"Additional Table 5" of "Search for supersymmetry in proton-proton collisions at 13 TeV using identified top quarks"

CERN-LHC. CMS. A search for supersymmetry is presented based on proton-proton collision events containing identified hadronically decaying top quarks, no leptons, and an imbalance pT_miss in transverse momentum. The data were collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV, and correspond to an integrated luminosity of 35.9 fb−1. Search regions are defined in terms of the multiplicity of bottom quark jet and top quark candidates, the pT_miss, the scalar sum of jet transverse momenta, and the mT2 mass variable. No statistically significant excess of events is observed relative to the expectation from the standard model. Lower limits on the masses of supersymmetric particles are determined at 95% confidence level in the context of simplified models with top quark production. For a model with direct top squark pair production followed by the decay of each top squark to a top quark and a neutralino, top squark masses up to 1020 GeV and neutralino masses up to 430 GeV are excluded. For a model with pair production of gluinos followed by the decay of each gluino to a top quark-antiquark pair and a neutralino, gluino masses up to 2040 GeV and neutralino masses up to 1150 GeV are excluded. These limits extend previous results.

欧洲核子研究组织（CERN）大型强子对撞机（LHC）下的紧凑缪子线圈（CMS）实验：本研究基于质子-质子对撞事件开展超对称（supersymmetry）搜寻，所选事件需包含已识别的强衰变顶夸克、无轻子，且存在缺失横向动量（pT_miss）。实验数据由CERN LHC上的CMS探测器在质心系能量13 TeV条件下采集，对应的积分亮度为35.9 fb⁻¹。搜寻区域通过底夸克喷注与顶夸克候选体的多重数、缺失横向动量、喷注横向动量标量和以及mT2质量变量进行定义。与标准模型（Standard Model）的理论预期相比，未观测到具有统计显著性的事件超出。在顶夸克产生的简化模型框架下，以95%置信度确定了超对称粒子质量的下限：对于直接成对产生顶超对称夸克（top squark）、随后每个顶超对称夸克衰变为顶夸克与中性伴子（neutralino）的模型，顶超对称夸克质量不超过1020 GeV、中性伴子质量不超过430 GeV的参数空间被排除；对于成对产生胶微子（gluino）、随后每个胶微子衰变为顶夸克-反顶夸克对与中性伴子的模型，胶微子质量不超过2040 GeV、中性伴子质量不超过1150 GeV的参数空间被排除。本结果拓展了此前的实验约束。