论文标题
破坏镜子双颜色
Breaking Mirror Twin Color
论文作者
论文摘要
我们研究了镜子双Higgs模型的简单扩展，其中双色尺度对称性和离散的$ z_2 $镜像对称性自发损坏。这是通过引入单个新的彩色三重态，六重点或八位位标量表及其双胞胎以及合适的标量电势来完成的。这种自发的$ z_2 $破裂允许在现象学上可行的电子真空对齐，并导致可见光和镜面扇区之间在低能，颜色限制尺度和粒子光谱上的残留量规对称性方面存在巨大差异。特别是，我们的几种模型具有残余$ SU（2）$或$ SO（3）$ Twin Color Gauge对称性，与$λ_ {\ rm QCD} $相比，具有非常低的限制量表。此外，彩色标量与物质之间的耦合提供了双纤维质量的新动态源，并且由于镜像对称性，这些导致了各种相关的可见扇区效应，可以通过精确测量和碰撞器搜索来探测，这些扇区效应。
We investigate simple extensions of the Mirror Twin Higgs model in which the twin color gauge symmetry and the discrete $Z_2$ mirror symmetry are spontaneously broken. This is accomplished in a minimal way by introducing a single new colored triplet, sextet, or octet scalar field and its twin along with a suitable scalar potential. This spontaneous $Z_2$ breaking allows for a phenomenologically viable alignment of the electroweak vacuum, and leads to dramatic differences between the visible and mirror sectors with regard to the residual gauge symmetries at low energies, color confinement scales, and particle spectra. In particular, several of our models feature a remnant $SU(2)$ or $SO(3)$ twin color gauge symmetry with a very low confinement scale in comparison to $Λ_{\rm QCD}$. Furthermore, couplings between the colored scalar and matter provide a new dynamical source of twin fermion masses, and due to the mirror symmetry, these lead to a variety of correlated visible sector effects that can be probed through precision measurements and collider searches.
