论文标题
I（2+1）HDM中的$ Z_3 $软破坏及其目前的探测器
The $Z_3$ soft breaking in the I(2+1)HDM and its probes at present and future colliders
论文作者
论文摘要
$ Z_3 $对称3-Higgs DoubleT型号（3HDM），带有两个惰性双线和一个主动Doublet（扮演Higgs Doublet的作用），即所谓的I（2+1）HDM。当人们允许使用$ z_3 $软性破坏项时，我们讨论了这一3HDM实现的行为。这样的对称性使以“ Hermaphrodite DM”的形式存在两个组分的暗物质（DM）场景，其中两个惰性候选者具有相反的CP平价，并受到这种离散对称性的保护，从衰减到标准模型（SM）颗粒中。此外，这两个DM状态可能彼此区分，因为它们不能集成到具有不同的质量和规格耦合的复杂场中。考虑到这一点，我们研究了具有独特形状的差分光谱，从中可以很容易地推断出两个不同的DM组分分布。我们证明，通过$ q \ bar {q} \至2l+h_1h_1 $和$ q \ bar {q} \ to 2l+a_1a_1 $ processes以及将来通过$ e^{+e^{+e^e^e^e^e^2l+h_1 $ e^{+} e^{ - } \至2L+a_1a_1 $ channels，其中$ l = e，μ$。
A $ Z_3 $ symmetric 3-Higgs Doublet Model (3HDM) with two inert doublets and one active doublet (that plays the role of the Higgs doublet), the so-called I(2+1)HDM, is studied. We discuss the behaviour of this 3HDM realisation when one allows for a $ Z_3 $ soft breaking term. Such a symmetry enables the presence of a two-component Dark Matter (DM) scenario in the form of "Hermaphrodite DM", where the two inert candidates have opposite CP parity and are protected by this discrete symmetry from decaying into Standard Model (SM) particles. Furthermore, the two DM states are potentially distinguishable from each other as they cannot be subsumed into a complex field, having different masses and gauge couplings. With this in mind, we study differential spectra with a distinctive shape from which the existence of two different DM component distributions could be easily inferred. We prove this to be possible at the Large Hadron Collider (LHC) via the $q\bar{q} \to 2l+H_1H_1$ and $q\bar{q} \to 2l+A_1A_1$ processes as well as at a future electron-positron machine via the $e^{+}e^{-} \to 2l+H_1H_1$ and $e^{+}e^{-} \to 2l+A_1A_1$ channels, where $l=e,μ$.
