论文标题
标量暗物质候选人 - 重新审视
Scalar Dark Matter Candidates -- Revisited
论文作者
论文摘要
我们鉴于鉴于GEV规模以下的新物理学探测新的物理学，我们在MEV中重新审视了光标度暗物质，在MEV中，并通过费米或矢量介体耦合到电子。我们从电子乘客和固定目标梁中建立了新的限制，并得出了环路诱导的过程的强度，这些过程和其他实验室探针和其他实验室探针相比，这些过程的强度。此外，我们计算了SN1987A的冷却，考虑自散射，结构形成和宇宙学约束以及直接检测实验中暗物质电子散射的限制。然后，我们表明，约束的组合在很大程度上排除了这些颗粒的银河an灭可能解释了在银河凸起中观察到的长期积分过量的511 keV光子的可能性。作为这些结论的警告，我们确定了媒介介体几乎在壳上进行的共鸣歼灭制度。
We revisit the possibility of light scalar dark matter, in the MeV to GeV mass bracket and coupled to electrons through fermion or vector mediators, in light of significant experimental and observational advances that probe new physics below the GeV-scale. We establish new limits from electron colliders and fixed-target beams, and derive the strength of loop-induced processes that are probed by precision physics, among other laboratory probes. In addition, we compute the cooling bound from SN1987A, consider self-scattering, structure formation, and cosmological constraints as well as the limits from dark matter-electron scattering in direct detection experiments. We then show that the combination of constraints largely excludes the possibility that the galactic annihilation of these particles may explain the long-standing INTEGRAL excess of 511 keV photons as observed in the galactic bulge. As caveat to these conclusions we identify the resonant annihilation regime where the vector mediator goes nearly on-shell.
