论文标题
使用$ h \toγγ$ channel在$ \ sqrt {s} = 13 $ tev的属性测量$ \ sqrt {s} = 13 $ tev使用$ 139 $ fb $^{ - 1} $ $ pp $ collision collision collision collision
Measurement of the properties of Higgs boson production at $\sqrt{s} = 13$ TeV in the $H\toγγ$ channel using $139$ fb$^{-1}$ of $pp$ collision data with the ATLAS experiment
论文作者
论文摘要
使用139 fb $^{ - 1} $ $ pp $碰撞数据在$ \ sqrt {s} = 13 $ tev在LHC在LHC上收集的$ \ sqrt {s} = 13 $ tev。该分析基于使用机器学习技术对101个不同信号区域的定义。 Diphoton通道中的包含HIGGS玻色子信号强度为$ 1.04^{+0.10} _ { - 0.09} $。报道了Gluon-Gluon融合，矢量 - 玻璃融合，与$ W $或$ Z $ BOSON相关的生产以及顶级相关生产过程的横截面。标准模型预测的上限为10倍，用于具有单个顶部夸克的希格斯玻色子的相关生产过程，该过程对顶部夸克Yukawa耦合的符号具有独特的敏感性。希格斯玻色子的产生是通过测量简化模板横截面（STX）进一步表征的。总共测量了28个STX区域的横截面。测得的STX横截面与其标准模型预测兼容，$ p $ - 价值为$ 93 \％$。这些测量还用于对Higgs玻色子耦合强度以及在有效的现场理论方法中的标准模型之外的新相互作用设置约束。在这些测量结果中没有观察到与标准模型预测的显着偏差，与先前的ATLAS结果相比，这些测量可提供显着的敏感性。
Measurements of Higgs boson production cross-sections are carried out in the diphoton decay channel using 139 fb$^{-1}$ of $pp$ collision data at $\sqrt{s} = 13$ TeV collected by the ATLAS experiment at the LHC. The analysis is based on the definition of 101 distinct signal regions using machine-learning techniques. The inclusive Higgs boson signal strength in the diphoton channel is measured to be $1.04^{+0.10}_{-0.09}$. Cross-sections for gluon-gluon fusion, vector-boson fusion, associated production with a $W$ or $Z$ boson, and top associated production processes are reported. An upper limit of 10 times the Standard Model prediction is set for the associated production process of a Higgs boson with a single top quark, which has a unique sensitivity to the sign of the top quark Yukawa coupling. Higgs boson production is further characterized through measurements of Simplified Template Cross-Sections (STXS). In total, cross-sections of 28 STXS regions are measured. The measured STXS cross-sections are compatible with their Standard Model predictions, with a $p$-value of $93\%$. The measurements are also used to set constraints on Higgs boson coupling strengths, as well as on new interactions beyond the Standard Model in an effective field theory approach. No significant deviations from the Standard Model predictions are observed in these measurements, which provide significant sensitivity improvements compared to the previous ATLAS results.
