标题：Heavy Higgs boson production and decay into top quarks at the LHC
作者：Bernreuther, Werner ;Galler, Peter ;Mellein, Clemens ;Si, Zong-Guo ;Uwer, Peter
作者机构：[Bernreuther, Werner ;Mellein, Clemens ] Institut für Theoretische Teilchenphysik und Kosmologie, RWTH Aachen University, Aachen; 52056, Germany; 更多
会议名称：38th International Conference on High Energy Physics, ICHEP 2016
会议日期：3 August 2016 through 10 August 2016
来源：Proceedings of Science
摘要：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 tt 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 (mt) 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. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).