标题： 暗物质衰变为光子和中微子：双单色烟雾弹情景 显示英文标题

标题： Dark Matter Decay to a Photon and a Neutrino: the Double Monochromatic Smoking Gun Scenario

摘要： 在几 TeV 到 25 TeV 的能量范围内，对暗物质衰变产生高能单色中微子的上限最近已与对单色伽马射线线的上限相当。 这表明未来从同时观测到相同能量的伽马射线和中微子线中获得双“确凿证据”的可能性明显。 特别是，我们表明，由同一暗物质粒子衰变引起的两条线的场景会导致可以立即进行测试的相关性。 我们通过考虑可能引起这种衰变的最低维有效算符的完整列表来研究这种“双单色”场景。 此外，我们认为除了来自两体末态衰变的线外，三体末态也可能非常相关。 除了产生独特的硬光子谱外，三体末态还会在中微子谱中产生类似线的特征，可以通过中微子望远镜进行搜索。 显示英文摘要

摘要： In the energy range from few TeV to 25 TeV, upper bounds on the dark matter decay rate into high energy monochromatic neutrinos have recently become comparable to those on monochromatic gamma-ray lines. This implies clear possibilities of a future double "smoking-gun" evidence for the dark matter particle, from the observation of both a gamma and a neutrino line at the same energy. In particular, we show that a scenario where both lines are induced from the same dark matter particle decay leads to correlations that can already be tested. We study this "double monochromatic" scenario by considering the complete list of lowest dimensional effective operators that could induce such a decay. Furthermore, we argue that, on top of lines from decays into two-body final states, three-body final states can also be highly relevant. In addition to producing a distinct hard photon spectrum, three-body final states also produce a line-like feature in the neutrino spectrum that can be searched for by neutrino telescopes.