论文标题
在proton-proton碰撞中的B标签Dijet质谱中搜索狭窄的共振，$ \ sqrt {s} $ = 13 TEV
Search for narrow resonances in the b-tagged dijet mass spectrum in proton-proton collisions at $\sqrt{s}$ = 13 TeV
论文作者
论文摘要
搜索搜索狭窄的谐振到两个喷气机的最终状态，其中至少一个来自b夸克的喷射在$ \ sqrt {s} $ = 13 tev的质子 - 普罗顿碰撞中。数据集对应于LHC上使用CMS检测器收集的138 Fb $^{ - 1} $的集成光度。源自能量B哈德子的喷射是通过使用深神经网络或射流内的MUON存在的B标记算法来识别的。喷气对的不变质谱是通过平滑的参数化很好地描述的，没有观察到新颗粒的产生证据。生产横截面上的上限设置为激发B夸克和其他共鸣，这些共振腐烂到包含B夸克的Dijet最终状态。这些限制在Z'BOSON的95％置信水平模型中排除了质量为1.8至2.4 TEV的质量和质量为1.8至4.0 TEV的激发B夸克。这是迄今为止激发的B夸克最严格的排除。
A search is performed for narrow resonances decaying to final states of two jets, with at least one jet originating from a b quark, in proton-proton collisions at $\sqrt{s}$ = 13 TeV. The data set corresponds to an integrated luminosity of 138 fb$^{-1}$ collected with the CMS detector at the LHC. Jets originating from energetic b hadrons are identified through a b-tagging algorithm that utilizes a deep neural network or the presence of a muon inside a jet. The invariant mass spectrum of jet pairs is well described by a smooth parametrization and no evidence for the production of new particles is observed. Upper limits on the production cross section are set for excited b quarks and other resonances decaying to dijet final states containing b quarks. These limits exclude at 95% confidence level models of Z' bosons with masses from 1.8 to 2.4 TeV and of excited b quarks with masses from 1.8 to 4.0 TeV. This is the most stringent exclusion of excited b quarks to date.
