论文标题
Ultra Light Pion和Baryon Wimpzilla暗物质
Ultra-Light Pion and Baryon WIMPzilla Dark Matter
论文作者
论文摘要
我们将深色限制量规理论视为毫米的超光乳头（ULP）和重型重子作为暗物质候选者。该模型同时意识到了超光（强烈相互交互的超轻毫米粒子或“树桩”）和超高（“ wimpzilla”）暗物质范式，并通过深色QCD的禁闭量表连接。这是对Millicharged ULDM的实现，这与常规轴非常不同，并且在带电和中性乳头之间表现出质量分裂。对于广泛的深色QCD尺度和夸克质量，ULP可以轻松地提供可观察到的暗物质的密度，并在宇宙学上保持稳定。通过重力颗粒产生或通过冻结产生的深色重子为暗物质密度提供了额外的贡献。在这种情况下，暗物质光环和玻色子恒星通常是三个尖锐和重型重子的混合物，导致了多种密度曲线。与标准的Millicharged DM方案相比，这打开了模型的可访问参数空间，可以通过未来的实验进行探测。我们简要讨论其他有趣的现象学，例如ULP电动力学和宇宙ULP背景。
We consider a dark confining gauge theory with millicharged Ultra-Light Pions (ULP) and heavy baryons as dark matter candidates. The model simultaneously realizes the ultra-light (STrongly-interacting Ultralight Millicharged Particle or "STUMP") and superheavy ("WIMPzilla") dark matter paradigms, connected by the confinement scale of the dark QCD. It is a realization of millicharged ULDM, very unlike conventional axions, and exhibits a mass splitting between the charged and neutral pions. ULPs can easily provide the observed density of the dark matter, and be cosmologically stable, for a broad range of dark QCD scales and quark masses. The dark baryons, produced via gravitational particle production or via freeze-in, provide an additional contribution to the dark matter density. Dark matter halos and boson stars in this context are generically an admixture of the three pions and heavy baryons, leading to a diversity of density profiles. That opens up the accessible parameter space of the model compared with the standard millicharged DM scenarios and can be probed by future experiments. We briefly discuss additional interesting phenomenology, such as ULP electrodynamics, and Cosmic ULP Backgrounds.
