Search for heavy particles in the b -tagged dijet mass distribution with additional b -tagged jets in proton-proton collisions at s = 13 TeV with the ATLAS experiment
Search for heavy particles in the b -tagged dijet mass distribution with additional b -tagged jets in proton-proton collisions at s = 13 TeV with the ATLAS experiment
复制标题
通过 ATLAS 实验，在 s = 13 TeV 的质子-质子碰撞中使用额外的 b 标记射流在 b 标记的双射流质量分布中搜索重粒子
DOI：
10.1103/physrevd.105.012001
复制
发表时间：
2022
影响因子：
5
通讯作者：
Aad G
中科院分区：
文献类型：
--
作者：
Aad G
本文报道了一种寻找新的衰变为二夸克的重粒子和与加夸克有关的重粒子的优化方法。除了两个最高射流之外，通过标记至少一个较低射流来提高灵敏度。在这次搜索中使用的数据对应于在2017年和2018 TeV质子-质子碰撞运行期间与LHC的ATLAS探测器一起使用专用的trijet触发器收集的103的综合光度。搜索寻找共振峰的标记dijet不变质谱在平稳下降的背景。背景估计与创新的数据驱动的方法的基础上正交函数。标记的双喷射不变量质谱与仅背景假设是相容的。在95%的置信水平上的一个重矢量玻色子产生截面倍分支比的一对夸克的上限。
A search optimized for new heavy particles decaying to two-quarks and produced in association with additional-quarks is reported. The sensitivity is improved by-tagging at least one lower-jet in addition to the two highest-jets. The data used in this search correspond to an integrated luminosity of 103collected with a dedicated trijet trigger during the 2017 and 2018TeV proton-proton collision runs with the ATLAS detector at the LHC. The search looks for resonant peaks in the-tagged dijet invariant mass spectrum over a smoothly falling background. The background is estimated with an innovative data-driven method based on orthonormal functions. The observed-tagged dijet invariant mass spectrum is compatible with the background-only hypothesis. Upper limits at 95% confidence level on a heavy vector-boson production cross section times branching ratio to a pair of-quarks are derived.