论文标题
在LHC的不同实验处产生和检测长寿命的颗粒
Producing and detecting long-lived particles at different experiments at the LHC
论文作者
论文摘要
我们提出了一种在LHC上寻找长寿命颗粒（LLP）的新策略。 LLP是在一个实验中产生的，但是在另一个实验中检测器检测到其衰减产物。我们将隐藏的山谷场景用作基准。通过淋浴和举起，多种隐藏的介体可能很大，并且本研究中选择的dimuon通常太软，无法通过传统的LHC搜索中传递触发器。我们发现，如果我们在LHCB和Alice实验的碰撞点上产生LLP，并使用Atlas的MUON室进行检测，则可以实现最佳接受。这种新的搜索是具有成本效益的，因为它不需要构建新的检测器。同时，它可以提供有趣的参数空间的覆盖范围，该空间与其他提议的LLP搜索相辅相成。
We propose a new strategy to look for long-lived particles (LLP) at the LHC. The LLPs are produced at one experiment, but its decay products are detected by a detector at another experiment. We use a confining Hidden Valley scenario as a benchmark. Through showering and hadronization, the multiplicity of hidden mesons can be large, and their decay products, dimuon as chosen in this study, are typically too soft to pass triggers in traditional LHC searches. We find the best acceptance is achieved if we produce LLPs at collision points at the LHCb and ALICE experiments, and use the muon chamber of ATLAS for detection. This new search is cost-efficient since it does not require a new detector to be built. Meanwhile, it can provide coverage of interesting parameter space, which is complementary to other proposed LLP searches.
