Search for the Lepton Flavor Violating Decays B+ -> K+ tau(+/-) l(-/+) (l = e, mu) at Belle
S. Watanuki,G. de Marino,K. Trabelsi,I. Adachi,H. Aihara,D. M. Asner,H. Atmacan,V. Aulchenko,T. Aushev,R. Ayad,V. Babu,Sw. Banerjee,M. Bauer,P. Behera,K. Belous,M. Bessner,V. Bhardwaj,B. Bhuyan,D. Biswas,D. Bodrov,G. Bonvicini,J. Borah,A. Bozek,M. Bracko,P. Branchini,T. E. Browder,A. Budano,M. Campajola,L. Cao,D. Cervenkov,M. -C. Chang,B. G. Cheon,K. Chilikin,K. Cho,S. -J. Cho,S. -K. Choi,Y. Choi,S. Choudhury,D. Cinabro,S. Das,G. De Nardo,G. De Pietro,R. Dhamija,F. Di Capua,T. V. Dong,D. Epifanov,T. Ferber,D. Ferlewicz,B. G. Fulsom,R. Garg,V. Gaur,A. Garmash,A. Giri,P. Goldenzweig,E. Graziani,T. Gu,Y. Guan,K. Gudkova,C. Hadjivasiliou,S. Halder,X. Han,T. Hara,K. Hayasaka,H. Hayashii,D. Herrmann,W. -S Hou,C. -L Hsu,K. Inami,G. Inguglia,N. Ipsita,A. Ishikawa,R. Itoh,M. Iwasaki,W. W. Jacobs,Q. P. Ji,S. Jia,Y. Jin,K. K. Joo,A. B. Kaliyar,H. Kichimi,C. H. Kim,D. Y. Kim,K. -H Kim,Y. -K. Kim,K. Kinoshita,P. Kodys,A. Korobov,S. Korpar,E. Kovalenko,P. Krizan,P. Krokovny,T. Kuhr,M. Kumar,K. Kumara,A. Kuzmin,Y. -J Kwon,J. S. Lange,M. Laurenza,S. C. Lee,P. Lewis,L. K. Li,Y. Li,L. Li Gioi,J. Libby,Y. -R. Lin,D. Liventsev,T. Matsuda,S. K. Maurya,F. Meier,M. Merola,F. Metzner,K. Miyabayashi,R. Mizuk,G. B. Mohanty,M. Nakao,L. Nayak,M. Nayak,N. K. Nisar,S. Nishida,H. Ono,P. Oskin,G. Pakhlova,S. Pardi,H. Park,J. Park,S. -H. Park,A. Passeri,T. K. Pedlar,R. Pestotnik,L. E. Piilonen,T. Podobnik,E. Prencipe,M. T. Prim,M. Roehrken,N. Rout,G. Russo,S. Sandilya,A. Sangal,L. Santelj,V. Savinov,G. Schnell,C. Schwanda,Y. Seino,K. Senyo,M. E. Sevior,W. Shan,M. Shapkin,J. -G. Shiu,B. Shwartz,F. Simon,E. Solovieva,M. Staric,M. Sumihama,T. Sumiyoshi,M. Takizawa,K. Tanida,F. Tenchini,M. Uchida,T. Uglov,Y. Unno,K. Uno,S. Uno,R. van Tonder,G. Varner,K. E. Varvell,D. Wang,E. Wang,M. -Z. Wang,E. Won,X. Xu,B. D. Yabsley,W. Yan,S. B. Yang,J. Yelton,Y. Yusa,Z. P. Zhang,V. Zhilich,V. Zhukova
PHYSICAL REVIEW LETTERS（2023）
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摘要
We present a search for the lepton flavor violating decays B+ -> K+ tau(+/-) l(-/+), with l = (e, mu), using the full data sample of 772 x 10(6) B (B) over bar 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-+/- tau l decays and set upper limits on their branching fractions at the 90% confidence level in the (1 - 3) x 10(-5) range. The obtained limits are the world's best results.
