发表机构
University College London; Rutherford Appleton Laboratory; Case Western Reserve University（伦敦大学学院; 卢瑟福·阿普尔顿实验室; 凯斯西储大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文研究最小低能标夸克-轻子统一理论的希格斯扇区，计算新希格斯态在LHC的分支比与产生截面，表明希格斯测量可互补直接轻子夸克搜索，为探测物质统一提供新途径。
AI 中文摘要
我们研究了最小低能标夸克-轻子统一理论中的希格斯扇区现象学。除了类似标准模型的希格斯玻色子外，该理论还预言了一个新的CP偶中性希格斯、一个CP奇中性希格斯和两个带电希格斯，以及重的右手中微子和轻子夸克。我们分析了标量谱、负责带电费米子质量的汤川结构，以及通过逆跷跷板机制实现的中微子扇区，强调新希格斯玻色子的耦合直接与物质统一的结构相关，因此导致以第三代费米子为主的特征衰变模式。我们计算了大型强子对撞机（LHC）上新希格斯态的分支比和产生截面，并评估了它们对当前和未来对撞机测量的影响。我们发现，当前LHC数据探测了中性重希格斯玻色子参数空间的重要区域，最强的灵敏度来自涉及τ轻子、顶夸克及相关末态的通道，而带电希格斯由于电弱产生机制而受到较少约束。我们的结果表明，希格斯测量为超越直接轻子夸克搜索的低能标物质统一提供了强大且互补的探测手段，并为在现在和未来的对撞机上测试夸克-轻子统一开辟了新途径，在高亮度LHC运行中具有发现潜力。
英文摘要
We investigate the Higgs sector phenomenology of the minimal low scale quark-lepton unification theory. In addition to the Standard Model-like Higgs boson, the theory predicts a new CP-even neutral Higgs, a CP-odd neutral Higgs, and two charged Higgses, together with heavy right-handed neutrinos and leptoquarks. We analyze the scalar spectrum, the Yukawa structure responsible for charged-fermion masses, and the neutrino sector realized through an inverse-seesaw mechanism, emphasizing that the couplings of the new Higgs bosons are directly tied to the structure of matter unification and therefore lead to characteristic decay patterns dominated by third-generation fermions. We compute the branching ratios and production cross sections of the new Higgs states at the Large Hadron Collider (LHC) and assess their impact on present and future collider measurements. We find that current LHC data probe significant regions of parameter space for the neutral heavy Higgs bosons, with the strongest sensitivity arising from channels involving tau leptons, tops, and related final states, while the charged Higgs remains less constrained because of its electroweak production mechanism. Our results show that Higgs measurements provide a powerful and complementary probe of low-scale matter unification beyond direct leptoquark searches and open a new avenue for testing quark-lepton unification at present and future colliders, with discovery potential in high-luminosity LHC running.
Commentsv2: new author affiliation added
