期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 9, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP09(2020)144
关键词
Beyond Standard Model; Effective Field Theories
资金
- Kobayashi-Maskawa Institute for the Origin of Particles and the Universe
- Toyoaki scholarship foundation
- Japan Society for the Promotion of Science (JSPS) [19J10980]
- Ministry of Education, Science, Sports, and Culture (MEXT), Japan [19H04614, 19H05101, 19K03867]
- JSPS [16H03991, 16H02176, 18K03611, 19H04613]
- Grants-in-Aid for Scientific Research [16H03991, 18K03611, 19K03867, 19J10980, 19H04614, 19H04613, 19H05101] Funding Source: KAKEN
The discrepancy between the measured value and the Standard Model prediction of the muon anomalous magnetic moment is one of the most important issues in the particle physics. It is known that introducing a mediator boson X with the mu tau lepton flavor violating (LFV) couplings is one good solution to explain the discrepancy, due to the tau mass enhancement in the one-loop correction. In this paper, we study the signal of this model, i.e. the same-sign leptons, in the Belle II experiment, assuming the flavor-diagonal couplings are suppressed. We show that the Belle II experiment is highly sensitive to the scenario in the mediator mass range of O(1-10) GeV, using the e(+)e(-)-> mu (+/-)tau X--/+ -> mu (+/-)mu (+/-)tau (-/+)tau (-/+) process induced by the X .
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