[Rivet] Rivet Trouble

[Chris Pollard]

Hi Eike,

Indeed, Rivet expects the beam energies to be constant across a run because
in general the cross sections of a process will change with COM energy.

Is there a reason for not using two separate files? Sorry for my
ignorance---I'm not familiar with this particular analysis.

Chris

On Thu, Jan 21, 2016 at 2:26 AM, Eike Germann <eger4 at student.monash.edu>
wrote:

> Hey there :)
>
> I'm trying to run an analysis with Pythia 8 and Rivet (ALICE_2010_S8624100
> in particular) requiring multiple beams, each of which I've stored in a
> separate .hepmc file. When I hand these over to Rivet (doesn't matter if I
> use fifo or pre-written, disc based .hepmc), Rivet reads the first file
> correctly and then complains
>
> Reading events from 'main42_2360_out.hepmc'
> Event beams mismatch: [PROTON, PROTON] @ 2360 GeV vs. first beams [PROTON
> @ 450 GeV, PROTON @ 450 GeV] @ 900 GeV
>
> I can't find separate instructions on how to use Rivet for an analysis
> like this other than using multiple output files, so what's going on?
>
> Thanks
> Eike
>
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