论文标题
通过异国情调的希格斯（Higgs
Event characterization of dark bosons via exotic Higgs decays with final states of displaced dimuons in high luminosity era of the LHC
论文作者
论文摘要
我们研究了寻找长寿/及时的深色矢量玻色子$ z_d $的潜在范围，也称为Dark $ Z $，以及通过观察到的Higgs Boson $ h $中的异国情调衰减，$ zdz_d $ z_dz_d $，$ H_DH_DH_D $，或$ h_dh_d $ zz_d $ z $ a phuncune bos n phuncune bos by phuncune bos bos by phuch y hig z_dz_d $ h_dz_d $ h_dz_d $ h_dz_d $ higgs $ h_d $。通过Higgs门户的$ Z_D $生产是通过两种机制之一完成的，将$ z_d $与$ z $的动力学混合以及$ h_d $与$ h $的混合。考虑了$ h $的所有生产模式，而分支分数是使用{\ textsc {madgraph5}} \ _ amc@nlo v2.7.2 Framework在蒙特卡洛模拟中计算的。我们专注于多个二元组的最终状态，最多位于\ mbox {7500 mm}中，可以使用来自ATLAS和CMS探测器的数据在运行〜3中收集的数据，而无需顶点约束，可以重建MUON。用于运行〜2，运行〜3和高光度运行（HL-LHC）的137、300和3000 fb $^{ - 1} $的集成亮度分别用于估算每个衰减模式的大型HADRON碰撞器的预期搜索灵敏度。
We investigate the potential reach of a search for a long-lived/prompt dark vector boson $Z_D$, also called dark $Z$, and a prompt dark Higgs boson $h_D$ through exotic decays of the observed Higgs boson $h$ into either $Z_DZ_D$, $h_Dh_D$, or $ZZ_D$ with $Z$ being the hypercharge gauge boson. The $Z_D$ production through the Higgs portal is completed via one of two mechanisms, kinetic mixing of $Z_D$ with $Z$ and the mixing of $h_D$ with $h$. All production modes of $h$ are considered, while the branching fractions are calculated in Monte Carlo simulation using the {\textsc{MadGraph5}}\_aMC@NLO v2.7.2 framework. We focus on a final state of multiple dimuons, displaced up to \mbox{7500 mm}, where the muons can be reconstructed without vertex constraint using data from ATLAS and CMS detectors to be collected in Run~3. Integrated luminosities of 137, 300, and 3000 fb$^{-1}$ for Run~2, Run~3, and high luminosity run (HL-LHC), respectively, are used for estimating the expected search sensitivity of the Large Hadron Collider to each of the decay modes.
