001 # Parameters for b-production
002 # To include all processes including gluon splitting and flavour excitation
003 # use all qq-production.
004 # Note there is no reason to expect that the parameters fitted in CDF 4097
005 # are good for the PDF given.
006
007 module talk Pythia
008 PythiaMenu
009 listFirst set 1
010 listLast set 2
011 # msel set 5
012 msel set 0
013 # to print full decay table
014 # inListLevel set 12
015 commonMenu
016 #...Heavy Flavour-production
017 set_msub -index=81 -value=1
018 set_msub -index=82 -value=1
019 set_msub -index=83 -value=0
020 set_msub -index=84 -value=1
021 #...b production
022 set_mstp -index=7 -value=5
023 # qq processes
024 set_msub -index=11 -value=0
025 set_msub -index=12 -value=0
026 set_msub -index=13 -value=0
027 set_msub -index=28 -value=0
028 set_msub -index=53 -value=0
029 set_msub -index=68 -value=0
030 # change mother pointers for the fragmenting system
031 # set_mstu -index=16 -value=2
032 # PDFs - CTEQ Set 5L (LO)
033 set_mstp -index=51 -value=19070
034 set_mstp -index=52 -value=2
035 # PDFs - MRS Set 2001 LO
036 # set_mstp -index=51 -value=20060
037 # set_mstp -index=52 -value=2
038 # Parameters as in CDF4097
039 set_mstp -index=61 -value=1
040 set_mstp -index=71 -value=1
041 set_mstp -index=81 -value=1
042 set_mstp -index=82 -value=3
043 set_parp -index=85 -value=1.0
044 set_parp -index=86 -value=1.0
045 #
046 set_mstp -index=33 -value=1
047 set_parp -index=31 -value=1.69
048 #
049 set_parj -index=21 -value=0.613
050 set_mstj -index=11 -value=3
051 set_parj -index=55 -value=-0.0063
052 # These parameters govern cut-offs for multiple scattering
053 # and changed somewhat at 6.129, here they are reset to the
054 # earlier definitions. The parameters defining the underlying
055 # event are sensitive to PDF used anyway.
056 set_parp -index=81 -value=1.40
057 set_parp -index=82 -value=1.55
058 set_parp -index=90 -value=0.0
059 #
060 set_mstp -index=111 -value=1
061 #
062 set_mdcy -masscode=310 -decay=0
063 show_mstp
064 exit
065 exit
066 exit
067
068
069
070
071
Send problems or questions to cdfcode@fnal.gov
