source: HiSusy/trunk/Pythia8/pythia8170/examples/main31.cmnd @ 1

Last change on this file since 1 was 1, checked in by zerwas, 11 years ago

first import of structure, PYTHIA8 and DELPHES

File size: 2.7 KB
Line 
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.
8Main:numberOfEvents = 0
9
10! Number of events to list and number of errors to allow.
11Next:numberShowLHA = 1
12Next:numberShowInfo = 1
13Next:numberShowProcess = 1
14Next:numberShowEvent = 1   
15Main:timesAllowErrors = 10
16
17! List changed settings or particle data.       
18Init:showChangedSettings = on
19Init:showChangedParticleData = off
20
21! Input file.
22Beams:frameType = 4
23! t tbar pair production.
24#Beams:LHEF = powheg-hvq.lhe
25! QCD 2- and 3-jet events.
26Beams:LHEF = powheg-dijets.lhe
27
28! Number of outgoing particles of POWHEG Born level process
29! (i.e. not counting additional POWHEG radiation)
30POWHEG: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
37POWHEG:veto = 1
38
39! After 'vetoCount' accepted emissions in a row, no more emissions
40! are checked. 'vetoCount = 0' means all emissions are checked.
41POWHEG: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
50POWHEG: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
58POWHEG: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
65POWHEG: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
71POWHEG: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
77POWHEG:MPIveto = 0
78
79! Further options (optional, for tryout)
80PartonLevel:MPI = off
81HadronLevel:All = off
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