fsrQCD_21_to_1_and_1a
ulong	fsrQCD_21_to_1_and_1b
ulong	fsrQCD_1_to_2_and_1_and_2
ulong	fsrQCD_1_to_1_and_1_and_1
ulong	fsrQCD_1_to_1_and_21_notPartial
ulong	fsrQCD_21_to_21_and_21_notPartial
ulong	fsrQCD_21_to_1_and_1_notPartial
ulong	fsrQCD_1_to_1_and_21_and_21
ulong	fsrQCD_1_to_1_and_1_and_1a
ulong	fsrQCD_1_to_1_and_1_and_1b
ulong	fsrQCD_1_to_1_and_2_and_2a
ulong	fsrQCD_1_to_1_and_2_and_2b
ulong	fsrQCD_1_to_1_and_3_and_3a
ulong	fsrQCD_1_to_1_and_3_and_3b
ulong	fsrQCD_1_to_1_and_4_and_4a
ulong	fsrQCD_1_to_1_and_4_and_4b
ulong	fsrQCD_1_to_1_and_5_and_5a
ulong	fsrQCD_1_to_1_and_5_and_5b
ulong	fsrQCD_21_to_21_and_21_and_21
ulong	fsrQCD_21_to_21_and_1_and_1a
ulong	fsrQCD_21_to_21_and_1_and_1b
ulong	fsrQCD_21_to_21_and_2_and_2a
ulong	fsrQCD_21_to_21_and_2_and_2b
ulong	fsrQCD_21_to_21_and_3_and_3a
ulong	fsrQCD_21_to_21_and_3_and_3b
ulong	fsrQCD_21_to_21_and_4_and_4a
ulong	fsrQCD_21_to_21_and_4_and_4b
ulong	fsrQCD_21_to_21_and_5_and_5a
ulong	fsrQCD_21_to_21_and_5_and_5b
ulong	isrQCD_1_to_1_and_21
ulong	isrQCD_21_to_1_and_1
ulong	isrQCD_21_to_21_and_21a
ulong	isrQCD_21_to_21_and_21b
ulong	isrQCD_1_to_21_and_1
ulong	isrQCD_1_to_2_and_1_and_2
ulong	isrQCD_1_to_1_and_1_and_1
ulong	fsrQED_1_to_1_and_22
	Some string name hashes, to avoid string conparisons.
ulong	fsrQED_1_to_22_and_1
ulong	fsrQED_11_to_11_and_22
ulong	fsrQED_11_to_22_and_11
ulong	fsrQED_22_to_1_and_1a
ulong	fsrQED_22_to_1_and_1b
ulong	fsrQED_22_to_2_and_2a
ulong	fsrQED_22_to_2_and_2b
ulong	fsrQED_22_to_3_and_3a
ulong	fsrQED_22_to_3_and_3b
ulong	fsrQED_22_to_4_and_4a
ulong	fsrQED_22_to_4_and_4b
ulong	fsrQED_22_to_5_and_5a
ulong	fsrQED_22_to_5_and_5b
ulong	fsrQED_22_to_11_and_11a
ulong	fsrQED_22_to_11_and_11b
ulong	fsrQED_22_to_13_and_13a
ulong	fsrQED_22_to_13_and_13b
ulong	fsrQED_22_to_15_and_15a
ulong	fsrQED_22_to_15_and_15b
ulong	fsrQED_1_to_1_and_22_notPartial
ulong	fsrQED_11_to_11_and_22_notPartial
ulong	isrQED_1_to_1_and_22
ulong	isrQED_11_to_11_and_22
ulong	isrQED_1_to_22_and_1
ulong	isrQED_11_to_22_and_11
ulong	isrQED_22_to_1_and_1
ulong	isrQED_22_to_11_and_11
ulong	fsrEWK_1_to_1_and_23
ulong	fsrEWK_1_to_23_and_1
ulong	fsrEWK_23_to_1_and_1a
ulong	fsrEWK_23_to_1_and_1b
ulong	fsrEWK_24_to_1_and_1a
ulong	fsrEWK_24_to_1_and_1b
ulong	fsrEWK_25_to_24_and_24
ulong	fsrEWK_25_to_22_and_22
ulong	fsrEWK_25_to_21_and_21
ulong	fsrEWK_24_to_24_and_22
ulong	isrEWK_1_to_1_and_23
ulong	fsrU1N_1_to_1_and_22
ulong	fsrU1N_1_to_22_and_1
ulong	fsrU1N_11_to_11_and_22
ulong	fsrU1N_11_to_22_and_11
ulong	fsrU1N_22_to_1_and_1a
ulong	fsrU1N_22_to_1_and_1b
ulong	fsrU1N_22_to_2_and_2a
ulong	fsrU1N_22_to_2_and_2b
ulong	fsrU1N_22_to_3_and_3a
ulong	fsrU1N_22_to_3_and_3b
ulong	fsrU1N_22_to_4_and_4a
ulong	fsrU1N_22_to_4_and_4b
ulong	fsrU1N_22_to_5_and_5a
ulong	fsrU1N_22_to_5_and_5b
ulong	fsrU1N_22_to_11_and_11a
ulong	fsrU1N_22_to_11_and_11b
ulong	fsrU1N_22_to_13_and_13a
ulong	fsrU1N_22_to_13_and_13b
ulong	fsrU1N_22_to_15_and_15a
ulong	fsrU1N_22_to_15_and_15b
ulong	fsrU1N_22_to_211_and_211a
ulong	fsrU1N_22_to_211_and_211b
ulong	isrU1N_1_to_1_and_22
ulong	isrU1N_1_to_22_and_1
ulong	isrU1N_22_to_1_and_1
ulong	isrU1N_11_to_11_and_22
ulong	isrU1N_11_to_22_and_11
ulong	isrU1N_22_to_11_and_11

Member Function Documentation

void clear

(

)

class SplittingLibrary

Clean up

vector< string > getSplittingName_new	(	const Event &	event,
		int	rad,
		int	emt
	)

Generate name for a splitting.

Find radiator before emission.

Now check that after emission, we would find same flavors.

Found valid splitting name.

vector< int > getSplittingRadBefID	(	const Event &	event,
		int	rad,
		int	emt
	)

Generate name for a splitting.

Generate identifier of radiator before the splitting.

void init	(	Info *	infoPtr,
		BeamParticle *	beamA,
		BeamParticle *	beamB,
		DireInfo *	direInfo,
		DireHooks *	hooks = NULL
	)

Initialisation.

Store infrastructure pointers.

Initialise splitting names.

Done.

void initFSR

(

)

Add corrections to the LO splitting kernel. order = 0 -> A1, B1 order = 1 -> A1, A2, B1 order = 2 -> A1, A2, A3, B1 order = 3 -> A1, A2, A3, B1, B2

QCD splittings.

Q -> Q G, soft part + collinear

Q -> G Q, soft part + collinear At leading order, this can be trivially combined with Q->QG because of symmetry under z –> 1 -z . Since this is no longer possible at NLO, we keep the kernels separately.

G -> G G, soft part + collinear

G -> G G, soft part + collinear

G -> Q Q (regular DGLAP kernel)

G -> Q Q (regular DGLAP kernel)

Q -> Q' Q Q'bar (pure NLO kernel)

Q -> Qbar Q Q (pure NLO kernel)

Full DGLAP kernels for shower w/o color-connected recoiler.

Q -> Q G G

Q -> Q d dbar

Q -> Q dbar d

Q -> Q u ubar

Q -> Q ubar u

Q -> Q s sbar

Q -> Q sbar s

Q -> Q c cbar

Q -> Q cbar c

Q -> Q b bbar

Q -> Q bbar b

G -> G G G

G -> G d dbar

G -> G dbar d

G -> G u ubar

G -> G ubar u

G -> G s sbar

G -> G sbar s

G -> G c cbar

G -> G cbar c

G -> G b bbar

G -> G bbar b

QED splittings

Complete DGLAG kernel for photon emission off charge, as e.g. needed after charged hadron decay.

Complete DGLAG kernel for photon emission off charge, as e.g. needed after charged hadron decay.

H -> A A

New U(1) splittings

Read more kernels.

Done.

void initISR

(

)

Add corrections to the LO splitting kernel. order = 0 -> A1, B1 order = 1 -> A1, A2, B1 order = 2 -> A1, A2, A3, B1 order = 3 -> A1, A2, A3, B1, B2

QCD splittings.

Q -> Q G, soft and collinear part.

G -> Q Q~ (regular DGLAP kernel)

G -> G G, soft part.

Q -> G Q (regular DGLAP kernel)

Q -> Q' Q Q'bar (pure NLO kernel)

Q -> Qbar Q Q (pure NLO kernel)

QED splittings

Q -> Q A, soft and collinear part.

L -> L A, soft and collinear part.

New U(1) splittings

Read more kernels.

Done.

int nEmissions

(

string

name

)

Check number of particles produced in splitting.

Return the total number of emissions for a particular splitting.

Flavour-changing 1->3 splitting for FSR implemented.

Flavour-preserving 1->3 splitting for FSR implemented.

Flavour-changing 1->3 splitting for FSR implemented.

Flavour-preserving 1->3 splitting for FSR implemented.

Default is one emission.

---

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

• include/Pythia8/DireSplittingLibrary.h
• src/DireSplittingLibrary.cc