论文标题
在以II型为主导的左右SEESAW模型中的瘦素发生和低能CP违反
Leptogenesis and low-energy CP violation in a type-II-dominated left-right seesaw model
论文作者
论文摘要
我们认为在左右对称的SEESAW场景中，中微子质量产生和瘦素发生由II型SEESAW术语主导。我们以大统一的启发，假设中微子狄拉克质量基质是由顶级质量质量的单一条目主导的，这使Lepton混合基质的低能阶段是CP违规的唯一来源。在三重态标量主要衰减到瘦素的制度中，这导致了基于最少数量参数的预测情况。我们对修订后的密度矩阵框架内的风味玻尔兹曼方程进行了详细的分析，并证明在此简单模型中可以成功生成观察到的Baryon不对称性。我们指出，风味效应的重要性是有限的，我们讨论了对低能观测值（例如Dirac CP阶段和中微子双β衰减）的影响。
We consider leptogenesis in a left-right-symmetric seesaw scenario in which neutrino mass generation and leptogenesis are dominated by the type-II seesaw term. Motivated by grand unification, we assume that the neutrino Dirac mass matrix is dominated by a single entry of the order of the top-quark mass, which leaves the low-energy phases of the lepton mixing matrix as the only sources of CP violation. Working in a regime where the triplet scalar predominantly decays into leptons, this results in a predictive scenario based on a minimal number of parameters. We perform a detailed analysis of the flavored Boltzmann equations within a revised density matrix framework and demonstrate that the observed baryon asymmetry can be successfully generated in this simple model. We point out that the significance of flavor effects is limited, and we discuss the implications for low-energy observables such as the Dirac CP phase and neutrinoless double beta decay.
