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2013:groups:tools:lhef [2013/06/06 10:50] andy.buckley |
2013:groups:tools:lhef [2013/06/06 12:20] andy.buckley MEPS PDF issue |
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Some extra concerns: | Some extra concerns: | ||
- | * Support for weight matrixes to correlate multiple simultaneous scale/PDF variations (Maria Vittoria Garzelli) | + | * Support for weight matrices to correlate multiple simultaneous scale/PDF variations (Maria Vittoria Garzelli) |
- | * Identification of _meaning_ of weights, esp for experiment use where the users know little about how the generator was run | + | * Identification of //meaning// of weights, esp for experiment use where the users know little about how the generator was run (Andy Buckley) |
+ | * | ||
+ | ===== ME/PS PDF tracking ===== | ||
+ | Need to forward the matrix element PDF info to the shower generator, if not already done. HepMC needs to be able to record a separate shower PDF identity (at present MC samples which use an LO shower PDF on top of an NLO LHE event file will report that they only used the LO PDF when the shower generator is queried). | ||