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Opened 11 years ago

Closed 11 years ago

#256 closed defect (fixed)

MC@NLO event generation stalls

Reported by: jennie Owned by: support@sherpa-mc.de
Priority: major Milestone: rel-2.0.0
Component: Unknown Version: 2.0.beta2
Keywords: Cc:

Description

Varying the Q scale in MC@NLO events in Htt can sometimes lead to an infinite starting scale for the parton shower.

Attachments (1)

RunHtt.dat​ (1.5 KB) - added by jennie 11 years ago.
runcard

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Change History (2)

Changed 11 years ago by jennie

Attachment: RunHtt.dat​ added

runcard

comment:1 Changed 11 years ago by Stefan Hoeche

Resolution: → fixed
Status: new → closed

Hi Jennie,

you need to run METS in exclusive mode and define a core scale for tt~h. As an example: 

  EXCLUSIVE_CLUSTER_MODE 1;
  CORE_SCALE VAR{sqr(MPerp(p[3])+MPerp(p[4])+sqrt(Abs2(p[2])))/4};

Cheers

Stefan

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