Higher-order QCD effects for associated WH production and decay at the LHC

Ferrera, Giancarlo; Grazzini, Massimiliano; Tramontano, Francesco

doi:10.1007/JHEP04(2014)039

Higher-order QCD effects for associated WH production and decay at the LHC

Giancarlo Ferrera
(
- Milan U. and
- INFN, Milan
)
,
Massimiliano Grazzini
(
- Zurich U.
)
,
Francesco Tramontano
(
- Naples U. and
- INFN, Naples
)

Dec 5, 2013

19 pages

Published in:

JHEP 04 (2014) 039

Published: 2014

e-Print:

1312.1669 [hep-ph]

DOI:

10.1007/JHEP04(2014)039

Report number:

DF-08-2013,
IFUM-1019-FT,
ZU-TH-27-13

View in:

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Abstract: (arXiv)

We consider Standard Model Higgs boson production in association with a W boson in hadron collisions. We supplement the fully exclusive perturbative computation of QCD radiative effects up to next-to-next-to-leading order (NNLO) with the computation of the decay of the Higgs boson into a bb pair at next-to-leading order (NLO). We consider the selection cuts that are typically applied in the LHC experimental analysis, and we compare our fixed-order predictions with the results obtained with the MC@NLO event generator. We find that NLO corrections to the H -> bb decay can be important to obtain a reliable pT spectrum of the Higgs boson, but that, in the cases of interest, their effect is well accounted for by the parton shower Monte Carlo. NNLO corrections to the production process typically decrease the cross section by an amount which depends on the detail of the applied cuts, but they have a mild effect on the shape of the Higgs pT spectrum. We also discuss the effect of QCD radiative corrections on the invariant mass distribution of the Higgs candidate.

Note:

18 pages, 7 figures. References and figure added. Version published on JHEP

quantum chromodynamics: radiative correction
Higgs particle: hadroproduction
W: associated production
Higgs particle: decay
parton: showers
higher-order: 1
higher-order: 2
CERN LHC Coll
Monte Carlo
mass spectrum

References(49)

Figures(13)

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