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Title: Two-Loop Virtual Top-Quark Effect on Higgs-Boson Decay to Bottom Quarks

Abstract

In most of the mass range encompassed by the limits from the direct search and the electroweak precision tests, the Higgs boson of the standard model preferably decays to bottom quarks. We present, in analytic form, the dominant two-loop electroweak correction, of O(G{sub F}{sup 2}m{sub t}{sup 4}), to the partial width of this decay. It amplifies the familiar enhancement due to the O(G{sub F}m{sub t}{sup 2}) one-loop correction by about +16% and thus more than compensates the screening by about -8% through strong-interaction effects of order O({alpha}{sub s}G{sub F}m{sub t}{sup 2})

Authors:
; ;  [1]
  1. II. Institut fuer Theoretische Physik, Universitaet Hamburg, Luruper Chaussee 149, 22761 Hamburg (Germany)
Publication Date:
OSTI Identifier:
20955464
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevLett.98.071602; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B QUARKS; HIGGS BOSONS; PARTICLE DECAY; STANDARD MODEL; STRONG INTERACTIONS; T QUARKS

Citation Formats

Butenschoen, Mathias, Fugel, Frank, and Kniehl, Bernd A. Two-Loop Virtual Top-Quark Effect on Higgs-Boson Decay to Bottom Quarks. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.071602.
Butenschoen, Mathias, Fugel, Frank, & Kniehl, Bernd A. Two-Loop Virtual Top-Quark Effect on Higgs-Boson Decay to Bottom Quarks. United States. doi:10.1103/PHYSREVLETT.98.071602.
Butenschoen, Mathias, Fugel, Frank, and Kniehl, Bernd A. Fri . "Two-Loop Virtual Top-Quark Effect on Higgs-Boson Decay to Bottom Quarks". United States. doi:10.1103/PHYSREVLETT.98.071602.
@article{osti_20955464,
title = {Two-Loop Virtual Top-Quark Effect on Higgs-Boson Decay to Bottom Quarks},
author = {Butenschoen, Mathias and Fugel, Frank and Kniehl, Bernd A.},
abstractNote = {In most of the mass range encompassed by the limits from the direct search and the electroweak precision tests, the Higgs boson of the standard model preferably decays to bottom quarks. We present, in analytic form, the dominant two-loop electroweak correction, of O(G{sub F}{sup 2}m{sub t}{sup 4}), to the partial width of this decay. It amplifies the familiar enhancement due to the O(G{sub F}m{sub t}{sup 2}) one-loop correction by about +16% and thus more than compensates the screening by about -8% through strong-interaction effects of order O({alpha}{sub s}G{sub F}m{sub t}{sup 2})},
doi = {10.1103/PHYSREVLETT.98.071602},
journal = {Physical Review Letters},
number = 7,
volume = 98,
place = {United States},
year = {Fri Feb 16 00:00:00 EST 2007},
month = {Fri Feb 16 00:00:00 EST 2007}
}