论文标题
LHC处的光线散射横截面测量
Light-by-light scattering cross-section measurements at LHC
论文作者
论文摘要
本说明代表了一种尝试在LHC处收集与光线散射（$γγ$）横截面测量相关的输入，目的是检查具有不同标准模型预测的一致性。我们还首次考虑通过计算其包含的光增生性横截面来考虑$η_b（1s）$ Meson生产到二型不变质量分布的贡献。使用简化的假设集，我们找到了$ 115 \ pm 19 \，\，\ text {nb} $的结果，与两个标准偏差内的标准模型预测一致。尽管改善了对综合信托$ \ textrm {pbpb} \，（γγ）\ to \ textrm {pb}^{（\ ast）} \ textrm {+} {+} {+} \ textrm {+textrm {pb} \ textrm {pb}^aenty of Enlianty of Enliver，cossection to cossectian通过包括现有或即将到来的LHC核数据，预计测量值，预计将进一步改进。
This note represents an attempt to gather the input related to light-by-light scattering ($γγ$) cross-section measurements at LHC with the aim of checking the consistency with different standard model predictions. For the first time, we also consider the contribution from the $η_b(1S)$ meson production to the diphoton invariant mass distribution, by calculating its inclusive photoproduction cross-section. Using a simplified set of assumptions, we find a result of $115\pm 19\,\,\text{nb}$, consistent with standard model predictions within two standard deviations. Although an improved determination of the integrated fiducial $\textrm{PbPb}\,(γγ)\to \textrm{Pb}^{(\ast)}\textrm{+}\textrm{Pb}^{(\ast)}\,γγ$ cross-section by approximately 10\% could be potentially achieved relative to current measurements, further improvements are expected with the inclusion of existing or forthcoming LHC nuclear data.
