sqrts versus M(all final state) does not give the same plot

Bug #1797463 reported by Olivier Mattelaer
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
MadAnalysis 5
High
Benjamin Fuks

Bug Description

Hi Benj, Eric,

I'm investigating some issue (in MG5aMC) for the following run:
import model sm-no_b_mass
generate u b > h t d @1
output
launch
set no_parton_cut
set fixed_scale 73

Then when I looked at the plot of
sqrts I get a peak at 0!
But on the plot M(h t d), I do not see such peak. (and the same reported cross-section for both plot)

I have also run the standard test routine on the associate sample and the 4 momentum conservation was reported as ok.

Cheers,

Olivier

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) wrote :
Revision history for this message
Benjamin Fuks (fuks) wrote : Re: [Bug 1797463] [NEW] sqrts versus M(all final state) does not give the same plot

Hi Olivier,

This was a bug with the LHE reader. The first event was not read properly. I fixed it in v1.7beta. In the meantime, can you please try with
  https://madanalysis.irmp.ucl.ac.be/raw-attachment/wiki/MA5SandBox/ma5_v1.7.13.tgz <https://madanalysis.irmp.ucl.ac.be/raw-attachment/wiki/MA5SandBox/ma5_v1.7.13.tgz>

Cheers,

Benj

> On 11 Oct 2018, at 23:00 , Olivier Mattelaer <email address hidden> wrote:
>
> Public bug reported:
>
> Hi Benj, Eric,
>
> I'm investigating some issue (in MG5aMC) for the following run:
> import model sm-no_b_mass
> generate u b > h t d @1
> output
> launch
> set no_parton_cut
> set fixed_scale 73
>
> Then when I looked at the plot of
> sqrts I get a peak at 0!
> But on the plot M(h t d), I do not see such peak. (and the same reported cross-section for both plot)
>
> I have also run the standard test routine on the associate sample and
> the 4 momentum conservation was reported as ok.
>
> Cheers,
>
> Olivier
>
> ** Affects: madanalysis5
> Importance: Undecided
> Status: New
>
> ** Attachment added: "main.pdf"
> https://bugs.launchpad.net/bugs/1797463/+attachment/5200177/+files/main.pdf
>
> --
> You received this bug notification because you are a member of
> MadAnalysisTeam, which is subscribed to MadAnalysis 5.
> https://bugs.launchpad.net/bugs/1797463
>
> Title:
> sqrts versus M(all final state) does not give the same plot
>
> Status in MadAnalysis 5:
> New
>
> Bug description:
> Hi Benj, Eric,
>
> I'm investigating some issue (in MG5aMC) for the following run:
> import model sm-no_b_mass
> generate u b > h t d @1
> output
> launch
> set no_parton_cut
> set fixed_scale 73
>
> Then when I looked at the plot of
> sqrts I get a peak at 0!
> But on the plot M(h t d), I do not see such peak. (and the same reported cross-section for both plot)
>
> I have also run the standard test routine on the associate sample and
> the 4 momentum conservation was reported as ok.
>
> Cheers,
>
> Olivier
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/madanalysis5/+bug/1797463/+subscriptions

Changed in madanalysis5:
importance: Undecided → High
milestone: none → v1.7
status: New → Fix Committed
assignee: nobody → Benjamin Fuks (fuks)
Benjamin Fuks (fuks)
Changed in madanalysis5:
status: Fix Committed → Fix Released
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