Search for lepton-flavor-violating tau-lepton decays to ℓγ at Belle
2021-10-04 | journal article. A publication with affiliation to the University of Göttingen.
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Search for lepton-flavor-violating tau-lepton decays to ℓγ at Belle
Uno, K.; Hayasaka, K.; Inami, K.; Adachi, I.; Aihara, H.; Asner, D. M. & Atmacan, H. et al. (2021)
Journal of High Energy Physics, 2021(10) art. 19. DOI: https://doi.org/10.1007/JHEP10(2021)019
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Details
- Authors Group
- The BELLE collaboration
The authors list is uncomplete: - Authors
- Uno, K.; Hayasaka, K.; Inami, K.; Adachi, I.; Aihara, H.; Asner, D. M.; Atmacan, H.; Aushev, T.; Ayad, R.; Babu, V.; Bennett, J.; Bernlochner, F.; Bessner, M.; Bhardwaj, V.; Biswal, J.; Bobrov, A.; Bonvicini, G.; Bozek, A.; Bračko, M.; Campajola, M.; Červenkov, D.; Chang, M.-C.; Cho, H. E.; Cho, K.; Cho, S.-J.; Choi, S.-K.; Choi, Y.; Choudhury, S.; Cinabro, D.; Cunliffe, S.; Dash, N.; Di Capua, F.; Dingfelder, J.; Doležal, Z.; Dong, T. V.; Eidelman, S.; Epifanov, D.; Ferber, T.; Frey, A.; Fulsom, B. G.; Garg, R.; Gaur, V.; Gabyshev, N.; Garmash, A.; Giri, A.; Goldenzweig, P.; Hadjivasiliou, C.; Hara, T.; Hartbrich, O.; Hayashii, H.; Jin, Y.
- Abstract
- Abstract Charged lepton flavor violation is forbidden in the Standard Model but possible in several new physics scenarios. In many of these models, the radiative decays τ± → ℓ±γ (ℓ = e, μ) are predicted to have a sizeable probability, making them particularly interesting channels to search at various experiments. An updated search via τ± → ℓ±γ using full data of the Belle experiment, corresponding to an integrated luminosity of 988 fb−1, is reported for charged lepton flavor violation. No significant excess over background predictions from the Standard Model is observed, and the upper limits on the branching fractions, B $ \mathcal{B} $ (τ± → μ±γ) ≤ 4.2 × 10−8 and B $ \mathcal{B} $ (τ± → e±γ) ≤ 5.6 × 10−8, are set at 90% confidence level.
- Issue Date
- 4-October-2021
- Publisher
- Springer Berlin Heidelberg
- Journal
- Journal of High Energy Physics
- eISSN
- 1029-8479
- Language
- English