NNLO QCD corrections to associated WH production and H →b b decay NNLO QCD CORRECTIONS to ASSOCIATED WH ⋯ CAOLA et al [NNLO QCD corrections to associated WH production and H -> b <(b)over bar > decay]
Articolo
Data di Pubblicazione:
2018
Citazione:
NNLO QCD corrections to associated WH production and H →b b decay NNLO QCD CORRECTIONS to ASSOCIATED WH ⋯ CAOLA et al [NNLO QCD corrections to associated WH production and H -> b <(b)over bar > decay] / F. Caola, G. Luisoni, K. Melnikov, R. Röntsch. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 97:7(2018 Apr 23), pp. 075006.075006-1-075006.075006-17. [10.1103/PhysRevD.97.074022]
Abstract:
We present a computation of the next-to-next-to-leading-order (NNLO) QCD corrections to the production of a Higgs boson in association with a W boson at the LHC and the subsequent decay of the Higgs boson into a bb pair, treating the b quarks as massless. We consider various kinematic distributions and find significant corrections to observables that resolve the Higgs decay products. We also find that a cut on the transverse momentum of the W boson, important for experimental analyses, may have a significant impact on kinematic distributions and radiative corrections. We show that some of these effects can be adequately described by simulating QCD radiation in Higgs boson decays to b quarks using parton showers. We also describe contributions to Higgs decay to a bb pair that first appear at NNLO and that were not considered in previous fully differential computations. The calculation of NNLO QCD corrections to production and decay sub-processes is carried out within the nested soft-collinear subtraction scheme presented by some of us earlier this year. We demonstrate that this subtraction scheme performs very well, allowing a computation of the coefficient of the second-order QCD corrections at the level of a few per mill.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
F. Caola, G. Luisoni, K. Melnikov, R. Röntsch
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