arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2302.12698hep-ph
收藏

动力学混合与门户物质III:关联门户物质与右手中微子质量

Towards UV-Models of Kinetic Mixing and Portal Matter III: Relating Portal Matter and R-H Neutrino Masses

Thomas G. Rizzo

AI总结:

本文通过将SM规范群扩展为左右对称模型,利用共同的真空期望值将暗规范群破缺、门户物质质量标度与RH中微子及重规范玻色子联系起来,揭示了可见与暗部耦合现象学间的相互作用。

摘要:

暗光子(DP)与标准模型(SM)中熟悉的那个光子的动力学混合(KM)需要存在一组新的场,称为门户物质(PM),它们同时携带SM和暗部量子数,其中一些的质量可能位于TeV尺度。在香草KM模型中,暗规范群仅为描述DP所需的简单群$G_{Dark}=U(1)_D$,而SM规范相互作用由通常的$G_{SM}=SU(3)_c\ imes SU(2)_L\ imes U(1)_Y$描述。然而,我们需要超越这个简单模型,以更好地理解$G_{SM}$与$G_{Dark}$之间的相互作用,特别是确定它们如何可能共同融入一个更统一的构造中。继我们之前的分析,这通常要求将$G_{Dark}$扩展为一个非阿贝尔群,例如$SU(2)_I\ imes U(1)_{Y_I}$,在其下PM和SM场均可非平庸地变换。在本文中,同样受我们早期自上而下模型的启发,我们考虑将SM规范群扩展为左右对称模型(LRM)的规范群,并由此通过共同的真空期望值,将$G_{Dark}\ o U(1)_D$破缺相关的质量标度以及PM场,与RH中微子以及LRM重规范玻色子的质量标度联系起来。这导致可见与暗部现已耦合的现象学之间产生有趣的相互作用,其中至少部分可能被例如LHC和/或未来的FCC-hh探测到。

英文摘要:

The kinetic mixing (KM) of a dark photon (DP) with the familiar one of the Standard Model (SM) requires the existence of a new set of fields, called portal matter (PM), which carry both SM and dark sector quantum numbers, some whose masses may lie at the TeV scale. In the vanilla KM model, the dark gauge group is just the simple $G_{Dark}=U(1)_D$ needed to describe the DP while the SM gauge interactions are described by the usual $G_{SM}=SU(3)_c\times SU(2)_L\times U(1)_Y$. However, we need to go beyond this simple model to gain a better understanding of the interplay between $G_{SM}$ and $G_{Dark}$ and, in particular, determine how they both might fit into a more unified construction. Following our previous analyses, this generally requires $G_{Dark}$ to be extended to a non-abelian group, \eg, $SU(2)_I\times U(1)_{Y_I}$, under which both the PM and SM fields may transform non-trivially. In this paper, also inspired by our earlier work on top-down models, we consider extending the SM gauge group to that of the Left-Right Symmetric Model (LRM) and, in doing so, through common vacuum expectation values, link the mass scales associated with the breaking of $G_{Dark}\to U(1)_D$ and the PM fields to that of the RH-neutrino as well as the heavy gauge bosons of the LRM. This leads to an interesting interplay between the now coupled phenomenologies of both visible and dark sectors at least some of which may be probed at, \eg, the LHC and/or at the future FCC-hh.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑