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arXiv 0910.4160hep-phastro-ph.HE
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长寿命中性粒子

Searches for Long Lived Neutral Particles

Patrick Meade, Shmuel Nussinov, Michele Papucci, Tomer Volansky

摘要:

TeV尺度物理的一个有趣的可能性是存在中性长寿命粒子(LOLIPs),随后衰变为SM态。在许多情况下,这样的粒子与对撞机上的丢失横向能量(MET)是无法区分的。我们提出了使用中微子望远镜寻找这些粒子的新方法。我们研究它们的探测前景,假设生产无论是在大型强子对撞机或通过暗物质(DM)在太阳和地球的湮灭。我们发现,在LHC产生的LOLIPs的灵敏度是有限的亮度和检测能量阈值。另一方面,在DM湮灭成LOLIPs的情况下,中微子望远镜的灵敏度是有希望的,可能超出即将到来的直接探测实验的范围。在弱耦合到SM的低尺度隐藏扇区的上下文中,这种间接搜索允许探测小到10^-15的耦合。

英文摘要:

An intriguing possibility for TeV scale physics is the existence of neutral long lived particles (LOLIPs) that subsequently decay into SM states. Such particles are many cases indistinguishable from missing transverse energy (MET) at colliders. We propose new methods to search for these particles using neutrino telescopes. We study their detection prospects, assuming production either at the LHC or through dark matter (DM) annihilations in the Sun and the Earth. We find that the sensitivity for LOLIPs produced at the LHC is limited by luminosity and detection energy thresholds. On the other hand, in the case of DM annihilation into LOLIPs, the sensitivity of neutrino telescopes is promising and may extend beyond the reach of upcoming direct detection experiments. In the context of low scale hidden sectors weakly coupled to the SM, such indirect searches allow to probe couplings as small as 10^-15.

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