论文标题
Leptoquarks和Real Singlets：暗物质起源背后的一个更丰富的标量领域
Leptoquarks and Real Singlets: A Richer Scalar Sector Behind the Origin of Dark Matter
论文作者
论文摘要
我们使用$ \ Mathcal {O}（1 \ Mathrm {\，TEV}）$标量leptoquarks来调查场景，该方案是标准模型和暗物质之间的门户网站。我们假设暗物质是标量单元$ s $，它通过标量潜力中的术语将标量leptoquark $δ$和希格斯玻色子融为一体。此外，Leptoquark还赋予了Yukawa的耦合，向夸克和Leptons赋予了可能解决$ b $ erson衰变异常的夸克和叶子。我们考虑$ ss $ nihihitation Cross部分，以估算深色物质的丰度，并探索此类模型上天体物理，对撞机和风味物理界限之间的相互作用。在沉重的暗物质窗口中，$ m_s>m_δ$，leptoquark门户成为解释深色物质丰度的主要机制。我们发现，Yukawa的Leptoquark Yukawa耦合与夸克和Lepton风味物理学相关，与暗物质现象学分离。通过专注于具有单个Leptoquark状态的方案，我们发现只有当$δ$和$ s $ symes都比$ \ Mathcal {O}（10 \ Mathrm {\，Tev}）$时，才能解释遗物密度。
We investigate scenarios with $\mathcal{O}(1\mathrm{\,TeV})$ scalar leptoquarks that act as portals between the Standard Model and Dark Matter. We assume that Dark Matter is a scalar singlet $S$ which couples to a scalar leptoquark $Δ$ and the Higgs boson via the terms in the scalar potential. In addition, the leptoquark is endowed with Yukawa couplings to quarks and leptons that may address the anomalies in $B$ meson decays. We consider the $SS$ annihilation cross sections to estimate the Dark Matter relic abundance and explore the interplay between astrophysical, collider and flavour physics bounds on such models. In the heavy Dark Matter window, $m_S > m_Δ$, the leptoquark portal becomes the dominant mechanism to explain the Dark Matter abundance. We find that the leptoquark Yukawa couplings, relevant for quark and lepton flavour physics, are decoupled from the dark matter phenomenology. By focussing on a scenario with a single leptoquark state, we find that relic density can only be explained when both $Δ$ and $S$ masses are lighter than $\mathcal{O}(10\mathrm{\,TeV})$.
