Brightening the (130 GeV) Gamma-Ray Line
作者： Tianjun Li , Jinmian Li , Cynthia W. Mitchell , Zhaofeng Kang , Yandong Liu
DOI:
关键词: Charged particle 、 Physics 、 Light dark matter 、 Particle physics 、 Nuclear physics 、 Higgs boson 、 Effective field theory 、 Dark matter 、 Resonance (particle physics) 、 Minimal Supersymmetric Standard Model 、 Annihilation
摘要: The gamma-ray line from dark matter (DM) annihilation is too weak to observe, but its observation will uncover much information, e.g., the DM mass and an anomalously large rate ∼ 0.1 pb into di-photon. In this work, we construct a minimal effective theory (EFT) incorporating heavier charged particles. A obtained operator coefficients with resonance or strong coupling enhancement.The EFT stringently constrained by XENON100 WMAP data. Without resonance, Dirac colored particles are ruled out. It pointed out that di-gluon mode may correctly determine relic density. Interestingly, framework also provides origin for Higgs di-photon excess at LHC. We apply general analysis NMSSM, which can elegantly interpret tentative 130 GeV line. top-window model proposed explain
harvard.edu
arxiv.org
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