../bin/subproc_cycle returns all zeros for cross sections of p,p->t,T

Hello,

(sorry I do not see your name)

what is the energy of the collision did you put in?

Please cut and paste the content of one of your prt files which are
located in results folder.

Regards,

Alexander

On 14/10/2019 12:04, Suzanne Rosenzweig wrote:
> New question #685111 on CalcHEP:
> https://answers.launchpad.net/calchep/+question/685111
>
> I am working on a practice assignment for a course and we are asked to find the total cross section of p, p -> t, T (we take p to be composite of G, u, U, d, D for simplicity). However, even after setting the parton distribution function, the results of running the script ../bin/subproc_cycle yield all zeros for the individual and total cross sections. Any advice? Thank you!
>
--
______________________________________________________________________
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Thank you for answering! My name is Suzanne. The CM energy is 13 TeV (so p=6500 GeV). Here is one of the prt files:

> cat prt_12

#Subprocess 2 ( u, U -> t, T )
#Session_number 12
#Initial_state inP1=6.500000E+03 inP2=6.500000E+03
 Polarizations= { 0.000000E+00 0.000000E+00 }
  StrFun1="PDT:cteq6l1(proton)" 2212
  StrFun2="PDT:cteq6l1(proton)" 2212

#Physical_Parameters
        EE = 3.133300000000000E-01
        SW = 4.740000000000000E-01
         Q = 1.000000000000000E+02
        MW = 8.038500000000001E+01
       Mtp = 1.725000000000000E+02
      McMc = 1.230000000000000E+00
      MbMb = 4.250000000000000E+00
  alphaSMZ = 1.184000000000000E-01
        Ml = 1.777000000000000E+00
        Mh = 1.250000000000000E+02
----

#Breit-Wigner BW range 2.700000
t-channel widths 0
GI trick in s- 0
GI trick in t- 1
#VVdecays 1

#alphaQCD alphaPDF=1 alpha(MZ)=1.184000E-01 NF=5 Order=2 MbMb=4.200000E+00 Mtp=1.730000E+02
#QCDscales
 Renormalization M1
 Factorization1 Qren
 Factorization2 Qpdf1
 Showering Qren

#Composites
*** Table ***
 Composites
  Name |> Comma separated list of particles <|
p* |G,d,D,u,U
=========================================================================

#Cuts
*** Table ***
 Cuts
!| Parameter |> Min bound <|> Max bound <|
%|T(p*) | 50 |
%|J(p*,p*) | 0.5 |
============================================

#END

#Subprocess 2 ( u, U -> t, T )
#Session_number 12
#Initial_state inP1=6.500000E+03 inP2=6.500000E+03
 Polarizations= { 0.000000E+00 0.000000E+00 }
  StrFun1="PDT:cteq6l1(proton)" 2212
  StrFun2="PDT:cteq6l1(proton)" 2212

#Physical_Parameters
        EE = 3.133300000000000E-01
        SW = 4.740000000000000E-01
         Q = 1.000000000000000E+02
        MW = 8.038500000000001E+01
       Mtp = 1.725000000000000E+02
      McMc = 1.230000000000000E+00
      MbMb = 4.250000000000000E+00
  alphaSMZ = 1.184000000000000E-01
        Ml = 1.777000000000000E+00
        Mh = 1.250000000000000E+02
----

#Breit-Wigner BW range 2.700000
t-channel widths 0
GI trick in s- 0
GI trick in t- 1
#VVdecays 1

#alphaQCD alphaPDF=1 alpha(MZ)=1.184000E-01 NF=5 Order=2 MbMb=4.200000E+00 Mtp=1.730000E+02
#QCDscales
 Renormalization M1
 Factorization1 Qren
 Factorization2 Qpdf1
 Showering Qren

#Composites
*** Table ***
 Composites
  Name |> Comma separated list of particles <|
p* |G,d,D,u,U
=========================================================================

#Cuts
*** Table ***
 Cuts
!| Parameter |> Min bound <|> Max bound <|
%|T(p*) | 50 |
%|J(p*,p*) | 0.5 |
============================================

#END
   1 0.0000E+00 0.00E+00 98568
   2 0.0000E+00 0.00E+00 98568
   3 0.0000E+00 0.00E+00 98568
   4 0.0000E+00 0.00E+00 98568
   5 0.0000E+00 0.00E+00 98568
 < > 0.0000E+00 0.00E+00 492840 0
   1 0.0000E+00 0.00E+00 98568
   2 0.0000E+00 0.00E+00 98568
   3 0.0000E+00 0.00E+00 98568
   4 0.0000E+00 0.00E+00 98568
   5 0.0000E+00 0.00E+00 98568
 < > 0.0000E+00 0.00E+00 492840 0