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arXiv 0901.3165hep-ph
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Cosmic Ray正电子从湮灭到新的重轻子

Cosmic Ray Positrons from Annihilations into a New, Heavy Lepton

Daniel J. Phalen, Aaron Pierce, Neal Weiner

摘要:

PAMELA实验的最新结果表明,在10 GeV以上的正电子谱中存在过剩,但反质子数据与预期的天体物理背景一致。我们提出了一个方案,再现这些功能。暗物质湮灭通过一个新的重矢量轻子的通道,然后通过与标准模型轻子混合而衰变。如果带电,这种重轻子可能在LHC中产生,并可能导致多轻子终态或长寿命的带电轨道。大型的中微子探测器如ANTARES或IceCube可能对单色中微子线敏感。这个场景可以简单地嵌入到各种模型中,包括对NMSSM的扩展。

英文摘要:

Recent results from the PAMELA experiment indicate an excess in the positron spectrum above 10 GeV, but anti-proton data are consistent with the expected astrophysical backgrounds. We propose a scenario that reproduces these features. Dark matter annihilates through channels involving a new heavy vectorlike lepton which then decays by mixing with Standard Model leptons. If charged, this heavy lepton might be produced at the LHC, and could lead to multi-lepton final states or to long-lived charged tracks. Large neutrino detectors such as ANTARES or IceCube might be sensitive to a monochromatic neutrino line. This scenario may be simply embedded in various models, including an extension to the NMSSM.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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