Wednesday, July 10, 2013

1307.2252 (Daniel Maître et al.)

Simulated NNLO for high-pT observables in vector boson + jets production
at the LHC
   [PDF]

Daniel Maître, Sebastian Sapeta
We present a study of higher order QCD corrections beyond NLO to processes with an electroweak vector boson, W or Z, in association with jets. We focus on the regions of high transverse momenta of commonly used differential distributions. We employ the LoopSim method to merge NLO samples of different multiplicity obtained from MCFM and from BLACKHAT+SHERPA in order to compute the dominant part of the NNLO corrections for high-pT observables. We find that these corrections are indeed substantial for a number of experimentally relevant observables. For other observables, they lead to significant reduction of scale uncertainties.
View original: http://arxiv.org/abs/1307.2252

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