"Table $t\bar{t}$ Control Region 2016 Low-Mass" of "Searches for additional Higgs bosons and for vector leptoquarks in $\tau\tau$ final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

Observed and expected distributions of the variable chosen for statistical inference in the $t\bar{t}$ control region $m_{T}^{tot}$ for low-mass analysis. Numerical values provided in this table correspond to the $t\bar{t}$ control region of the publication, restricted to 2016 data-taking year. All distributions are considered after a fit to data is performed using a background-only model, which includes the $\text{H}(125)$ boson. Some details on how the distributions should be used:

1) All given uncertainties correspond to systematic variations of $\pm1\sigma$.
2) Upper values ('plus' in the yaml file) correspond to an upward systematic variation of the parameter ($+1\sigma$).
3) Lower values ('minus' in the yaml file) correspond to a downward systematic variation of the parameter ($-1\sigma$).
4) These variations can have both positive and negative values, depending on the modelled effect.
5) Uncertainties with the same name should be treated as correlated, consistently across the upper and lower variations.
6) Systematic uncertainties with 'prop_' in the name treat limited background statistics per histogram bin, and are deployed with 'Barlow-Beeston-lite' approach. Details in https://arxiv.org/abs/1103.0354 section 5
7) Remaining systematic uncertainties alter the normalization, the shape, or both for a distribution. The nuisance parameter for such an uncertainty is mapped separately on the normalization and the shape variation components of the uncertainty. For normalization, $\ln$ mapping is used, for shape a spline. Details in https://cms-analysis.github.io/HiggsAnalysis-CombinedLimit/part2/settinguptheanalysis/#binned-shape-analysis
8) All nuisance parameters for the systematic uncertainties are modelled with a Gaussian pdf.
9) Gluon fusion contributions are all scaled to 1 pb. Please combine them using either the scale factors from 'Table SM Gluon Fusion Fractions', or using your own composition.

针对低质量分析，在$tar{t}$（顶夸克-反顶夸克对）控制区$m_{T}^{tot}$中选取用于统计推断的变量的观测分布与预期分布。本表给出的数值对应本论文发表所用的$tar{t}$控制区，且限定于2016年数据采集时段。所有分布均为采用仅背景模型（background-only model）——该模型包含$ ext{H}(125)$玻色子——对数据完成拟合后得到的结果。关于该分布的使用说明如下：
1) 所有给出的不确定度均对应$pm1sigma$的系统误差涨落。
2) YAML文件中的"plus"项对应参数的正向系统涨落（$+1sigma$）。
3) YAML文件中的"minus"项对应参数的负向系统涨落（$-1sigma$）。
4) 根据所建模的物理效应，此类涨落的取值可正可负。
5) 名称相同的不确定度应视为相互关联的，在上下涨落处理中需保持一致。
6) 名称中带有"prop_"前缀的系统不确定度对应各直方图分箱内有限的背景统计量，采用"Barlow-Beeston-lite"方法进行处理，详细说明见https://arxiv.org/abs/1103.0354的第5节。
7) 其余系统不确定度会改变分布的归一化水平、形状特征，或同时改变二者。此类不确定度的干扰参数（nuisance parameter）会分别映射至不确定度的归一化分量与形状变化分量：归一化分量采用对数映射，形状分量采用样条插值。详细说明见https://cms-analysis.github.io/HiggsAnalysis-CombinedLimit/part2/settinguptheanalysis/#binned-shape-analysis
8) 所有系统不确定度对应的干扰参数均采用高斯概率密度函数（Gaussian pdf）进行建模。
9) 胶子聚变（gluon fusion）的贡献均已按1 pb完成标度。请使用"Table SM Gluon Fusion Fractions"中的标度因子，或自行选取的标度因子对其进行合并。