论文标题
用位移的顶点扳机探测自然轻单曲线
Probing naturally light singlets with a displaced vertex trigger
论文作者
论文摘要
我们依赖于CMS II期轨道触发器，研究了高质量，HADRONIC位移顶点的专用触发器的物理案例。我们通过简化CMS轨道触发器的模拟来估算触发效率，并表明可以以最小的削减组将L1触发率从假顶点，B中腐腐烂和与探测器材料的辅助相互作用的速率降低到KHz水平。尽管毫无疑问，实施这是一个严重的实验挑战，但我们得出的结论是，流离失所的顶点扳机可以为异国情调的希格斯衰减，异国情调B衰变，甚至直接产生光共振的新参数空间打开新的参数空间。我们将物理潜力与单线标量与标准模型Higgs和具有耦合的轴向粒子混合在一起，并审查由层次结构和强大的CP问题，暗物质和baryogeness的数字或相关模型。
We investigate the physics case for a dedicated trigger on a low mass, hadronic displaced vertex at the high luminosity LHC, relying on the CMS phase II track trigger. We estimate the trigger efficiency with a simplified simulation of the CMS track trigger and show that the L1 trigger rate from fake vertices, B meson decays and secondary interactions with the detector material can likely be brought down to the kHz level with a minimal set of cuts. While it would with any doubt be a severe experimental challenge to implement, we conclude that a displaced vertex trigger could open qualitatively new parameter space for exotic Higgs decays, exotic B decays and even direct production of light resonances. We parametrize the physics potential in terms of a singlet scalar mixing with the Standard Model Higgs and an axion-like particle with a coupling to gluons, and review a number or relevant models motivated by the hierarchy and strong CP problems, dark matter and baryogenesis.
