Light gauge boson interpretation for (g − 2) μ and the KL → π 0 + (invisible) anomaly at the J-PARC KOTO experiment

Yongsoo Jho, Sung Mook Lee, Seong Chan Park, Yeji Park, Po Yan Tseng

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25 Citations (Scopus)


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 KL→ π0 + (invisible) events at the J-PARC KOTO experiment. We consider two models: i) Lμ− Lτ gauge boson with heavy vector-like quarks and ii) (Lμ− Lτ) + є(B3− Lτ) 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.

Original languageEnglish
Article number86
JournalJournal of High Energy Physics
Issue number4
Publication statusPublished - 2020 Apr 1

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© 2020, The Author(s).

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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