论文标题
搜索与$ \ sqrt {s} $ = 13 tev的pp碰撞中的充满活力的光子相关的暗物质
Search for dark matter in association with an energetic photon in pp collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
论文作者
论文摘要
搜索暗物质是在最终状态中进行的，该状态包含光子$ \ sqrt {s} $ = 13 tev中的质子$ - $质子碰撞中缺少横向动量。 CERN LHC的Atlas实验在2015年$ - $ 2018收集的数据对应于139 fb $^{ - 1} $的集成发光度。没有观察到与标准模型的预测的偏差，并且在可见的横截面上设置了2.45 fb和0.5 fb之间的95％置信度上限，以在缺失的横向动量的不同范围内从标准模型以外的物理贡献中进行贡献。在模型中，结果被解释为95％的置信度限制，在模型中，通过S通道轴向矢量或矢量介体配对生产弱相互作用的候选者。对于轴向矢量（载体）介体的质量最高为415（580）GEV的质量的深色候选者被排除在外，而介体的最大排除质量为1460（1470）GEV。此外，结果以95％的置信度限制在模型的参数上表示，该模型的参数与光子相关，并用于将轴突样粒子的$ g_ {azγ} $限制为轴向粒子的耦合$ g_ {azγ} $。
A search for dark matter is conducted in final states containing a photon and missing transverse momentum in proton$-$proton collisions at $\sqrt{s}$ = 13 TeV. The data, collected during 2015$-$2018 by the ATLAS experiment at the CERN LHC, correspond to an integrated luminosity of 139 fb$^{-1}$. No deviations from the predictions of the Standard Model are observed and 95% confidence-level upper limits between 2.45 fb and 0.5 fb are set on the visible cross section for contributions from physics beyond the Standard Model, in different ranges of the missing transverse momentum. The results are interpreted as 95% confidence-level limits in models where weakly interacting dark-matter candidates are pair-produced via an s-channel axial-vector or vector mediator. Dark-matter candidates with masses up to 415 (580) GeV are excluded for axial-vector (vector) mediators, while the maximum excluded mass of the mediator is 1460 (1470) GeV. In addition, the results are expressed in terms of 95% confidence-level limits on the parameters of a model with an axion-like particle produced in association with a photon, and are used to constrain the coupling $g_{aZγ}$ of an axion-like particle to the electroweak gauge bosons.
