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  • Yongsoo Jho; Sung Mook Lee; Seong Chan Park; Yeji Park; Po-Yan Tseng

    The journal of high energy physics, 04/2020, Letnik: 2020, Številka: 4
    Journal Article

    Abstract We discuss a list of possible light gauge boson interpretations for the long- standing experimental anomaly in (g − 2) μ and also recent anomalous excess in K L → π 0 + (invisible) events at the J-PARC KOTO experiment. We consider two models: i) L μ − L τ gauge boson with heavy vector-like quarks and ii) (L μ − L τ ) + є(B 3 − L τ ) gauge boson in the presence of right-handed neutrinos. When the light gauge boson has mass close to the neutral pion in order to satisfy the Grossman-Nir bound, the models successfully explain the anomalies simultaneously while satisfying all known experimental constraints. We extensively provide the future prospect of suggested models.