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de Marino, G; Aihara, H; Asner, D M; Atmacan, H; Aushev, T; Ayad, R; Belous, K; Bhuyan, B; Biswas, D; Bodrov, D; Bonvicini, G; Bozek, A; Browder, T E; Cao, L; Červenkov, D; Cheon, B G; Cho, K; Cho, S-J; Choi, S-K; Choi, Y; Choudhury, S; Cinabro, D; Das, S; De Nardo, G; De Pietro, G; Dhamija, R; Di Capua, F; Dong, T V; Epifanov, D; Fulsom, B G; Garg, R; Gaur, V; Garmash, A; Goldenzweig, P; Graziani, E; Hadjivasiliou, C; Hara, T; Herrmann, D; Hsu, C-L; Inami, K; Inguglia, G; Ipsita, N; Itoh, R; Jacobs, W W; Ji, Q P; Jia, S; Jin, Y; Joo, K K; Kaliyar, A B; Kim, C H; Kim, Y-K; Kodyš, P; Korobov, A; Križan, P; Krokovny, P; Kwon, Y-J; Lewis, P; Li, L K; Libby, J; Lin, Y-R; Liventsev, D; Meier, F; Merola, M; Metzner, F; Miyabayashi, K; Mizuk, R; Mohanty, G B; Nayak, L; Nisar, N K; Pakhlova, G; Park, S-H; Passeri, A; Pedlar, T K; Pestotnik, R; Podobnik, T; Rout, N; Sandilya, S; Sangal, A; Santelj, L; Savinov, V; Schwanda, C; Senyo, K; Sevior, M E; Simon, F; Starič, M; Sumiyoshi, T; Tanida, K; Unno, Y; Uno, K; Uno, S; van Tonder, R; Varvell, K E; Wang, E; Wang, M-Z; Won, E; Xu, X; Yelton, J; Yusa, Y; Zhang, Z P; Zhukova, V
Physical review letters, 06/2023, Volume: 130, Issue: 26Journal Article
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} BBover ¯ 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.
