W±Z production at hadron colliders in NNLO QCD
Massimiliano GrazziniPhysik-Institut, Universitt Zrich, CH-8057 Zrich, SwitzerlandStefan KallweitKavli Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106, USADirk RathlevTheory Group, Deutsches Elektronen-Synchrotron, D-22607 Hamburg, GermanyMarius WiesemannPhysik-Institut, Universitt Zrich, CH-8057 Zrich, Switzerland
2016en
ABI
Abstract
We report on the first computation of the next-to-next-to-leading order (NNLO) QCD corrections to W Z production in proton collisions. We consider both the inclusive production of on-shell W Z pairs at LHC energies and the total W Z rates including off-shell effects of the W and Z bosons. In the off-shell computation, the invariant mass of the lepton pairs from the Z boson decay is required to be in a given mass window, and the results are compared with the corresponding measurements obtained by the ATLAS and CMS collaborations. The NNLO corrections range from 8% at s=7 TeV to 11% at s=14 TeV and significantly improve the agreement with the LHC data at s=7 and 8 TeV.
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Cited by 20 references