标题： 银河系中心来自引力增强的中性子的新伽马射线信号 显示英文标题

标题： New gamma ray signal from gravitationally boosted neutralinos at the galactic center

摘要： 我们讨论了在银河系中心的超大质量黑洞附近，以中性微子形式存在的碰撞暗物质粒子是否可能被引力增强，从而获得足够的碰撞能量以湮灭成一个超tau子对的可能性。 由于在一些在现象学上受青睐的超对称模型中，中性微子和最轻的超tau子（tau轻子的两个标量超对称伙伴之一）之间的质量分裂为几个GeV，因此该通道可能是允许的。 此外，超tau子只能衰变成一个tau轻子和另一个中性微子。 我们计算了由tau子对产生的伽马射线谱和通量，并讨论了所得到特征的可观测性。 显示英文摘要

摘要： We discuss on the possibility that colliding dark matter particles in the form of neutralinos may be gravitationally boosted near the super-massive black hole at the galactic center so that they can have enough collision energy to annihilate into a stau pair. Since in some phenomenologically favored supersymmetric models the mass splitting between the neutralino and the lightest stau, one of the two scalar superpartners of the tau lepton, is a few GeVs, this channel may be allowed. In addition, staus can only decay into a tau lepton and another neutralino. We calculate the gamma-ray spectrum and flux generated by the tau pair discussing the observability of the obtained features.