[Rivet] turn off "Event beams mismatch error"

[Yang Ting Chien]

Dear Rivet authors,

I am starting to use Rivet to analyze some hepmc files I generated using jewel, a heavy ion collision generator. Since protons and neutrons are both present in a heavy nuclei, I have beams of protons and neutrons present in the hepmc event file. However, rivet detects the beam mismatch and gives the following error message and exits:

Event beams mismatch: [PROTON, NEUTRON] @ 5020 GeV vs. first beams [PROTON @ (2510; 0, 0, 2510) GeV, PROTON @ (2510; 0, 0, -2510) GeV] @ 5020 GeV

I couldn't find a way to successfully ask rivet to skip this beam check. Could you help me resolve this issue? I attached an analysis I will extend to include jet substructure studies.

Thank a lot,
Yang-Ting

LHC Theory Initiative Fellow
MIT Center for Theoretical Physics
617-253-7194
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