eMELA interface with LO calculations
Hi,
We are attempting to implement lepton PDFs for calculations of high-energy (multi-TeV) e+e- or mu+mu- collisions in MadGraph5, using files in an LHAPDF-like format, and the existing interfaces in MG5. With a couple of minor tweaks, we managed to get them working with the LHAPDF6 interface, but (as we should have expected) ran into issues with the phase space integration when trying to use the muon PDFs that peak at x -> 1.
To our understanding, the known way of dealing with this is to instead use the interface with eMELA, where the limit as x -> 1 is replaced with the known analytic result.
Unfortunately, when trying to use the eMELA interface for LO processes, the MadGraph interface seems to reject setting 'pdlabel' to 'emela' (it accepts 'emela' as an option in the run card when doing one-loop calculations by appending [QED], but then we run into other issues, and can't generate events, and we are ultimately interested in LO calculations with BSM models anyway). Is there any way to use this interface with the current version of MG5, or perhaps with minor changes?
Thanks for any help you can provide,
Sam
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