论文标题
$ {\ overline b} \ to x_s/x_dγ$的cp不对称，带有三个higgs doublets
CP asymmetries of ${\overline B}\to X_s/X_dγ$ in models with three Higgs doublets
论文作者
论文摘要
直接CP不对称（$ {\ cal a} _ {cp} $）在$ {\ overline b} \ tox_sγ$和$ {\ overline b} \ to x_ {s+d}γ$ proge of $ 1 \％$ 1 \％的订单的包含性衰减中。在这项工作中，研究了三个不对称性，以三higgs-doublet模型（3HDM）的上下文进行了研究，并且显示所有三个$ {\ cal a} _ {cp} $都可以与当前的实验限制一样大。特别感兴趣的是$ {\ cal a} _ {cp} $ for $ {\ overline b} \ to x_ {s+d}γ$，预计在标准模型（SM）中将有效地为零。对于可观察到的全部Belle II数据，估计$ 2.5 \％$或更多，将为SM以外的物理学提供5σ$的证据。我们在3HDM中显示了可能的明确信号的参数空间。
Direct CP asymmetries (${\cal A}_{CP}$) in the inclusive decays of ${\overline B}\to X_sγ$ and ${\overline B}\to X_{s+d}γ$ of the order of $1\%$ will be probed at the BELLE II experiment. In this work, three such asymmetries are studied in the context of a three-Higgs-doublet model (3HDM), and it is shown that all three ${\cal A}_{CP}$ can be as large as the current experimental limits. Of particular interest is ${\cal A}_{CP}$ for ${\overline B}\to X_{s+d}γ$, which is predicted to be effectively zero in the Standard Model (SM). A measurement of $2.5\%$ or more for this observable with the full BELLE II data would give $5σ$ evidence for physics beyond the SM. We display parameter space in the 3HDM for which such a clear signal is possible.
