论文标题
深色希格斯暗物质
Dark Higgs Dark Matter
论文作者
论文摘要
一个新的$ U（1）$暗规组通过动力学混合门户与标准型号（SM）结合使用，以Higgs Field的形式提供了自然的暗物质候选，$ H_D $，负责产生大量的深色光子，$γ_D$。我们表明条件$ m_ {h_d} \ leq m_ {γ_d} $，以及动力学混合参数的较小度，$ε$，和/或暗规耦合，$ g_d $，导致黑暗的希格格斯足以构成黑暗的黑物质。我们分析了宇宙的热历史，并表明两者都冻结，$ {\ rm sm} \ to \ {γ_d，h_d \} $和冻结，$ \ {γ_d，h_d \} \ \ h_d \} \ \ $ 10^{ - 13} \Lessimε\ Lessim10^{ - 6} $。天体物理学和宇宙学中可观察的信号包括对原始元素丰度的修改，超新星爆炸的能量改变，深色希格斯在晚期宇宙中衰落以及暗物质自我互动。
A new $U(1)$ dark gauge group coupled to the Standard Model (SM) via the kinetic mixing portal provides a natural dark matter candidate in the form of the Higgs field, $h_d$, responsible for generating the mass of the dark photon, $γ_d$. We show that the condition $m_{h_d}\leq m_{γ_d}$, together with smallness of the kinetic mixing parameter, $ε$, and/or dark gauge coupling, $g_d$, leads the dark Higgs to be sufficiently metastable to constitute dark matter. We analyze the Universe's thermal history and show that both freeze-in, ${\rm SM}\to \{γ_d, h_d\}$, and freeze-out, $ \{γ_d, h_d\} \to {\rm SM}$, processes can lead to viable dark Higgs dark matter with a sub-GeV mass and a kinetic mixing parameter in the range $10^{-13}\lesssimε\lesssim10^{-6}$. Observable signals in astrophysics and cosmology include modifications to primordial elemental abundances, altered energetics of supernovae explosions, dark Higgs decays in the late Universe, and dark matter self-interactions.
