LHC上的新质量共振态
New massive resonances at the LHC
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- Institut für Theoretische Physik und Astrophysik, Uni Würzburg（维尔茨堡大学理论物理与天体物理研究所）
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中文总结 AI 辅助
本文研究复合希格斯模型中自旋-1共振态的LHC唯象学，发现两个中性和一个带电共振态与SM规范玻色子混合，可在Drell-Yan过程中单举产生，质量可低至1.5 TeV且与现有数据一致。
中文摘要 AI 辅助
我们研究了由规范-费米子紫外完备化与部分复合机制产生的复合希格斯模型，其中希格斯玻色子作为赝南布-戈德斯通玻色子（pNGB）出现，顶夸克伙伴表现为三个超费米子的束缚态，且$\u0073\u0075\u0062\u0073\u0063\u0072\u0069\u0070\u0074\u0028\u0053\u0055\u0028\u0032\u0029\u005f\u004c\u005c\u0074\u0069\u006d\u0065\u0073\u0020\u0053\u0055\u0028\u0032\u0029\u005f\u0052\u005c\u0072\u0069\u0067\u0068\u0074\u0029$为未破缺的全局子群。复合希格斯模型预言了一组新的束缚态：自旋-0、自旋-1/2和自旋-1共振态。本文聚焦于自旋-1共振态的唯象学。我们证明这些模型的一个普遍预言是存在两个中性和一个带电的自旋-1共振态，它们与标准模型规范玻色子显著混合。这种混合使得它们能在LHC的Drell-Yan过程中被单举产生。我们研究了这些态在LHC的唯象学，并识别出它们的质量可低至1.5 TeV且与现有LHC数据一致的场景。
英文摘要
We investigate composite Higgs models arising from a gauge-fermionic UV completion with partial compositeness, where the Higgs boson emerges as a pseudo-Nambu-Goldstone boson (pNGB), and top-partners appear as bound states of three hyperfermions, with $\mathrm{SU}(2)_L \times \mathrm{SU}(2)_R$ as the unbroken global subgroup. A bunch of new bound states is predicted by composite Higgs models: spin-0, spin-1/2 and spin-1 resonances. In this work we focus on the phenomenology of the spin-1 resonances. We demonstrate that a generic prediction of these models is the existence of two neutral and one charged spin-1 resonances, which mix significantly with the SM gauge bosons. This mixing allows their single production in Drell-Yan processes at the LHC. We study the LHC phenomenology of these states and identify scenarios where their masses could be as low as $1.5~\mathrm{TeV}$, consistent with the existing LHC data.
