Search for resonant and nonresonant production of pairs of dijet resonances in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV
Search for resonant and nonresonant production of pairs of dijet resonances in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV
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搜索 $$ sqrt{s} $$ = 13 TeV 质子-质子碰撞中双射共振对的共振和非共振产生
DOI：
10.1007/jhep07(2023)161
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发表时间：
2023
影响因子：
5.4
通讯作者：
Jeitler, M.
中科院分区：
文献类型：
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作者：
Tumasyan, A.;Adam, W.;Andrejkovic, J. W.;Bergauer, T.;Chatterjee, S.;Damanakis, K.;Dragicevic, M.;Escalante Del Valle, A.;Hussain, P. S.;Jeitler, M.
在具有至少四个喷流的最终状态中，进行具有相同质量的双喷流共振对的搜索。对于四股喷气生产通过中间共振状态进行的情况和非共振生产的情况，分别给出了结果。搜索使用的数据样本对应于CMS探测器在= 13 TeV的质子-质子碰撞中收集的138 fb− 1的积分光度。在95%置信水平下，报告了四射流和双射流共振的生产横截面上的模型独立极限。这些第一个LHC限制共振对生产的双喷共振通过高质量的中间状态被应用到一个信号模型的双夸克，衰变成对矢量夸克，不包括双夸克质量低于7.6 TeV的一个特定的模型方案。在分布的尾部有两个事件，每个事件具有8 TeV的四喷流质量和2 TeV的平均双喷流质量，如果被解释为信号，则分别导致3.9和1.6标准差的局部和全局显著性。非共振搜索排除了对生产的顶方与质量之间的0.50 TeV至0.77 TeV，除了一个小的间隔之间的0.52和0.58 TeV，超对称的R-宇称违反衰变夸克对，显着扩展以前的限制。在这里，最显着的超出预测的背景发生在平均dijet质量为0.95 TeV，其中本地和全球的意义分别为3.6和2.5标准差。
A search for pairs of dijet resonances with the same mass is conducted in final states with at least four jets. Results are presented separately for the case where the four jet production proceeds via an intermediate resonant state and for nonresonant production. The search uses a data sample corresponding to an integrated luminosity of 138 fb− 1 collected by the CMS detector in proton-proton collisions at= 13 TeV. Model-independent limits, at 95% confidence level, are reported on the production cross section of four-jet and dijet resonances. These first LHC limits on resonant pair production of dijet resonances via high mass intermediate states are applied to a signal model of diquarks that decay into pairs of vector-like quarks, excluding diquark masses below 7.6 TeV for a particular model scenario. There are two events in the tails of the distributions, each with a four-jet mass of 8 TeV and an average dijet mass of 2 TeV, resulting in local and global significances of 3.9 and 1.6 standard deviations, respectively, if interpreted as a signal. The nonresonant search excludes pair production of top squarks with masses between 0.50 TeV to 0.77 TeV, with the exception of a small interval between 0.52 and 0.58 TeV, for supersymmetric R-parity-violating decays to quark pairs, significantly extending previous limits. Here, the most significant excess above the predicted background occurs at an average dijet mass of 0.95 TeV, for which the local and global significances are 3.6 and 2.5 standard deviations, respectively.