One-loop corrections to the two-body decays of the neutral Higgs bosons in the complex NMSSM
One-loop corrections to the two-body decays of the neutral Higgs bosons in the complex NMSSM
复制标题
DOI：
10.1140/epjc/s10052-020-08520-8
复制
发表时间：
2019-07
期刊：
影响因子：
--
通讯作者：
J. Baglio;Thi Nhung Dao;M. Mühlleitner
中科院分区：
文献类型：
--
作者：
J. Baglio;Thi Nhung Dao;M. Mühlleitner
由于到目前为止还没有观测到新物理现象的直接迹象，在希格斯扇区的间接搜索变得越来越重要。然而，由于发现的希格斯玻色子表现得非常像标准模型（SM），间接的新物理表现通常被认为是很小的。在理论方面，这使得对希格斯粒子参数和观测值的精确预测必不可少。在本文中，我们在违反cp的SM的次最小超对称扩展（NMSSM）的框架中，给出了中性希格斯玻色子在壳层和非环诱导的衰变的完整次领先阶（SUSY-）电弱修正。我们还研究了轻希格斯玻色子衰变为费米子对时可能存在的测量依赖问题。与已提供的对彩色最终状态的SUSY-QCD校正一起，新计算的susy -电弱校正在Fortran代码mssmcalc中实现，该代码已经包含了最先进的QCD校正。新代码名为dnmssmcalcew。通过这种方式，我们以目前尽可能高的精度提供了NMSSM希格斯玻色子衰变和分支比，从而有助于在当前和未来的对撞机中寻找新物理。
Since no direct signs of new physics have been observed so far indirect searches in the Higgs sector have become increasingly important. With the discovered Higgs boson behaving very standard model (SM)-like, however, indirect new physics manifestations are in general expected to be small. On the theory side, this makes precision predictions for the Higgs parameters and observables indispensable. In this paper, we provide in the framework of the CP-violating next-to-minimal supersymmetric extension of the SM (NMSSM) the complete next-to-leading order (SUSY-)electroweak corrections to the neutral Higgs boson decays that are on-shell and non-loop induced. We also investigate possible gauge-dependence issues in the decays of light Higgs bosons into fermion pairs. Together with the also provided SUSY-QCD corrections to colored final states, the newly calculated SUSY-electroweak corrections are implemented in the Fortran codeNMSSMCALCwhich already includes the state-of-the art QCD corrections. The new code is calledNMSSMCALCEW. This way we provide the NMSSM Higgs boson decays and branching ratios at presently highest possible precision and thereby contribute to the endeavor of searching for New Physics at present and future colliders.