Department of Physics, University of California, Santa Barbara, California 93106, USA.
Phys Rev Lett. 2012 Jun 1;108(22):221301. doi: 10.1103/PhysRevLett.108.221301. Epub 2012 May 29.
We address the possibility that CP violation in B(s)-B(s) mixing may help explain the origin of the cosmic baryon asymmetry. We propose a new baryogenesis mechanism--"electroweak beautygenesis"--explicitly showing that these two CP-violating phenomena can be sourced by a common CP phase. As an illustration, we work in the two-Higgs-doublet model. Because the relevant CP phase is flavor off diagonal, this mechanism is less severely constrained by null results of electric dipole moment searches than other scenarios. We show how measurements of flavor observables by the D0, CDF, and LHCb collaborations test this scenario.
我们探讨了 B(s)-B(s) 混合中的 CP 破坏是否有助于解释宇宙重子不对称性的起源。我们提出了一种新的成核机制——“电弱 Beauty 成核”——明确表明这两个 CP 破坏现象可以由一个共同的 CP 相产生。作为一个说明，我们在双希格斯二重态模型中进行工作。由于相关 CP 相是味对角外的，因此与其他情形相比，电偶极矩搜索的零结果对该机制的约束较小。我们展示了 D0、CDF 和 LHCb 合作组如何通过测量味可观测量来检验这一情形。
