论文标题
从$ \ sqrt {s} $ = 13 tev中搜索pp碰撞中超对称级联反对的光希格斯玻色子
Search for light Higgs bosons from supersymmetric cascade decays in pp collisions at $\sqrt{s}$ = 13 TeV
论文作者
论文摘要
据报道，搜索了在最终状态下产生的超对称级联反应衰变的光对玻色子（H $ _1 $），而横向动量小。 LHC PP碰撞的数据集与CMS检测器以$ \ sqrt {s} $ = 13 TEV收集，并对应于138 fb $^{ - 1} $的集成光度。搜索目标是将两个h $ _1 $ bosons衰减到$ \ mathrm {b \ bar {b}} $ pairs中的事件，使用子结构技术重建为大型-radius Jets。没有证据表明超出标准模型（SM）背景期望的事件过多的证据。搜索的结果是在SM的近代超级对称扩展中解释的，在该扩展中，小质量的“单身”会导致Squark和Gluino Cascade衰减，主要可能以高度高度的Lorentz增强型单元单h $ _1 $和单身型小型中性中性中性中性的横向横向动量结束。上限设置在Squark或Gluino对生产横截面的产品上，以及$ \ Mathrm {B \ Bar {B}} $在基准模型中h $ _1 $的分支部分的平方，该模型中包含几乎质量分类的Gluinos和Light-Flavour Squarks。在假设的假设下，h $ _1 $ $ \ to $ \ $ \ mathrm {b \ bar {b}} $分支分数，h $ _1 $ _1 $ bosons，质量在40-120 GEV范围内，由Squarks或Gluinos的衰减产生，或Gluinos的损失或Gluinos的质量为1200至2500 GEV，其质量为1200至2500 GEV升级为95％cliforsud corpers celpectud corpers necy corpers cepentud corpers ny 95％。
A search is reported for pairs of light Higgs bosons (H$_1$) produced in supersymmetric cascade decays in final states with small missing transverse momentum. A data set of LHC pp collisions collected with the CMS detector at $\sqrt{s}$ = 13 TeV and corresponding to an integrated luminosity of 138 fb$^{-1}$ is used. The search targets events where both H$_1$ bosons decay into $\mathrm{b\bar{b}}$ pairs that are reconstructed as large-radius jets using substructure techniques. No evidence is found for an excess of events beyond the background expectations of the standard model (SM). Results from the search are interpreted in the next-to-minimal supersymmetric extension of the SM, where a "singlino" of small mass leads to squark and gluino cascade decays that can predominantly end in a highly Lorentz-boosted singlet-like H$_1$ and a singlino-like neutralino of small transverse momentum. Upper limits are set on the product of the squark or gluino pair production cross section and the square of the $\mathrm{b\bar{b}}$ branching fraction of the H$_1$ in a benchmark model containing almost mass-degenerate gluinos and light-flavour squarks. Under the assumption of an SM-like H$_1$ $\to$ $\mathrm{b\bar{b}}$ branching fraction, H$_1$ bosons with masses in the range 40-120 GeV arising from the decays of squarks or gluinos with a mass of 1200 to 2500 GeV are excluded at 95% confidence level.
