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    sojungkwoen
    • 2020년 5월 14일
    • 1분

    20-030 Connecting ANITA anomalous events to a nonthermal dark matter scenario

    Debasish Borah, Arnab Dasgupta, Ujjal Kumar Dey, Gaurav Tomar Physical Review D 101, 075039 (2020) https://doi.org/10.1103/PhysRevD.101.075039 Abstract The ANtarctic Impulsive Transient Antenna (ANITA) Collaboration has observed two EeV-energy, upward-going events originating from below the horizon. As no standard-model (SM) particles propagating through the Earth at such energy and exit angles can give rise to the required survival probability for the observed events, severa

    조회수 3회댓글 0개
    sojungkwoen
    • 2020년 4월 14일
    • 1분

    20-009 Radiative neutrino model with semiannihilating dark matter

    Haiying Cai Physical Review D 101, 035006 (2020) https://doi.org/10.1103/PhysRevD.101.035006 Abstract We propose a two-loop induced radiative neutrino model with hidden gauged U (1) symmetry, in which dark matter of Dirac fermions arises. The relic density gets a contribution from annihilation and semiannihilation due to a residual Z_3 parity. After imposing the requirement of neutrino oscillation data and lepton flavor violation bounds, we find that semiannihilation plays a

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