Radiative corrections to decays of charged Higgs bosons in two Higgs doublet models
Radiative corrections to decays of charged Higgs bosons in two Higgs doublet models
复制标题
DOI：
10.1016/j.nuclphysb.2021.115581
复制
发表时间：
2021-08
期刊：
影响因子：
--
通讯作者：
Masashi Aiko;S. Kanemura;K. Sakurai
中科院分区：
文献类型：
--
作者：
Masashi Aiko;S. Kanemura;K. Sakurai
计算了四种具有软破缺离散Z2对称性的双Higgs偶重态模型（THDMs）中荷电Higgs玻色子衰变率的次领先阶（NLO）电弱（EW）修正.计算了荷电希格斯玻色子的衰变分支比，包括NLO EW修正，以及QCD修正到次-次-首阶（NNLO）。我们全面研究的NLO EW修正的分支比在近对齐的情况下，希格斯玻色子的质量为125 GeV的耦合常数接近的标准模型中预测的影响。此外，在近对齐的情况下，我们讨论了是否可以区分四种类型的THDM通过带电希格斯玻色子的衰变。我们发现，带电希格斯分支比的特征预测，可以得到所有类型的THDMs，每种类型的THDMs是分开的，和信息的THDMs的内部参数可以从各种衰变分支比的大小提取。
We calculate the next-to-leading order (NLO) electroweak (EW) corrections to decay rates of charged Higgs bosons for various decay modes in the four types of two Higgs doublet models (THDMs) with the softly broken discrete Z 2 symmetry. Decay branching ratios of charged Higgs bosons are evaluated including NLO EW corrections, as well as QCD corrections up to next-to-next-to-leading order (NNLO). We comprehensively study impacts of the NLO EW corrections to the branching ratios in nearly alignment scenarios where the couplings constants of the Higgs boson with the mass of 125 GeV are close to those predicted in the standard model. Furthermore, in the nearly alignment scenario, we discuss whether or not the four types of THDMs can be distinguished via the decays of charged Higgs bosons. We find that characteristic predictions of charged Higgs branching ratios can be obtained for all types of the THDMs, by which each type of the THDMs is separated, and information on the internal parameters of the THDMs can be extracted from the magnitudes of the various decay branching ratios.