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

• Published in: The journal of high energy physics Vol. 2012; no. 3
• Main Authors: Denner, Ansgar, Dittmaier, Stefan, Kallweit, Stefan, Mück, Alexander
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01-03-2012; Springer Nature B.V
• Subjects: Bosons; Classical and Quantum Gravitation; Computer simulation; Cross-sections; Elementary Particles; Gauge invariance; Higgs bosons; High energy physics; Large Hadron Collider; Leptons; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Quarks; Relativity Theory; String Theory; NLO Computations; Hadronic Colliders
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP03(2012)075

A
bstract
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
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
.