Comment 1 for bug 1741005

What are the cut on the muon?

Cheers,

Olivier
> On 3 Jan 2018, at 09:02, Xin Chen <email address hidden> wrote:
>
> Public bug reported:
>
> Generating simple Zero cross section with e- e+ > mu- mu+, with
>
> 0 = lpp1 ! beam 1 type
> 0 = lpp2 ! beam 2 type
> 5.0 = ebeam1 ! beam 1 total energy in GeV
> 5.0 = ebeam2 ! beam 2 total energy in GeV
>
> in the run card, but get
>
> Survey return zero cross section.
> Typical reasons are the following:
> 1) A massive s-channel particle has a width set to zero.
> 2) The pdf are zero for at least one of the initial state particles
> or you are using maxjetflavor=4 for initial state b:s.
> 3) The cuts are too strong.
> Please check/correct your param_card and/or your run_card.
>
> Any suggestion from the experts?
>
> ** Affects: mg5amcnlo
> Importance: Undecided
> Status: New
>
> --
> You received this bug notification because you are subscribed to
> MadGraph5_aMC@NLO.
> https://bugs.launchpad.net/bugs/1741005
>
> Title:
> Zero cross section with e- e+ > mu- mu+
>
> Status in MadGraph5_aMC@NLO:
> New
>
> Bug description:
> Generating simple Zero cross section with e- e+ > mu- mu+, with
>
> 0 = lpp1 ! beam 1 type
> 0 = lpp2 ! beam 2 type
> 5.0 = ebeam1 ! beam 1 total energy in GeV
> 5.0 = ebeam2 ! beam 2 total energy in GeV
>
> in the run card, but get
>
> Survey return zero cross section.
> Typical reasons are the following:
> 1) A massive s-channel particle has a width set to zero.
> 2) The pdf are zero for at least one of the initial state particles
> or you are using maxjetflavor=4 for initial state b:s.
> 3) The cuts are too strong.
> Please check/correct your param_card and/or your run_card.
>
> Any suggestion from the experts?
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/mg5amcnlo/+bug/1741005/+subscriptions