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Electroweak corrections to Higgs-strahlung off W/Z bosons at the Tevatron and the LHC with Hawk


Denner, Ansgar; Dittmaier, Stefan; Kallweit, Stefan; Mück, Alexander (2012). Electroweak corrections to Higgs-strahlung off W/Z bosons at the Tevatron and the LHC with Hawk. Journal of High Energy Physics, 2012(3):1-21.

Abstract

The associate production of Higgs bosons with W or Z bosons, known as Higgs-strahlung, is an important search channel for Higgs bosons at the hadron colliders Tevatron and LHC for low Higgs-boson masses. We refine a previous calculation of next-to-leading-order electroweak corrections (and recalculate the QCD corrections) upon including the leptonic decay of the W/Z bosons, thereby keeping the fully differential information of the 2-lepton + Higgs final state. The gauge invariance of the W/Z-resonance treatment is ensured by the use of the complex-mass scheme. The electroweak corrections, which are at the level of - (5-10)% for total cross sections, further increase in size with increasing transverse momenta p T in differential cross sections. For instance, for p T,H {\underset{raise0.3emsmashriptscriptstylethicksim}{ > }} 200 GeV, which is the interesting range at the LHC, the electroweak corrections to WH production reach about -14% for M H = 120 GeV. The described corrections are implemented in the Hawk Monte Carlo program, which was initially designed for the vector-boson-fusion channel, and are discussed for various distributions in the production channels {text{pp}}/{text{p}}overline {text{p}} to {text{H}} + l{{v}l}{{l}^{ - }}{{l}^{ + }}/ + X.

Abstract

The associate production of Higgs bosons with W or Z bosons, known as Higgs-strahlung, is an important search channel for Higgs bosons at the hadron colliders Tevatron and LHC for low Higgs-boson masses. We refine a previous calculation of next-to-leading-order electroweak corrections (and recalculate the QCD corrections) upon including the leptonic decay of the W/Z bosons, thereby keeping the fully differential information of the 2-lepton + Higgs final state. The gauge invariance of the W/Z-resonance treatment is ensured by the use of the complex-mass scheme. The electroweak corrections, which are at the level of - (5-10)% for total cross sections, further increase in size with increasing transverse momenta p T in differential cross sections. For instance, for p T,H {\underset{raise0.3emsmashriptscriptstylethicksim}{ > }} 200 GeV, which is the interesting range at the LHC, the electroweak corrections to WH production reach about -14% for M H = 120 GeV. The described corrections are implemented in the Hawk Monte Carlo program, which was initially designed for the vector-boson-fusion channel, and are discussed for various distributions in the production channels {text{pp}}/{text{p}}overline {text{p}} to {text{H}} + l{{v}l}{{l}^{ - }}{{l}^{ + }}/ + X.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:March 2012
Deposited On:22 Jan 2013 17:10
Last Modified:05 Apr 2016 16:21
Publisher:Springer
ISSN:1029-8479
Additional Information:The original publication is available at www.springerlink.com
Publisher DOI:https://doi.org/10.1007/JHEP03(2012)075

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