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arXiv 1609.07658hep-ex
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在pp碰撞中使用剃刀变量的包含搜索(sqrt(s)= 13)TeV

Inclusive search for supersymmetry using razor variables in pp collisions at sqrt(s) = 13 TeV

CMS Collaboration

摘要:

一个包容性的搜索超对称性使用剃刀变量进行的事件有四个或更多的喷流和不超过一个轻子。这些结果是基于质子-质子碰撞的样本,对应于CMS实验在质量中心能量sqrt(s)= 13 TeV时收集的2.3个反飞秒的积分亮度。在数据中没有观察到超过背景预测的显著过量,并且在各种简化模型中对新的重粒子的质量设置了95%置信水平的排除限制。假设成对产生的胶子只通过三代夸克加中性伴子的三体过程衰变,并且中性伴子是最轻的超对称粒子,质量为200 GeV,那么胶子质量低于1.6 TeV的胶子就被排除在各个胶子衰变模式的任何分支分数之外。对于一些特定的衰变模式的情况下,胶子质量高达1.65 TeV被排除在外。对于衰变到第一代和第二代夸克以及质量为200 GeV的中性伴子,质量高达1.4 TeV的胶子被排除在外。顶夸克衰变为顶夸克和质量为100 GeV的中性伴子的对生产被排除在顶夸克质量高达750 GeV。

英文摘要:

An inclusive search for supersymmetry using razor variables is performed in events with four or more jets and no more than one lepton. The results are based on a sample of proton-proton collisions corresponding to an integrated luminosity of 2.3 inverse femtobarns collected with the CMS experiment at a center-of-mass energy of sqrt(s) = 13 TeV. No significant excess over the background prediction is observed in data, and 95% confidence level exclusion limits are placed on the masses of new heavy particles in a variety of simplified models. Assuming that pair-produced gluinos decay only via three-body processes involving third-generation quarks plus a neutralino, and that the neutralino is the lightest supersymmetric particle with a mass of 200 GeV, gluino masses below 1.6 TeV are excluded for any branching fractions for the individual gluino decay modes. For some specific decay mode scenarios, gluino masses up to 1.65 TeV are excluded. For decays to first- and second-generation quarks and a neutralino with a mass of 200 GeV, gluinos with masses up to 1.4 TeV are excluded. Pair production of top squarks decaying to a top quark and a neutralino with a mass of 100 GeV is excluded for top squark masses up to 750 GeV.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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