论文标题
在$ \ sqrt {s} = $ 13 TEV中，搜索在质子 - 普罗顿碰撞中衰减的高质量共振和洛伦兹增强的共鸣
Search for high-mass resonances decaying to a jet and a Lorentz-boosted resonance in proton-proton collisions at $\sqrt{s} =$ 13 TeV
论文作者
论文摘要
据报道，搜索了高质量的HADRONED共振，这些共振会给Parton和洛伦兹增强的共振衰减，从而又衰减了一对partons。该搜索基于在proton-proton碰撞中使用CMS检测器收集的数据，$ \ sqrt {s} = $ 13 TEV，对应于138 fb $^{ - 1} $的集成光度。增强的共振被重建为单个宽喷气机，其子结构与两体衰减一致。因此，高质量共振被认为是二重系统。开发级联共振衰减的喷气子结构信息和运动学特性，以使信号与大量子染色体动力学多吉特背景相关。分析了Dijet质谱，以存在新的高质量共振，并发现与标准模型背景预测一致。结果是在扭曲的额外维度模型中解释的，其中高质量共振是Kaluza-Klein Gluon，增强的共振是辐射，而最终的状态部分都是Gluons。生产横截面的限制是Kaluza-Klein Gluon和Radion块的函数。这些限制在95％的置信度模型中排除了Kaluza-Klein Gluon质量在2.0至4.3 TEV范围内，范围为0.20至0.74 TEV。通过探索新的实验签名，与以前的搜索相比，观察到的Kaluza-Klein Gluon质量的限制可扩展到大约1个TEV。
A search is reported for high-mass hadronic resonances that decay to a parton and a Lorentz-boosted resonance, which in turn decays into a pair of partons. The search is based on data collected with the CMS detector at the LHC in proton-proton collisions at $\sqrt{s} =$ 13 TeV, corresponding to an integrated luminosity of 138 fb$^{-1}$. The boosted resonance is reconstructed as a single wide jet with substructure consistent with a two-body decay. The high-mass resonance is thus considered as a dijet system. The jet substructure information and the kinematic properties of cascade resonance decays are exploited to disentangle the signal from the large quantum chromodynamics multijet background. The dijet mass spectrum is analyzed for the presence of new high-mass resonances, and is found to be consistent with the standard model background predictions. Results are interpreted in a warped extra dimension model where the high-mass resonance is a Kaluza-Klein gluon, the boosted resonance is a radion, and the final state partons are all gluons. Limits on the production cross section are set as a function of the Kaluza-Klein gluon and radion masses. These limits exclude at 95% confidence level models with Kaluza-Klein gluon masses in the range from 2.0 to 4.3 TeV and radion masses in the range from 0.20 to 0.74 TeV. By exploring a novel experimental signature, the observed limits on the Kaluza-Klein gluon mass are extended by up to about 1 TeV compared to previous searches.
