Search for a heavy resonance decaying to a top quark and a W boson at $$ \sqrt{s} $$ = 13 TeV in the fully hadronic final state
Search for a heavy resonance decaying to a top quark and a W boson at $$ \sqrt{s} $$ = 13 TeV in the fully hadronic final state
复制标题
在完全强子最终状态下，在 $$ sqrt{s} $$ = 13 TeV 处搜索衰减为顶夸克和 W 玻色子的重共振
DOI：
10.1007/jhep12(2021)106
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发表时间：
2021
影响因子：
5.4
通讯作者：
Lechner, L.
中科院分区：
文献类型：
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作者：
Sirunyan, A. M.;Tumasyan, A.;Adam, W.;Bergauer, T.;Dragicevic, M.;Escalante Del Valle, A.;Frühwirth, R.;Jeitler, M.;Krammer, N.;Lechner, L.
研究了在全强子末态中衰变为顶夸克和W玻色子的重共振。分析使用的数据来自质心能量为13 TeV的质子-质子碰撞，对应于LHC CMS实验记录的137 fb− 1的积分光度。搜索的重点是重共振，其中每个顶夸克或W玻色子的衰变产物预计将被重建为具有不同子结构的单个大半径喷流。激发底夸克B* 的产生被用作设定重共振衰减到顶夸克和W玻色子的截面极限的基准。假设B* 夸克的左手，右手，矢量类手征被排除在95%的置信水平，质量低于2.6，2.8，和3.1 TeV，分别。这是迄今为止对B* 夸克质量最严格的限制，将以前的最佳限制扩大了近两倍。
A search for a heavy resonance decaying to a top quark and a W boson in the fully hadronic final state is presented. The analysis is performed using data from proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 137 fb− 1 recorded by the CMS experiment at the LHC. The search is focused on heavy resonances, where the decay products of each top quark or W boson are expected to be reconstructed as a single, large-radius jet with a distinct substructure. The production of an excited bottom quark, b*, is used as a benchmark when setting limits on the cross section for a heavy resonance decaying to a top quark and a W boson. The hypotheses of b* quarks with left-handed, right-handed, and vector-like chiralities are excluded at 95% confidence level for masses below 2.6, 2.8, and 3.1 TeV, respectively. These are the most stringent limits on the b* quark mass to date, extending the previous best limits by almost a factor of two.