Heavy Higgs boson resonances and their decay into top quarks at the LHC

Bernreuther, W., Galler, P. , Mellein, C., Si, Z.-G. and Uwer, P. (2017) Heavy Higgs boson resonances and their decay into top quarks at the LHC. Proceedings of Science, LHCP(2016), 088.

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We investigate, within the type-II two-Higgs-doublet extension of the standard model (SM), the impact of heavy neutral Higgs boson resonances with unsuppressed Yukawa couplings to top quarks on top-quark pair production at the LHC at next-to-leading order (NLO) in the strong coupling constant. We take into account the resonant Higgs boson contributions, the non-resonant SM t<span style="text-decoration: overline">t</span> continuum and the interference of these two contributions. The NLO QCD corrections to heavy Higgs production and the interference contributions are calculated in the large top-quark mass (m<sub>t</sub>) limit, including an effective K-factor rescaling. Our evaluation of the QCD-Higgs interference is focused on the Higgs resonance region. Using representative CP-conserving as well as CP-violating parameter scenarios phenomenological results are presented for different observables.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Galler, Dr Peter
Authors: Bernreuther, W., Galler, P., Mellein, C., Si, Z.-G., and Uwer, P.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Research Group:Particle Physics Theory
Journal Name:Proceedings of Science
Journal Abbr.:PoS
Publisher:Scuola Internazionale Superiore di Studi Avanzati
Published Online:14 September 2016
Copyright Holders:Copyright © 2016 The Authors
First Published:First published in Proceedings of Science LHCP2016: 088
Publisher Policy:Reproduced under a Creative Commons License
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