[u/mrichter/AliRoot.git] / PYTHIA8 / pythia8175 / examples / main31.cmnd

! main31.cmnd.
! This file contains commands to be read in for a Pythia8 run. 
! Lines not beginning with a letter or digit are comments.
! Names are case-insensitive  -  but spellings-sensitive!
! The settings here are illustrative, not always physics-motivated.

! Number of events - use 0 for all LHEF events in the input file.
Main:numberOfEvents = 0

! Number of events to list and number of errors to allow.
Next:numberShowLHA = 1
Next:numberShowInfo = 1 
Next:numberShowProcess = 1
Next:numberShowEvent = 1   
Main:timesAllowErrors = 10

! List changed settings or particle data.	
Init:showChangedSettings = on
Init:showChangedParticleData = off 

! Input file.
Beams:frameType = 4
! t tbar pair production.
#Beams:LHEF = powheg-hvq.lhe
! QCD 2- and 3-jet events.
Beams:LHEF = powheg-dijets.lhe

! Number of outgoing particles of POWHEG Born level process
! (i.e. not counting additional POWHEG radiation)
POWHEG:nFinal = 2

! How vetoing is performed:
!  0 - No vetoing is performed (userhooks are not loaded)
!  1 - Showers are started at the kinematical limit.
!      Emissions are vetoed if pTemt > pThard.
!      See also POWHEG:vetoCount below
POWHEG:veto = 1

! After 'vetoCount' accepted emissions in a row, no more emissions
! are checked. 'vetoCount = 0' means all emissions are checked.
POWHEG:vetoCount = 3

! Selection of pThard (note, for events where there is no
! radiation, pThard is always set to be Q_fac):
!  0 - pThard = Q_fac
!  1 - the pT of the POWHEG emission is tested against all other
!      incoming and outgoing partons, with the minimal value chosen
!  2 - the pT of all final-state partons is tested against all other
!      incoming and outgoing partons, with the minimal value chosen
POWHEG:pThard = 2

! Selection of pTemt:
!  0 - pTemt is pT of the emitted parton w.r.t. radiating parton
!  1 - pT of the emission is checked against all incoming and outgoing
!      partons. pTemt is set to the minimum of these values
!  2 - the pT of all final-state partons is tested against all other
!      incoming and outgoing partons, with the minimal value chosen
POWHEG:pTemt = 2

! Selection of emitted parton for FSR
!  0 - Pythia definition of emitted
!  1 - Pythia definition of radiator
!  2 - Random selection of emitted or radiator
!  3 - Both are emitted and radiator are tried
POWHEG:emitted = 0

! pT definitions
!  0 - POWHEG ISR pT definition is used for both ISR and FSR
!  1 - POWHEG ISR pT and FSR d_ij definitions
!  2 - Pythia definitions
POWHEG:pTdef = 1

! MPI vetoing
!  0 - No MPI vetoing is done
!  1 - When there is no radiation, MPIs with a scale above pT_1 are vetoed,
!      else MPIs with a scale above (pT_1 + pT_2 + pT_3) / 2 are vetoed
POWHEG:MPIveto = 0

! Further options (optional, for tryout)
PartonLevel:MPI = off
HadronLevel:All = off
Commit	Line	Data
c6b60c38	1	! main31.cmnd.
	2	! This file contains commands to be read in for a Pythia8 run.
	3	! Lines not beginning with a letter or digit are comments.
	4	! Names are case-insensitive - but spellings-sensitive!
	5	! The settings here are illustrative, not always physics-motivated.
	6
	7	! Number of events - use 0 for all LHEF events in the input file.
	8	Main:numberOfEvents = 0
	9
	10	! Number of events to list and number of errors to allow.
	11	Next:numberShowLHA = 1
	12	Next:numberShowInfo = 1
	13	Next:numberShowProcess = 1
	14	Next:numberShowEvent = 1
	15	Main:timesAllowErrors = 10
	16
	17	! List changed settings or particle data.
	18	Init:showChangedSettings = on
	19	Init:showChangedParticleData = off
	20
	21	! Input file.
	22	Beams:frameType = 4
	23	! t tbar pair production.
	24	#Beams:LHEF = powheg-hvq.lhe
	25	! QCD 2- and 3-jet events.
	26	Beams:LHEF = powheg-dijets.lhe
	27
	28	! Number of outgoing particles of POWHEG Born level process
	29	! (i.e. not counting additional POWHEG radiation)
	30	POWHEG:nFinal = 2
	31
	32	! How vetoing is performed:
	33	! 0 - No vetoing is performed (userhooks are not loaded)
	34	! 1 - Showers are started at the kinematical limit.
	35	! Emissions are vetoed if pTemt > pThard.
	36	! See also POWHEG:vetoCount below
	37	POWHEG:veto = 1
	38
	39	! After 'vetoCount' accepted emissions in a row, no more emissions
	40	! are checked. 'vetoCount = 0' means all emissions are checked.
	41	POWHEG:vetoCount = 3
	42
	43	! Selection of pThard (note, for events where there is no
	44	! radiation, pThard is always set to be Q_fac):
	45	! 0 - pThard = Q_fac
	46	! 1 - the pT of the POWHEG emission is tested against all other
	47	! incoming and outgoing partons, with the minimal value chosen
	48	! 2 - the pT of all final-state partons is tested against all other
	49	! incoming and outgoing partons, with the minimal value chosen
	50	POWHEG:pThard = 2
	51
	52	! Selection of pTemt:
	53	! 0 - pTemt is pT of the emitted parton w.r.t. radiating parton
	54	! 1 - pT of the emission is checked against all incoming and outgoing
	55	! partons. pTemt is set to the minimum of these values
	56	! 2 - the pT of all final-state partons is tested against all other
	57	! incoming and outgoing partons, with the minimal value chosen
	58	POWHEG:pTemt = 2
	59
	60	! Selection of emitted parton for FSR
	61	! 0 - Pythia definition of emitted
	62	! 1 - Pythia definition of radiator
	63	! 2 - Random selection of emitted or radiator
	64	! 3 - Both are emitted and radiator are tried
65	POWHEG:emitted = 0
66
67	! pT definitions
68	! 0 - POWHEG ISR pT definition is used for both ISR and FSR
69	! 1 - POWHEG ISR pT and FSR d_ij definitions
70	! 2 - Pythia definitions
71	POWHEG:pTdef = 1
72
73	! MPI vetoing
74	! 0 - No MPI vetoing is done
75	! 1 - When there is no radiation, MPIs with a scale above pT_1 are vetoed,
76	! else MPIs with a scale above (pT_1 + pT_2 + pT_3) / 2 are vetoed
77	POWHEG:MPIveto = 0
78
79	! Further options (optional, for tryout)
80	PartonLevel:MPI = off
81	HadronLevel:All = off