论文标题
从HL-LHC上搜索来自顶级夸克腐烂的异国情调的希格斯玻色子
Searching for exotic Higgs bosons from top quark decays at the HL-LHC
论文作者
论文摘要
异国情调的旋转$ 0 $状态与标准型号的量规和物质字段具有不寻常的耦合值得在CERN LHC探索。尽管我们的方法在很大程度上是独立的，但我们从基于某些离散对称性的风味模型中汲取灵感，这些符号预测了一组标量和伪尺度，具有纯粹的Yukonal Yukonal Yukonal与Quarks和Leptons的相互作用。在上一篇论文中，我们中的一些人探讨了如何破译这种异国情调的标量和伪喀尔斯卡尔州的状态，其偏离Yukawa的耦合涉及光夸克。在这项工作中，我们遵循一条互补的道路，并专注于必然涉及顶级夸克的Yukawa耦合。如果这样一个旋转$ 0 $的状态比顶级夸克轻一些，那么由于$ t \ bar t $事件的高收益，后者的罕见衰减可能会为这些外来状态提供潜在的狩猎场，尤其是在LHC运行的高亮度阶段。我们使用复杂的机器学习技术对这些外来状态的一些有希望的签名进行了详尽的对撞机分析，并获得了相当大的信号意义。
Exotic spin-$0$ states with unusual couplings with the gauge and matter fields of the Standard Model are worth exploring at the CERN LHC. Though our approach is largely model independent, we take inspiration from flavor models based on some discrete symmetries which predict a set of a scalar and a pseudoscalar having purely off-diagonal Yukawa interactions with quarks and leptons. In a previous paper, some of us explored how to decipher such exotic scalar and pseudoscalar states whose off-diagonal Yukawa couplings involve light quarks. In this work we follow a complementary path and focus on the Yukawa couplings that necessarily involve a top quark. If one such spin-$0$ state is lighter than the top quark, then the rare decay of the latter, on account of the high yield of the $t\bar t$ events, could provide a potential hunting ground of those exotic states particularly during the high luminosity phase of the LHC run. We carry out an exhaustive collider analysis of some promising signatures of those exotic states using sophisticated Machine Learning techniques and obtain considerable signal significance.
