"Table 6" of "Search for new phenomena in high-mass final states with a photon and a jet from $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

A search is performed for new phenomena in events with a high-transverse momentum photon and jets collected in 36.7/fb of pp collisions at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider. The invariant mass distribution of the leading photon and jet is examined to look for a resonant production of new particles or the presence of new high-mass states beyond the Standard Model. No significant deviation is observed in the mass distribution from the background-only hypothesis and cross section limits for generic Gaussian-shaped resonances are extracted. Excited quarks hypothesized in the quark compositeness model and high-mass states predicted in the quantum black hole models with extra dimensions are also examined in the analysis. The observed data exclude, at 95% confidence level, mass range below 5.3 TeV for the excited quarks and 7.1 TeV (4.4 TeV) for the quantum black holes with six (one) extra dimensions in the Arkani-Hamed-Dimopoulos-Dvali (Randall-Sundrum) model.

本研究针对大型强子对撞机（Large Hadron Collider, LHC）ATLAS探测器采集的、质心系能量为13 TeV的质子-质子（pp）碰撞数据集（积分亮度36.7 fb⁻¹）中包含高横动量光子与喷注的事例，开展新物理现象搜寻。本分析通过研究领头光子与领头喷注的不变质量分布，搜寻新粒子的共振产生信号，以及标准模型（Standard Model, SM）之外的新型高质量态。相较于仅包含本底的假说，质量分布未观测到显著偏差；本分析提取了通用高斯型共振态的截面上限。本分析同时检验了夸克复合模型中假设的激发夸克，以及额外维度量子黑洞模型预言的高质量态。基于95%置信度，观测数据排除了如下质量区间：夸克复合模型中激发夸克质量低于5.3 TeV的区间；当额外维度数目为6（1）时，Arkani-Hamed-Dimopoulos-Dvali（Randall-Sundrum）模型下量子黑洞质量低于7.1 TeV（4.4 TeV）的区间。