Heavy Higgs boson production and decay into top quarks at the LHC

Bernreuther, W., Galler, P. , Mellein, C., Si, Z.-G. and Uwer, P. (2017) Heavy Higgs boson production and decay into top quarks at the LHC. Proceedings of Science, ICHEP(2016), 418.

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In this contribution we report on the calculation of the next-to-leading order (NLO) QCD corrections to the hadro-production of heavy neutral Higgs bosons and their decay into top-quark pairs within the type-II two-Higgs-doublet extension of the standard model (SM). We take into account the contributions from resonant Higgs boson production, the non-resonant SM t<span style="text-decoration: overline">t</span> background as well as the interference of these two contributions. The NLO corrections to the signal and interference contributions are calculated by applying the heavy top-quark mass (m<sub>t</sub>) limit including an effective rescaling. In our NLO calculation the QCD-Higgs interference is evaluated in the resonance region that provides the dominant part of the heavy Higgs-boson contributions. Evaluating representative CP-conserving and CP-violating parameter scenarios within the two-Higgs-doublet model (2HDM) we present results for different distributions and, in addition, for observables that depend on the top-quark spin.

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:06 February 2017
Copyright Holders:Copyright © 2017 The Authors
First Published:First published in Proceedings of Science ICHEP2016: 418
Publisher Policy:Reproduced under a Creative Commons License
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