Search for W′ bosons decaying to a top and a bottom quark at s=13TeV in the hadronic final state
Search for W′ bosons decaying to a top and a bottom quark at s=13TeV in the hadronic final state
复制标题
寻找在强子终态 s=13TeV 处衰变至顶夸克和底夸克的 W−玻色子
DOI：
10.1016/j.physletb.2021.136535
复制
发表时间：
2021
影响因子：
4.4
通讯作者：
Jeitler, M.
中科院分区：
文献类型：
--
作者：
Sirunyan, A.M.;Tumasyan, A.;Adam, W.;Andrejkovic, J.W.;Bergauer, T.;Chatterjee, S.;Dragicevic, M.;Escalante Del Valle, A.;Frühwirth, R.;Jeitler, M.
在质心能量为 13 TeV 的质子-质子碰撞中，对衰变到全强子最终状态的顶夸克和底夸克的 W' 玻色子进行了搜索。分析数据是 CMS 实验在 2016 年至 2018 年间收集的，对应的积分光度为 137 fb−1。当来自顶夸克的 W 玻色子强子衰变时，使用深度神经网络算法来识别由底夸克发起的喷流和包含顶夸克衰变产物的喷流。没有观察到超出估计的标准模型背景的量。设置了衰变到顶夸克和底夸克的 W' 玻色子产生截面的上限。质量低于 3.4 TeV 的左旋和右旋 W' 玻色子均以 95% 的置信水平被排除，并获得了迄今为止对 W' 玻色子在全强子最终态衰变到顶夸克和底夸克的最严格限制。
A search is performed for W′ bosons decaying to a top and a bottom quark in the all-hadronic final state, in proton-proton collisions at a center-of-mass energy of 13 TeV. The analyzed data were collected by the CMS experiment between 2016 and 2018 and correspond to an integrated luminosity of 137 fb− 1. Deep neural network algorithms are used to identify the jet initiated by the bottom quark and the jet containing the decay products of the top quark when the W boson from the top quark decays hadronically. No excess above the estimated standard model background is observed. Upper limits on the production cross sections of W′ bosons decaying to a top and a bottom quark are set. Both left-and right-handed W′ bosons with masses below 3.4 TeV are excluded at 95% confidence level, and the most stringent limits to date on W′ bosons decaying to a top and a bottom quark in the all-hadronic final state are obtained.