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.

Abstract

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_t) 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
• Status: Published
• Refereed: No
• 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
• ISSN: 1824-8039
• 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

Related URLs

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