论文标题
优化较短寿命的像素轨道搜索
Optimizing pixel tracklet searches for shorter lifetimes
论文作者
论文摘要
在LHC分析中，在LHC分析中，在LHC分析中搜索LHC的LHC候选者的一项有前途的技术被证明是一种有前途的技术，该曲目的消失轨迹是一种有前途的技术。但是，可以说是最有趣的可能性，寿命较短，因此在这种情况下，现有的曲目搜索较不敏感。我们通过仅需要三个像素命中来进行曲目重建，并要求随附的软轨道以抑制背景，从而评估了针对较短寿命的田径搜索的性能。我们估计，通过此优化搜索，现有搜索的灵敏度可以扩展到参数空间区域。
Pixel tracklets, disappearing tracks reconstructed with only pixel hits, have proven to be a promising technique in LHC analyses to search for dark matter candidates at the LHC that belong to a nearly-degenerate electroweak multiplet. However, a Pseudo-Dirac electroweak doublet fermion, arguably the most interesting such possibility, has a shorter lifetime and therefore existing tracklet searches are less sensitive in this case. We assess the performance of a tracklet search optimized for shorter lifetimes by requiring only three pixel hits for the tracklet reconstruction, and by demanding an accompanying soft track for suppressing backgrounds. We estimate how far the sensitivity of existing searches can be extended into the region of parameter space with this optimized search.
