论文标题

动力学混合,深色希格斯三胞胎,$ m_w $等等

Kinetic Mixing, Dark Higgs Triplets, $M_W$ and All That

论文作者

Rizzo, Thomas G.

论文摘要

动力学混合(km)门户是一种流行的机制,它允许在$ \ sim 1 $ gev的质量范围内允许轻度暗物质(DM)通过热方法实现观察到的遗物密度,并且只能由几个参数(例如$ε$)有效地描述。在最简单的设置中,标准型号(SM)$ u(1)_y $ $ hypharge量规玻色子和$ u(1)_d $ dark Photon(dp),它们只能与黑暗部门的字段相连,通过门户(PM)领域(PM)的循环(在SM和Dark Chargge中都产生了一个小的COUP MATCE PLAINS COUPLATE和DEAMP MATED(DM),通过门户(PM)的循环(PM)体验km(PM)。但是,如果一个人希望以更深入的方式理解这个想法背后的基本物理,我们需要向上迈出一步更加完整的图片。同时,CDFII测量了$ W $ -Boson质量的价值,该质量大大高于SM预期。 In this paper we speculate that this shift in the $W$'s mass may be related to the $\sim 1$ GeV mass of the DP within a framework of scalar PM that leads to phenomenologically interesting values of $ε$ via non-abelian KM due to the existence of an $SU(2)_L$, $Y=0$, {\it complex} Higgs triplet which carries a non-zero value of the $ u(1)_d $ dark Charge。可能会检查可能出现在LHC和其他地方的这种情况的可能的量规玻色孔加上缺少的能量特征。确实,有了适度的假设,所有新的标量PM状态都被预计将其质量低于$ \ simeq 630 $ gev,因此至少应该在运动学上可以访问。 HL-LHC很可能能够探索所有此模型的允许参数空间。

The kinetic mixing (KM) portal is a popular mechanism which allows light dark matter (DM) in the mass range below $\sim 1$ GeV to achieve the observed relic density by thermal means and can be effectively described by only a few parameters, e.g., $ε$, the strength of this KM. In the simplest setup, the Standard Model (SM) $U(1)_Y$ hypercharge gauge boson and a $U(1)_D$ dark photon (DP), which only couples to fields in the dark sector, experience KM via loops of portal matter (PM) fields which have both SM and dark charges thus generating a small coupling between us and dark matter (DM). However, if one wishes to understand the underlying physics behind this idea in a deeper fashion we need to take a step upward to a more UV-complete picture. Meanwhile, CDFII has measured a value for the $W$-boson mass which lies significantly above SM expectations. In this paper we speculate that this shift in the $W$'s mass may be related to the $\sim 1$ GeV mass of the DP within a framework of scalar PM that leads to phenomenologically interesting values of $ε$ via non-abelian KM due to the existence of an $SU(2)_L$, $Y=0$, {\it complex} Higgs triplet which carries a non-zero value of the $U(1)_D$ dark charge. Possible gauge boson plus missing energy signatures of this scenario that can appear at the LHC and elsewhere are examined. Indeed, with modest assumptions, all of the new scalar PM states are predicted to have masses below roughly $\simeq 630$ GeV and so should be at least kinematically accessible. The HL-LHC will very likely to be able to explore all of this model's allowed parameter space.

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