W+W− production at the LHC: fiducial cross sections and distributions in NNLO QCD

By M. Grazzini, Stefan Kallweit, Stefano Pozzorini, D. Rathlev, M. Wiesemann. 2015

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A bstractWe consider QCD radiative corrections to W+W− production at the LHC and present the first fully differential predictions for this process at next-to-next-to-leading order (NNLO) in perturbation theory. Our computation consistently includes the leptonic decays of the W bosons, taking into account spin correlations, off-shell effects and non-resonant contributions. Detailed predictions are presented for the different-flavour channel pp→μ+e−νμν¯e+X$$ pp\to {\mu}^{+}{e}^{-}{\nu}_{\mu }{\overline{\nu}}_e+X $$ at s=8$$ \sqrt{s}=8 $$ and 13 TeV. In particular, we discuss fiducial cross sections and distributions in the presence of standard selection cuts used in experimental W+W− and H → W+W− analyses at the LHC. The inclusive W+W− cross section receives large NNLO corrections, and, due to the presence of a jet veto, typical fiducial cuts have a sizeable influence on the behaviour of the perturbative expansion. The availability of differential NNLO predictions, both for inclusive and fiducial observables, will play an important role in the rich physics programme that is based on precision studies of W+W− signatures at the LHC.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4e507f3101b6a35b079a3bad2a9fc5c81d79c3f2

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Citations in the corpus

Fully differential NNLO computations with MATRIX (2017, background): “[59–61], for the NNLO calculations of Zγ [30,31], W±γ [31] ZZ [33,34], W+W− [36,37], W±Z [38,39] and HH [27] production3 and the importance of including NNLO corrections for these processes is evident for both total rates and differential distributions.”
Les Houches 2017: Physics at TeV Colliders Standard Model Working Group Report (2017, methodology): “V V ′: Complete N(2)LOQCD are now available for all vector-boson pair production processes, namely WW [160,165], ZZ [161,164], WZ [163,166], Zγ [158,162], Wγ [162], using the qT subtraction method.”
W±Z production at the LHC: fiducial cross sections and distributions in NNLO QCD (2016, methodology): “[19, 36], for the calculations of Zγ [37, 38], ZZ [39, 40], W+W− [41, 42], W±γ [38] and W±Z [18] production at NNLO QCD as well as in the resummed computations of the ZZ and W+W− transverse-momentum spectra [29] at NNLL+NNLO.”