论文标题
在$τ$ Lepton中搜索新物理学，以及$ \ sqrt {s} $ = 13 TEV的Proton-Proton碰撞中缺少横向动量最终状态
Search for new physics in the $τ$ lepton plus missing transverse momentum final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV
论文作者
论文摘要
在最终状态下以强调腐烂的tau Lepton和中微子的形式搜索物理学以外的物理学。该分析基于CMS实验在LHC处的13 TEV中心能量中的CMS实验记录的数据，对应于138 fb $^{= 1} $的总综合发光度。分析了横向质谱，以分析新物理学的存在。没有观察到与SM预测的显着偏差。在tau Lepton和中微子的W'Boson腐烂的生产横截面上设置了限制。下限设置在连续的SM样重型电荷载体和量子黑洞的质量上。将上限放在新玻色子的耦合上，向SM费米子的耦合。约束在非宇宙量规交互模型和有效的现场理论模型上。首次提出了$ t $ channel leptoquark（LQ）交换的横截面上的上限。这些限制被转化为LQ质量及其在$ t $ channel中的耦合上的排除限制。该分析的敏感性扩展到LQ模型的参数空间，该空间试图解释B Meson衰变中观察到的异常。迄今为止，针对各种解释的限制是最严格的。此外，还提供了独立的限制。
A search for physics beyond the standard model (SM) in the final state with a hadronically decaying tau lepton and a neutrino is presented. This analysis is based on data recorded by the CMS experiment from proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC, corresponding to a total integrated luminosity of 138 fb$^{=1}$. The transverse mass spectrum is analyzed for the presence of new physics. No significant deviation from the SM prediction is observed. Limits are set on the production cross section of a W' boson decaying into a tau lepton and a neutrino. Lower limits are set on the mass of the sequential SM-like heavy charged vector boson and the mass of a quantum black hole. Upper limits are placed on the couplings of a new boson to the SM fermions. Constraints are put on a nonuniversal gauge interaction model and an effective field theory model. For the first time, upper limits on the cross section of $t$-channel leptoquark (LQ) exchange are presented. These limits are translated into exclusion limits on the LQ mass and on its coupling in the $t$-channel. The sensitivity of this analysis extends into the parameter space of LQ models that attempt to explain the anomalies observed in B meson decays. The limits presented for the various interpretations are the most stringent to date. Additionally, a model-independent limit is provided.
