论文标题
在两个Higgs Doublet模型中，较重的CP-EVE-even Higgs玻色子的衰减的近级订单更正
Next-to-leading order corrections to decays of the heavier CP-even Higgs boson in the two Higgs doublet model
论文作者
论文摘要
我们研究了Electroweak（EW），标量和QCD校正对额外的CP-even Higgs Boson（$ H $）的全套衰减分支比的影响，并在两个Higgs Doublet模型中具有柔软破损的$ Z_2 $对称性。我们在重新归一化的顶点中采用了改进的仪表独立壳方案。我们特别关注在对齐限制附近的场景上，其中发现的125 Gev Higgs Boson（$ H $）的耦合与标准型号的耦合相吻合，而$ HHH $耦合在树级上消失了。 $ h \ to hh $的重新归一化衰减率也可以从树高的预测中显着改变，因为即使在近对准情况下，由于其他Higgs玻色子的未倒置环效应，也可以改变。我们发现，辐射校正与$ h \ hh $的分支比率在此情况下可能是几个水平，在效率单位性，真空稳定性和EW Precision数据的限制下，额外的Higgs玻色子的质量在此水平上是额外的。可以为额外的希格斯玻色子之间的质量差异获得进一步的校正。
We investigate the impact of electroweak (EW), scalar and QCD corrections to the full set of decay branching ratios of an additional CP-even Higgs boson ($H$) in the two Higgs doublet model with a softly broken $Z_2$ symmetry. We employ the improved gauge independent on-shell scheme in the renormalized vertices. We particularly focus on the scenario near the alignment limit in which couplings of the discovered 125 GeV Higgs boson ($h$) coincide with those of the standard model while the $Hhh$ coupling vanishes at tree level. The renormalized decay rate for $H\to hh$ can significantly be changed from the prediction at tree level due to non-decoupling loop effects of additional Higgs bosons, even in the near alignment case. We find that the radiative corrections to the branching ratio of $H\to hh$ can be a few ten percent level in the case with the masses of additional Higgs bosons being degenerate under the constraints of perturbative unitarity, vacuum stability and the EW precision data. Further sizable corrections can be obtained for the case with a mass difference among the additional Higgs bosons.
