: We present a search for the lepton flavor violating decays B^{+}→K^{+}τ^{±}ℓ^{∓}, with ℓ=(e,μ), using the full data sample of 772×10^{6}  BB[over ¯] pairs recorded by the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We use events in which one B meson is fully reconstructed in a hadronic decay mode. We find no evidence for B^{±}→K^{±}τℓ decays and set upper limits on their branching fractions at the 90% confidence level in the (1-3)×10^{-5} range. The obtained limits are the world's best results.

Search for the Lepton Flavor Violating Decays B+→K+τ±ℓ∓ (ℓ=e, μ) at Belle / Watanuki, S., de Marino, G., Trabelsi, K., Adachi, I., Aihara, H., Asner, D.M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Banerjee, S.w., Bauer, M., Behera, P., Belous, K., Bessner, M., Bhardwaj, V., Bhuyan, B., Biswas, D., Bodrov, D., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 130:26(2023), p. 261802. [10.1103/PhysRevLett.130.261802]

Search for the Lepton Flavor Violating Decays B+→K+τ±ℓ∓ (ℓ=e, μ) at Belle

Campajola, M;De Nardo, G;Di Capua, F;Merola, M;Russo, G;
2023

Abstract

: We present a search for the lepton flavor violating decays B^{+}→K^{+}τ^{±}ℓ^{∓}, with ℓ=(e,μ), using the full data sample of 772×10^{6}  BB[over ¯] pairs recorded by the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We use events in which one B meson is fully reconstructed in a hadronic decay mode. We find no evidence for B^{±}→K^{±}τℓ decays and set upper limits on their branching fractions at the 90% confidence level in the (1-3)×10^{-5} range. The obtained limits are the world's best results.
2023
Search for the Lepton Flavor Violating Decays B+→K+τ±ℓ∓ (ℓ=e, μ) at Belle / Watanuki, S., de Marino, G., Trabelsi, K., Adachi, I., Aihara, H., Asner, D.M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Banerjee, S.w., Bauer, M., Behera, P., Belous, K., Bessner, M., Bhardwaj, V., Bhuyan, B., Biswas, D., Bodrov, D., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 130:26(2023), p. 261802. [10.1103/PhysRevLett.130.261802]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/938417
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