aMC won't run g g > h b b~ at LO

Bug #1749479 reported by Samuel Homiller
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
MadGraph5_aMC@NLO
Invalid
Undecided
Unassigned

Bug Description

Hi experts,
I'm attempting to run the process g g > h b b~ [QCD] at LO using the SM, resolving the top quark loop. The process runs fine in MG5 using the heft, but when I try to run the one loop computation, aMC fails during compilation. I've attached the debug.log file below. Thanks for any help,

Sam

Revision history for this message
Samuel Homiller (shomiller) wrote :
Revision history for this message
Olivier Mattelaer (olivier-mattelaer) wrote : Re: [Bug 1749479] [NEW] aMC won't run g g > h b b~ at LO

Hi,

This one is actually highly non trivial and you will need to hack the code to have what you want.
The first question here is what do you want to simulate
1) The loop induced contribution only [possible but need a simple hack for adding a loop-filter]
2) the interference between the loop-induced and born diagram [possible but more difficult]
3) the born + loop-induced amplitude square including interference [that one I do not think is possible, expect adding the samples of the two previous approach]

Your syntax is certainly not valid so this is not clear what you want to achieve.

Cheers,

Olivier

> On 14 Feb 2018, at 16:05, Samuel Homiller <email address hidden> wrote:
>
> Public bug reported:
>
> Hi experts,
> I'm attempting to run the process g g > h b b~ [QCD] at LO using the SM, resolving the top quark loop. The process runs fine in MG5 using the heft, but when I try to run the one loop computation, aMC fails during compilation. I've attached the debug.log file below. Thanks for any help,
>
> Sam
>
> ** Affects: mg5amcnlo
> Importance: Undecided
> Status: New
>
> ** Attachment added: "run_01_LO_tag_1_debug.log"
> https://bugs.launchpad.net/bugs/1749479/+attachment/5055177/+files/run_01_LO_tag_1_debug.log
>
> --
> You received this bug notification because you are subscribed to
> MadGraph5_aMC@NLO.
> https://bugs.launchpad.net/bugs/1749479
>
> Title:
> aMC won't run g g > h b b~ at LO
>
> Status in MadGraph5_aMC@NLO:
> New
>
> Bug description:
> Hi experts,
> I'm attempting to run the process g g > h b b~ [QCD] at LO using the SM, resolving the top quark loop. The process runs fine in MG5 using the heft, but when I try to run the one loop computation, aMC fails during compilation. I've attached the debug.log file below. Thanks for any help,
>
> Sam
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/mg5amcnlo/+bug/1749479/+subscriptions

Changed in mg5amcnlo:
status: New → Invalid
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