arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1606.01258hep-phastro-ph.CO
收藏

暗物质I的无菌中微子入口:$U(1)_{B-L}$案例

Sterile neutrino portal to Dark Matter I: The $U(1)_{B-L}$ case

Miguel Escudero, Nuria Rius, Verónica Sanz

摘要:

在本文中,我们探讨了宇宙中的不育中微子和暗物质部门有一个共同起源的可能性。我们研究了这种假设的后果,在简单的情况下,耦合的黑暗部门的标准模型通过一个全球性的$U(1)_{B-L}$,打破了自发的暗标量。这个暗标量为暗费米子提供质量,并通过希格斯门耦合与希格斯进行通信。我们发现了一个有趣的相互作用之间的暗物质湮灭暗标量-CP-甚至混合与希格斯粒子和CP-奇数,成为戈德斯通玻色子,马约伦-和重中微子,以及碰撞探测器通过耦合到希格斯粒子。此外,暗物质湮灭成为无菌中微子及其随后的衰变以测量玻色子和夸克,带电轻子或中微子导致间接检测签名,其接近银河系中心和矮星系的伽马射线通量的当前界限。

英文摘要:

In this paper we explore the possibility that the sterile neutrino and Dark Matter sectors in the Universe have a common origin. We study the consequences of this assumption in the simple case of coupling the dark sector to the Standard Model via a global $U(1)_{B-L}$, broken down spontaneously by a dark scalar. This dark scalar provides masses to the dark fermions and communicates with the Higgs via a Higgs portal coupling. We find an interesting interplay between Dark Matter annihilation to dark scalars - the CP-even that mixes with the Higgs and the CP-odd which becomes a Goldstone boson, the Majoron - and heavy neutrinos, as well as collider probes via the coupling to the Higgs. Moreover, Dark Matter annihilation into sterile neutrinos and its subsequent decay to gauge bosons and quarks, charged leptons or neutrinos lead to indirect detection signatures which are close to current bounds on the gamma ray flux from the galactic center and dwarf galaxies.

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。

↑