首页|Search for lepton flavor-violating decay modes $B^0 \to K^{\ast 0}\tau^\pm\ell^\mp$ ($\ell = e,\mu$) with hadronic B-tagging at Belle and Belle II

Search for lepton flavor-violating decay modes $B^0 \to K^{\ast 0}\tau^\pm\ell^\mp$ ($\ell = e,\mu$) with hadronic B-tagging at Belle and Belle II

来源：

Arxiv

英文摘要

We present the results of a search for the charged-lepton-flavor violating decays $B^0 \rightarrow K^{*0}\tau^\pm \ell^{\mp}$, where $\ell^{\mp}$ is either an electron or a muon. The results are based on 365 fb$^{-1}$ and 711 fb$^{-1}$ datasets collected with the Belle II and Belle detectors, respectively. We use an exclusive hadronic $B$-tagging technique, and search for a signal decay in the system recoiling against a fully reconstructed $B$ meson. We find no evidence for $B^0 \rightarrow K^{*0}\tau^\pm \ell^{\mp}$ decays and set upper limits on the branching fractions in the range of $(2.9-6.4)\times10^{-5}$ at 90% confidence level.

作者：G. Mancinelli、E. Manoni、M. Mantovano、D. Marcantonio、R. Maiti、R. Manfredi、S. Marcello、A. Martens、C. Marinas、C. Martellini、T. Martinov、K. Matsuoka、S. Moneta、M. Maushart、J. A. McKenna、M. Masuda、L. Massaccesi、D. Matvienko、Z. Mediankin Gruberová、M. Merola、C. Miller、M. Mirra、R. Mizuk、S. Mitra、G. B. Mohanty、D. Meleshko、K. Miyabayashi、F. Meier、M. Naruki、P. Rados、Y. Nakazawa、Z. Natkaniec、A. Natochii、S. Nishida、M. Nayak、M. Neu、G. Raeuber、M. Reif、S. Reiter、T. Podobnik、C. Schmitt、R. ?leb?ík、J. Schmitz、S. Schneider、G. Schnell、M. Schnepf、K. Schoenning、C. Schwanda、Y. Seino、A. Selce、K. Senyo、J. Serrano、M. E. Sevior、C. Sfienti、W. Shan、X. D. Shi、T. Shillington、J. -G. Shiu、D. Shtol、B. Shwartz、A. Sibidanov、F. Simon、J. Skorupa、R. J. Sobie、M. Sobotzik、A. Soffer、A. Sokolov、E. Solovieva、S. Spataro、B. Spruck、M. Stari?、P. Stavroulakis、S. Stefkova、R. Stroili、Y. Sue、M. Sumihama、H. Svidras、M. Takizawa、K. Tanida、F. Tenchini、F. Testa、O. Tittel、R. Tiwary、E. Torassa、B. Scavino、M. Remnev、L. Reuter、D. Ricalde Herrmann、R. Okubo、H. Ono、G. Pakhlova、A. Prakash、C. Praz、K. Trabelsi、F. F. Trantou、I. Tsaklidis、M. Uchida、I. Ueda、T. Uglov、K. Unger、Y. Unno、K. Uno、S. Uno、P. Urquijo、Y. Ushiroda、R. van Tonder、K. E. Varvell、M. Veronesi、A. Vinokurova、V. S. Vismaya、L. Vitale、V. Vobbilisetti、R. Volpe、A. Vossen、S. Wallner、M. -Z. Wang、A. Warburton、M. Watanabe、S. Watanuki、C. Wessel、Y. B. Li、Y. P. Liao、J. Libby、J. Lin、S. Lin、V. Lisovskyi、M. H. Liu、Q. Y. Liu、Y. Liu、Z. Liu、D. Liventsev、S. Longo、T. Lueck、C. Lyu、C. Madaan、M. Maggiora、S. P. Maharana、H. -G. Moser、R. Mussa、I. Nakamura、M. Nakao、I. Ripp-Baudot、M. Bra?ko、P. Branchini、R. A. Briere、T. E. Browder、A. Budano、S. Bussino、M. Campajola、L. Cao、G. Casarosa、C. Cecchi、M. -C. Chang、P. Cheema、B. G. Cheon、K. Chilikin、J. Chin、H. -E. Cho、K. Cho、S. -J. Cho、S. -K. Choi、S. Choudhury、I. Consigny、L. Corona、J. X. Cui、E. De La Cruz-Burelo、S. A. De La Motte、G. de Marino、G. De Pietro、R. de Sangro、M. Destefanis、A. Di Canto、J. Dingfelder、Z. Dole?al、I. Domínguez Jiménez、T. V. Dong、X. Dong、M. Dorigo、G. Dujany、P. Ecker、D. Epifanov、R. Farkas、P. Feichtinger、T. Ferber、T. Fillinger、C. Finck、G. Finocchiaro、F. Forti、A. Frey、B. G. Fulsom、A. Gale、E. Ganiev、M. Garcia-Hernandez、R. Garg、G. Gaudino、V. Gaur、V. Gautam、A. Gaz、A. Gellrich、D. Ghosh、H. Ghumaryan、G. Giakoustidis、R. Giordano、A. Giri、P. Gironella Gironell、B. Gobbo、R. Godang、O. Gogota、P. Goldenzweig、W. Gradl、E. Graziani、D. Greenwald、K. Gudkova、I. Haide、H. Hayashii、S. Hazra、C. Hearty、M. T. Hedges、A. Heidelbach、G. Heine、I. Heredia de la Cruz、M. Hernández Villanueva、T. Higuchi、M. Hoek、M. Hohmann、P. Horak、C. -L. Hsu、T. Humair、T. Iijima、K. Inami、G. Inguglia、N. Ipsita、A. Ishikawa、R. Itoh、M. Iwasaki、P. Jackson、D. Jacobi、W. W. Jacobs、E. -J. Jang、Q. P. Ji、S. Jia、Y. Jin、A. Johnson、M. Kaleta、J. Kandra、K. H. Kang、G. Karyan、F. Keil、C. Ketter、M. Khan、C. Kiesling、D. Y. Kim、J. -Y. Kim、K. -H. Kim、K. Kinoshita、P. Kody?、T. Koga、S. Kohani、K. Kojima、A. Korobov、S. Korpar、E. Kovalenko、R. Kowalewski、P. Kri?an、P. Krokovny、D. Kumar、R. Kumar、K. Kumara、T. Kunigo、A. Kuzmin、Y. -J. Kwon、K. Lalwani、T. Lam、T. S. Lau、M. Laurenza、R. Leboucher、F. R. Le Diberder、M. J. Lee、C. Lemettais、P. Leo、P. M. Lewis、C. Li、H. -J. Li、L. K. Li、W. Z. Li、Y. Li、Belle、Belle II Collaborations、:、I. Adachi、Y. Ahn、H. Aihara、N. Akopov、S. Alghamdi、M. Alhakami、A. Aloisio、K. Amos、M. Angelsmark、N. Anh Ky、C. Antonioli、D. M. Asner、H. Atmacan、V. Aushev、M. Aversano、R. Ayad、V. Babu、H. Bae、N. K. Baghel、S. Bahinipati、P. Bambade、Sw. Banerjee、S. Bansal、M. Barrett、J. Baudot、A. Baur、A. Beaubien、F. Becherer、J. Becker、J. V. Bennett、F. U. Bernlochner、V. Bertacchi、M. Bertemes、E. Bertholet、M. Bessner、S. Bettarini、B. Bhuyan、F. Bianchi、T. Bilka、D. Biswas、A. Bobrov、D. Bodrov、J. Borah、A. Boschetti、A. Bozek、B. D. Yabsley、S. Yamada、W. Yan、S. B. Yang、K. Yi、J. H. Yin、K. Yoshihara、J. Yuan、Y. Yusa、L. Zani、M. Zeyrek、B. Zhang、V. Zhilich、J. S. Zhou、Q. D. Zhou、L. Zhu、G. Rizzo、S. H. Robertson、J. M. Roney、A. Rostomyan、N. Rout、S. Sandilya、L. Santelj、C. Santos、V. Savinov、S. Prell、E. Prencipe、M. T. Prim、I. Prudiiev、H. Purwar、S. Pardi、S. Raiz、V. Raj、K. Ravindran、K. Parham、H. Park、J. Park、S. -H. Park、J. U. Rehman、L. E. Piilonen、A. Passeri、S. Patra、S. Paul、R. Pestotnik

作者单位：

学科分类：物理学

推荐引用：G. Mancinelli,E. Manoni,M. Mantovano,D. Marcantonio,R. Maiti,R. Manfredi,S. Marcello,A. Martens,C. Marinas,C. Martellini,T. Martinov,K. Matsuoka,S. Moneta,M. Maushart,J. A. McKenna,M. Masuda,L. Massaccesi,D. Matvienko,Z. Mediankin Gruberová,M. Merola,C. Miller,M. Mirra,R. Mizuk,S. Mitra,G. B. Mohanty,D. Meleshko,K. Miyabayashi,F. Meier,M. Naruki,P. Rados,Y. Nakazawa,Z. Natkaniec,A. Natochii,S. Nishida,M. Nayak,M. Neu,G. Raeuber,M. Reif,S. Reiter,T. Podobnik,C. Schmitt,R. ?leb?ík,J. Schmitz,S. Schneider,G. Schnell,M. Schnepf,K. Schoenning,C. Schwanda,Y. Seino,A. Selce,K. Senyo,J. Serrano,M. E. Sevior,C. Sfienti,W. Shan,X. D. Shi,T. Shillington,J. -G. Shiu,D. Shtol,B. Shwartz,A. Sibidanov,F. Simon,J. Skorupa,R. J. Sobie,M. Sobotzik,A. Soffer,A. Sokolov,E. Solovieva,S. Spataro,B. Spruck,M. Stari?,P. Stavroulakis,S. Stefkova,R. Stroili,Y. Sue,M. Sumihama,H. Svidras,M. Takizawa,K. Tanida,F. Tenchini,F. Testa,O. Tittel,R. Tiwary,E. Torassa,B. Scavino,M. Remnev,L. Reuter,D. Ricalde Herrmann,R. Okubo,H. Ono,G. Pakhlova,A. Prakash,C. Praz,K. Trabelsi,F. F. Trantou,I. Tsaklidis,M. Uchida,I. Ueda,T. Uglov,K. Unger,Y. Unno,K. Uno,S. Uno,P. Urquijo,Y. Ushiroda,R. van Tonder,K. E. Varvell,M. Veronesi,A. Vinokurova,V. S. Vismaya,L. Vitale,V. Vobbilisetti,R. Volpe,A. Vossen,S. Wallner,M. -Z. Wang,A. Warburton,M. Watanabe,S. Watanuki,C. Wessel,Y. B. Li,Y. P. Liao,J. Libby,J. Lin,S. Lin,V. Lisovskyi,M. H. Liu,Q. Y. Liu,Y. Liu,Z. Liu,D. Liventsev,S. Longo,T. Lueck,C. Lyu,C. Madaan,M. Maggiora,S. P. Maharana,H. -G. Moser,R. Mussa,I. Nakamura,M. Nakao,I. Ripp-Baudot,M. Bra?ko,P. Branchini,R. A. Briere,T. E. Browder,A. Budano,S. Bussino,M. Campajola,L. Cao,G. Casarosa,C. Cecchi,M. -C. Chang,P. Cheema,B. G. Cheon,K. Chilikin,J. Chin,H. -E. Cho,K. Cho,S. -J. Cho,S. -K. Choi,S. Choudhury,I. Consigny,L. Corona,J. X. Cui,E. De La Cruz-Burelo,S. A. De La Motte,G. de Marino,G. De Pietro,R. de Sangro,M. Destefanis,A. Di Canto,J. Dingfelder,Z. Dole?al,I. Domínguez Jiménez,T. V. Dong,X. Dong,M. Dorigo,G. Dujany,P. Ecker,D. Epifanov,R. Farkas,P. Feichtinger,T. Ferber,T. Fillinger,C. Finck,G. Finocchiaro,F. Forti,A. Frey,B. G. Fulsom,A. Gale,E. Ganiev,M. Garcia-Hernandez,R. Garg,G. Gaudino,V. Gaur,V. Gautam,A. Gaz,A. Gellrich,D. Ghosh,H. Ghumaryan,G. Giakoustidis,R. Giordano,A. Giri,P. Gironella Gironell,B. Gobbo,R. Godang,O. Gogota,P. Goldenzweig,W. Gradl,E. Graziani,D. Greenwald,K. Gudkova,I. Haide,H. Hayashii,S. Hazra,C. Hearty,M. T. Hedges,A. Heidelbach,G. Heine,I. Heredia de la Cruz,M. Hernández Villanueva,T. Higuchi,M. Hoek,M. Hohmann,P. Horak,C. -L. Hsu,T. Humair,T. Iijima,K. Inami,G. Inguglia,N. Ipsita,A. Ishikawa,R. Itoh,M. Iwasaki,P. Jackson,D. Jacobi,W. W. Jacobs,E. -J. Jang,Q. P. Ji,S. Jia,Y. Jin,A. Johnson,M. Kaleta,J. Kandra,K. H. Kang,G. Karyan,F. Keil,C. Ketter,M. Khan,C. Kiesling,D. Y. Kim,J. -Y. Kim,K. -H. Kim,K. Kinoshita,P. Kody?,T. Koga,S. Kohani,K. Kojima,A. Korobov,S. Korpar,E. Kovalenko,R. Kowalewski,P. Kri?an,P. Krokovny,D. Kumar,R. Kumar,K. Kumara,T. Kunigo,A. Kuzmin,Y. -J. Kwon,K. Lalwani,T. Lam,T. S. Lau,M. Laurenza,R. Leboucher,F. R. Le Diberder,M. J. Lee,C. Lemettais,P. Leo,P. M. Lewis,C. Li,H. -J. Li,L. K. Li,W. Z. Li,Y. Li,Belle,Belle II Collaborations,:,I. Adachi,Y. Ahn,H. Aihara,N. Akopov,S. Alghamdi,M. Alhakami,A. Aloisio,K. Amos,M. Angelsmark,N. Anh Ky,C. Antonioli,D. M. Asner,H. Atmacan,V. Aushev,M. Aversano,R. Ayad,V. Babu,H. Bae,N. K. Baghel,S. Bahinipati,P. Bambade,Sw. Banerjee,S. Bansal,M. Barrett,J. Baudot,A. Baur,A. Beaubien,F. Becherer,J. Becker,J. V. Bennett,F. U. Bernlochner,V. Bertacchi,M. Bertemes,E. Bertholet,M. Bessner,S. Bettarini,B. Bhuyan,F. Bianchi,T. Bilka,D. Biswas,A. Bobrov,D. Bodrov,J. Borah,A. Boschetti,A. Bozek,B. D. Yabsley,S. Yamada,W. Yan,S. B. Yang,K. Yi,J. H. Yin,K. Yoshihara,J. Yuan,Y. Yusa,L. Zani,M. Zeyrek,B. Zhang,V. Zhilich,J. S. Zhou,Q. D. Zhou,L. Zhu,G. Rizzo,S. H. Robertson,J. M. Roney,A. Rostomyan,N. Rout,S. Sandilya,L. Santelj,C. Santos,V. Savinov,S. Prell,E. Prencipe,M. T. Prim,I. Prudiiev,H. Purwar,S. Pardi,S. Raiz,V. Raj,K. Ravindran,K. Parham,H. Park,J. Park,S. -H. Park,J. U. Rehman,L. E. Piilonen,A. Passeri,S. Patra,S. Paul,R. Pestotnik.Search for lepton flavor-violating decay modes $B^0 \to K^{\ast 0}\tau^\pm\ell^\mp$ ($\ell = e,\mu$) with hadronic B-tagging at Belle and Belle II[EB/OL].(2025-05-13)[2025-06-28].https://arxiv.org/abs/2505.08418.点此复制

Search for lepton flavor-violating decay modes $B^0 \to K^{\ast 0}\tau^\pm\ell^\mp$ ($\ell = e,\mu$) with hadronic B-tagging at Belle and Belle II

Search for lepton flavor-violating decay modes $B^0 \to K^{\ast 0}\tau^\pm\ell^\mp$ ($\ell = e,\mu$) with hadronic B-tagging at Belle and Belle II

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