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arXiv · 1611.08119

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

Werner Bernreuther·Peter Galler·Clemens Mellein·Zong-Guo Si·Peter Uwer
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Abstract

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 $t\bar{t}$ 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 ($m_t$) 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.

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Werner Bernreuther, Peter Galler, Clemens Mellein, Zong-Guo Si, Peter Uwer. 2016-11-24. Heavy Higgs boson production and decay into top quarks at the LHC. https://arxiv.org/abs/1611.08119

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