source: HiSusy/trunk/Pythia8/pythia8170/examples/main04.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: 2.8 KB
Line 
1! File: main04.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 changes here are illustrative, not always physics-motivated.
6
7! 1) Settings used in the main program.
8Main:numberOfEvents = 1000         ! number of events to generate
9Main:timesAllowErrors = 10         ! how many aborts before run stops
10
11! 2) Settings related to output in init(), next() and stat().
12Init:showChangedSettings = on      ! list changed settings
13Init:showChangedParticleData = off ! list changed particle data
14Next:numberCount = 500             ! print message every n events
15Next:numberShowInfo = 3            ! print event information n times
16Next:numberShowProcess = 0         ! print process record n times
17Next:numberShowEvent = 0           ! print event record n times
18
19! 3) Beam parameter settings. Values below agree with default ones.
20Beams:idA = 2212                   ! first beam, p = 2212, pbar = -2212
21Beams:idB = 2212                   ! second beam, p = 2212, pbar = -2212
22Beams:eCM = 14000.                 ! CM energy of collision
23
24! 4) Settings for the hard-process generation.
25SoftQCD:all = on                   ! Allow total sigma = elastic/SD/DD/ND
26! Optionally only study one or a few processes at a time.
27#SoftQCD:elastic = on               ! Elastic
28#SoftQCD:singleDiffractive = on     ! Single diffractive
29#SoftQCD:doubleDiffractive = on     ! Double diffractive
30#SoftQCD:centralDiffractive = on    ! Central diffractive
31#SoftQCD:minbias = on               ! Nondiffractive inelastic
32
33! 5) Optionally switch on hand-set cross section and Coulomb term.
34! Note: these values are illustrative only, not to be taken seriously.
35#SigmaTotal:setOwn = on             ! set your own total/elastic/diffr. sigma
36#SigmaTotal:sigmaTot = 106.         ! total cross section (excluding Coulomb)
37#SigmaTotal:sigmaXX = 5.            ! reduce double diffractive cross section
38#SigmaElastic:setOwn = on           ! suboption for Coulomb term in elastic
39#SigmaElastic:tAbsMin = 4e-5        ! divergence requires lower cutoff
40
41! 6) Optionally select diffractive model.
42Diffraction:PomFlux = 5             ! the MBR model for diffraction
43
44! 7) Multiparton interactions and impact parameter picture.
45! Note: these values are illustrative only, not to be taken seriously.
46MultipartonInteractions:pT0Ref = 2.
47MultipartonInteractions:ecmRef = 1960.
48MultipartonInteractions:ecmPow = 0.16
49MultipartonInteractions:pTmin = 0.2
50MultipartonInteractions:bProfile = 2   
51#MultipartonInteractions:coreRadius = 0.4
52#MultipartonInteractions:coreFraction = 0.5
53MultipartonInteractions:expPow = 1.
54
55! 8) Other settings. Can be expanded as desired.
56! Note: may overwrite some of the values above, so watch out.
57#Tune:pp = 6                         ! use Tune 4Cx
58
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