arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1506.06131hep-phhep-exhep-th
收藏

重子数作为第四种颜色

Baryon Number as the Fourth Color

Bartosz Fornal, Arvind Rajaraman, Tim M. P. Tait

摘要:

本文提出了一个推广的标准模型,其中重子数被提升为高能非阿贝尔规范对称性的一部分。特别地,我们考虑规范群SU(4)x SU(2)_L x U(1)_X,其中SU(4)统一了重子数和色。这种对称性自发地被分解为标准模型规范群,其尺度可以低至几TeV。SU(4)结构意味着每个SM夸克都伴随着一个无色夸克伙伴,其中最轻的夸克由广义重子数对称性稳定,可以扮演暗物质的角色。我们探讨的情况下,人们可以实现一个模型的不对称暗物质的遗迹丰度连接到观察到的重子不对称性,并讨论了独特的签名,可以在大型强子对撞机搜索。

英文摘要:

We propose an extension of the Standard Model in which baryon number is promoted to be part of a non-Abelian gauge symmetry at high energies. Specifically, we consider the gauge group SU(4) x SU(2)_L x U(1)_X, where the SU(4) unifies baryon number and color. This symmetry is spontaneously broken down to the Standard Model gauge group at a scale which can be as low as a few TeV. The SU(4) structure implies that each SM quark comes along with an uncolored quark partner, the lightest of which is stabilized by the generalized baryon number symmetry and can play the role of dark matter. We explore circumstances under which one can realize a model of asymmetric dark matter whose relic abundance is connected to the observed baryon asymmetry, and discuss unique signatures that can be searched for at the LHC.

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。

↑