Unable to produce proton - photon (lpp = 3) process and sometime very different CS from older version of MG5
Dear MG5 Team,
I am using version- 3.1.0 to produce the following:
define p = p b b~
define j = p
generate p a > b b~ j /h t~ t QED<=99
lpp2 = 3
I encounter error as follow:
=======
generate_events run_01
Traceback (most recent call last):
File "/Users/
return self.onecmd_
File "/Users/
return func(arg, **opt)
File "/Users/
self.
File "/Users/
original_
File "/Users/
self.
File "/Users/
stop = Cmd.onecmd_
File "/Users/
return func(arg, **opt)
File "/Users/
jobs, P_zero_result = ajobcreator.
File "/Users/
raise Exception(
Exception: /Users/
=======
(1) Can you suggest where I am doing wrong?
(2) In addition, I was trying to produce the same event with version - 2.6.7, where it was working perfectly well. So, if 3.1.0 don't work, can I use the result from 2.6.7 without any problem?
(3) Another issue I was having while doing the showering of such events with standalone Pythia8, where it was seen that the "remnant electron (since the photon originate from electron)" was missing. Can you suggest if the issue with MG5 or not for version - 2.6.7 or 2.9.3?
(4) Till now I don't get any idea about the "dsqrt2_pdf = ?" value for E_e = 60 GeV? I sometime try with "10" but not sure why and how much should be the value. Can you also give some idea here?
(5) Another process:
define p = p b b~
define j = p
generate p a > b b~ j /h t~ t QED<=99
where I was getting CS values very very different in two different versions (with same setup):
MG_1_5_15 = 172500.0
MG_2_6_7 = 908.756825663
Can you provide the link from where I could get "MG_1_5_15" ? I just wanted the link for cross verification.
Thanks,
Subhasish
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- Olivier Mattelaer
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