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

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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 \( {\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle\thicksim}$}}{ > }} \) 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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Authors and Affiliations

  1. Institut für Theoretische Physik und Astrophysik, Universität Würzburg, D-97074, Würzburg, Germany

    Ansgar Denner

  2. Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, D-79104, Freiburg, Germany

    Stefan Dittmaier

  3. Paul Scherrer Institut, Würenlingen und Villigen, CH-5232, Villigen PSI, Switzerland

    Stefan Kallweit

  4. Institut für Theoretische Physik, Universität Zürich, CH-8057, Zürich, Switzerland

    Stefan Kallweit

  5. Institut für Theoretische Teilchenphysik und Kosmologie, RWTH Aachen University, D-52056, Aachen, Germany

    Alexander Mück

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  1. Ansgar Denner
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Correspondence to Stefan Kallweit.

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ArXiv ePrint: 1112.5142

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Denner, A., Dittmaier, S., Kallweit, S. et al. Electroweak corrections to Higgs-strahlung off W/Z bosons at the Tevatron and the LHC with Hawk. J. High Energ. Phys. 2012, 75 (2012). https://doi.org/10.1007/JHEP03(2012)075

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