Light gauge boson interpretation for $(g-2)_\mu$ and the $K_L \rightarrow \pi^0 + \text{(invisible)}$ anomaly at the J-PARC KOTO experiment
| Autor: | Jho, Yongsoo, Lee, Sung Mook, Park, Seong Chan, Park, Yeji, Tseng, Po-Yan |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | JHEP04(2020)086 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1007/JHEP04(2020)086 |
| Popis: | We discuss a list of possible light gauge boson interpretations for the long-standing experimental anomaly in $(g-2)_\mu$ and also recent anomalous excess in $K_L \rightarrow \pi^0 + \text{(invisible)}$ events at the J-PARC KOTO experiment. We consider two models: $i$) $L_\mu - L_\tau$ gauge boson with heavy vector-like quarks and $ii$) $(L_\mu - L_\tau) + \epsilon (B_3 - L_\tau)$ 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. Comment: 34 pages, 6 figures |
| Databáze: | arXiv |
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