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Opened 6 years ago

Closed 6 years ago

#266 closed question (fixed)

Outputting generated events into .root file

Reported by: Owned by:
Priority: major Milestone: rel-2.0.0
Component: Unknown Version: 2.0.beta2
Keywords: root, output Cc:


I am running Sherpa with one of the Example runcards (Examples/Jets_at_LeptonColliders/LEP_Jets_MCatNLO/Run.dat) and I have added the following line to the (run) section of the runcard:


in order to produce an output Root file. However, even if the file is produced this is emtpy and the following error is reported by Sherpa (after the second run): Sherpa: Output_RootNtuple::Output throws fatal error:

Error in NLO type

Exception_Handler::GenerateStackTrace?(..): Generating stack trace {

0x2ac12755ef10 in 'ATOOLS::Terminate()' (Exception_Handler.C:216) 0x402ee2 in 'main' (Main.C:72)


how can I fix this? Best regards,


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Change History (1)

comment:1 Changed 6 years ago by Stefan Hoeche

Resolution: fixed
Status: newclosed

Dear Stefano,

you can generate Root NTuples only for fixed-order calculations. In your case, please use HepMC2 or HEPEVT output.

Best Stefan

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