论文标题
典型的Seesaw对两部分暗物质的影响
Canonical seesaw implication for two-component dark matter
论文作者
论文摘要
我们表明，由$ u（1）_ {b-l} $ gauge对称性实现的规范seesaw机制自然提供了两个组件的暗物质。打破$ b-l $的SEESAW量表将残留量规对称性定义为$ z_6 = z_2 \ otimes z_3 $，其中$ z_2 $导致了通常的物质均等，而$ z_3 $是新认识的，非定位地转换了夸克字段。尽管$ Z_3 $暗物质可能比Light Quarks $ u，D $更重，但暗物质组成部分 - 分别在均等和$ z_3 $下进行非凡转换和$ z_3 $。 This dark matter setup can address the XENON1T anomaly recently observed and other observables, given that the dark matter masses are nearly degenerate, heavier than the electron and the $B-L$ gauge boson $Z'$, as well as the fast-moving $Z_3$ dark matter has a large $B-L$ charge, while the $Z'$ is viably below the beam dump experiment sensitive regime.
We show that the canonical seesaw mechanism implemented by the $U(1)_{B-L}$ gauge symmetry provides two-component dark matter naturally. The seesaw scale that breaks $B-L$ defines a residual gauge symmetry to be $Z_6=Z_2\otimes Z_3$, where $Z_2$ leads to the usual matter parity, while $Z_3$ is newly recognized, transforming quark fields nontrivially. The dark matter components -- that transform nontrivially under the matter parity and $Z_3$, respectively -- can gain arbitrary masses, despite the fact that the $Z_3$ dark matter may be heavier than the light quarks $u,d$. This dark matter setup can address the XENON1T anomaly recently observed and other observables, given that the dark matter masses are nearly degenerate, heavier than the electron and the $B-L$ gauge boson $Z'$, as well as the fast-moving $Z_3$ dark matter has a large $B-L$ charge, while the $Z'$ is viably below the beam dump experiment sensitive regime.
