Measurement of the $ D^{0}\rightarrow K^{-}Ï^{+}e^{+}e^{-} $ branching fraction and search for $ D^{0}\rightarrow Ï^{+}Ï^{-}e^{+}e^{-} $ and $D^{0}\rightarrow K^{+}K^{-}e^{+}e^{-} $ decays at Belle
Measurement of the $ D^{0}\rightarrow K^{-}Ï^{+}e^{+}e^{-} $ branching fraction and search for $ D^{0}\rightarrow Ï^{+}Ï^{-}e^{+}e^{-} $ and $D^{0}\rightarrow K^{+}K^{-}e^{+}e^{-} $ decays at Belle
We present a study of the rare charm meson decays $ D^{0}\rightarrow K^{+}K^{-}e^{+}e^{-} $, $ Ï^{+}Ï^{-}e^{+}e^{-} $, and $ K^{-}Ï^{+}e^{+}e^{-} $ using a 942 fb$^{-1}$ data set collected by the Belle detector at the KEKB asymmetric-energy $ e^{+}e^{-} $ collider. We use $ D^{0} $ candidates identified by the charge of the pion in $ D^{*} \rightarrow D^{0} Ï$ decays and normalize the branching fractions to $ D^{0} \rightarrow K^{-}Ï^{+}Ï^{-}Ï^{+} $ decays. The branching fraction for decay $ D^{0} \rightarrow K^{-}Ï^{+}e^{+}e^{-} $ is measured to be (39.6 $\pm$ 4.5 (stat) $\pm$ 2.9 (syst)) $\times$ $10^{-7}$, with the dielectron mass in the $ Ï/Ï$ mass region $ 675 < m_{ee} < 875 $ MeV$/c^{2}$. We also search for $ D^{0}\rightarrow h^{-} h^{(\prime)+}e^{+}e^{-} $ ($ h^{(\prime)}=K,\,Ï$) decays with the dielectron mass near the $η$ and $Ï$ resonances, and away from these resonances for the $ K^{+}K^{-}e^{+}e^{-} $ and $ Ï^{+}Ï^{-}e^{+}e^{-} $ modes. For these modes, we find no significant signals and set 90$\%$ confidence level upper limits on their branching fractions at the $\mathcal{O}$(10$^{-7}$) level.
G. Finocchiaro、B. G. Fulsom、A. Gabrielli、R. Garg、E. Graziani、H. Hayashii、J. H. Yin、S. Hazra、M. T. Hedges、A. Heidelbach、I. Heredia de la Cruz、M. Hernández Villanueva、J. Yelton、K. Yi、M. Hohmann、R. Hoppe、P. Horak、C. -L. Hsu、A. Huang、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、K. K. Joo、H. Junkerkalefeld、A. B. Kaliyar、J. Kandra、K. H. Kang、S. Kang、G. Karyan、T. Kawasaki、F. Keil、C. Ketter、C. Kiesling、C. -H. Kim、D. Y. Kim、J. -Y. Kim、K. -H. Kim、Y. J. Kim、Y. -K. Kim、H. Kindo、K. Kinoshita、P. Kodyš、T. Koga、S. Kohani、K. Kojima、A. Korobov、Z. Liptak、M. H. Liu、Q. Y. Liu、Y. Liu、Z. Q. Liu、D. Liventsev、S. Longo、A. Lozar、T. Lueck、C. Lyu、Y. Ma、C. Madaan、M. Maggiora、S. P. Maharana、R. Maiti、S. Maity、G. Mancinelli、R. Manfredi、E. Manoni、M. Mantovano、D. Marcantonio、S. Marcello、C. Marinas、C. Martellini、A. Martens、A. Martini、T. Martinov、L. Massaccesi、M. Masuda、T. Matsuda、D. Matvienko、S. K. Maurya、M. Maushart、J. A. McKenna、R. Mehta、F. Meier、D. Meleshko、M. Merola、C. Miller、M. Mirra、S. Mitra、J. Yuan、S. Korpar、E. Kovalenko、R. Kowalewski、P. Križan、P. Krokovny、T. Kuhr、Y. Kulii、D. Kumar、J. Kumar、M. Kumar、R. Kumar、K. Kumara、T. Kunigo、A. Kuzmin、Y. -J. Kwon、S. Lacaprara、Y. -T. Lai、K. Lalwani、T. Lam、L. Lanceri、J. S. Lange、T. S. Lau、M. Laurenza、K. Lautenbach、R. Leboucher、F. R. Le Diberder、M. J. Lee、C. Lemettais、P. Leo、D. Levit、P. M. Lewis、C. Li、H. -J. Li、L. K. Li、Q. M. Li、S. X. Li、W. Z. Li、Y. Li、Y. B. Li、Y. P. Liao、J. Libby、J. Lin、S. Lin、L. Zani、B. Shwartz、A. Sibidanov、F. Simon、J. B. Singh、J. Skorupa、M. Sobotzik、A. Soffer、A. Sokolov、E. Solovieva、W. Song、S. Spataro、B. Spruck、M. Starič、P. Stavroulakis、S. Stefkova、R. Stroili、J. Strube、Y. Sue、M. Sumihama、K. Sumisawa、W. Sutcliffe、N. Suwonjandee、H. Svidras、M. Takahashi、M. Takizawa、U. Tamponi、K. Tanida、F. Tenchini、A. Thaller、O. Tittel、R. Tiwary、E. Torassa、K. Trabelsi、F. F. Trantou、I. Tsaklidis、M. Uchida、I. Ueda、T. Uglov、K. Unger、Y. Unno、K. Uno、S. Uno、P. Urquijo、Belle、Belle II Collaborations、:、I. Adachi、L. Aggarwal、H. Ahmed、Y. Ahn、H. Aihara、N. Akopov、S. Alghamdi、M. Alhakami、A. Aloisio、N. Althubiti、K. Amos、M. Angelsmark、N. Anh Ky、C. Antonioli、D. M. Asner、H. Atmacan、T. Aushev、V. Aushev、M. Aversano、R. Ayad、V. Babu、H. Bae、N. K. Baghel、S. Bahinipati、P. Bambade、Sw. Banerjee、S. Bansal、M. Barrett、M. Bartl、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、V. Bhardwaj、B. Bhuyan、F. Bianchi、L. Bierwirth、T. Bilka、D. Biswas、A. Bobrov、D. Bodrov、A. Bolz、A. Bondar、J. Borah、A. Boschetti、A. Bozek、M. Bračko、P. Branchini、N. Brenny、R. A. Briere、T. E. Browder、A. Budano、S. Bussino、Q. Campagna、M. Campajola、L. Cao、G. Casarosa、C. Cecchi、J. Cerasoli、M. -C. Chang、P. Chang、R. Cheaib、P. Cheema、C. Chen、L. Chen、B. G. Cheon、K. Chilikin、J. Chin、K. Chirapatpimol、H. -E. Cho、K. Cho、S. -J. Cho、S. -K. Choi、S. Choudhury、J. Cochran、I. Consigny、L. Corona、J. X. Cui、E. De La Cruz-Burelo、S. A. De La Motte、G. de Marino、G. De Nardo、G. De Pietro、R. de Sangro、M. Destefanis、S. Dey、R. Dhamija、A. Di Canto、F. Di Capua、J. Dingfelder、Z. Doležal、I. Domínguez Jiménez、T. V. Dong、X. Dong、K. Dort、D. Dossett、S. Dubey、K. Dugic、G. Dujany、P. Ecker、M. Eliachevitch、D. Epifanov、R. Farkas、P. Feichtinger、T. Ferber、T. Fillinger、C. Finck、A. Fodor、F. Forti、A. Frey、E. Ganiev、M. Garcia-Hernandez、G. Gaudino、V. Gaur、V. Gautam、A. Gellrich、G. Ghevondyan、D. Ghosh、H. Ghumaryan、G. Giakoustidis、R. Giordano、A. Giri、P. Gironella Gironell、A. Glazov、B. Gobbo、R. Godang、O. Gogota、P. Goldenzweig、D. Greenwald、Z. Gruberová、T. Gu、Y. Guan、K. Gudkova、I. Haide、S. Halder、Y. Han、T. Hara、C. Harris、K. Hayasaka、T. Higuchi、M. Hoek、R. Peschke、R. Pestotnik、M. Piccolo、L. E. Piilonen、G. Pinna Angioni、P. L. M. Podesta-Lerma、T. Podobnik、S. Pokharel、A. Prakash、C. Praz、S. Prell、E. Prencipe、M. T. Prim、S. Privalov、I. Prudiiev、H. Purwar、P. Rados、G. Raeuber、S. Raiz、N. Rauls、K. Ravindran、J. U. Rehman、M. Reif、S. Reiter、M. Remnev、L. Reuter、D. Ricalde Herrmann、I. Ripp-Baudot、G. Rizzo、S. H. Robertson、M. Roehrken、J. M. Roney、A. Rostomyan、N. Rout、L. Salutari、D. A. Sanders、S. Sandilya、L. Santelj、Y. Sato、V. Savinov、B. Scavino、C. Schmitt、J. Schmitz、S. Schneider、G. Schnell、M. Schnepf、C. Schwanda、A. J. Schwartz、Y. Seino、A. Selce、K. Senyo、J. Serrano、M. E. Sevior、C. Sfienti、W. Shan、C. Sharma、G. Sharma、C. P. Shen、X. D. Shi、T. Shillington、T. Shimasaki、J. -G. Shiu、D. Shtol、Y. Ushiroda、S. E. Vahsen、R. van Tonder、M. Veronesi、A. Vinokurova、V. S. Vismaya、L. Vitale、V. Vobbilisetti、R. Volpe、A. Vossen、B. Wach、M. Wakai、S. Wallner、E. Wang、M. -Z. Wang、X. L. Wang、Z. Wang、A. Warburton、M. Watanabe、S. Watanuki、C. Wessel、E. Won、X. P. Xu、B. D. Yabsley、S. Yamada、W. Yan、W. C. Yan、S. B. Yang、K. Yoshihara、F. Zeng、M. Zeyrek、B. Zhang、V. Zhilich、J. S. Zhou、Q. D. Zhou、L. Zhu、V. I. Zhukova、R. Žlebčík、K. Miyabayashi、H. Miyake、R. Mizuk、G. B. Mohanty、S. Mondal、S. Moneta、H. -G. Moser、M. Mrvar、R. Mussa、I. Nakamura、M. Nakao、Y. Nakazawa、M. Naruki、Z. Natkaniec、A. Natochii、M. Nayak、G. Nazaryan、M. Neu、C. Niebuhr、M. Niiyama、S. Nishida、S. Ogawa、Y. Onishchuk、H. Ono、Y. Onuki、F. Otani、E. R. Oxford、P. Pakhlov、G. Pakhlova、E. Paoloni、S. Pardi、K. Parham、H. Park、J. Park、K. Park、S. -H. Park、B. Paschen、A. Passeri、S. Patra、S. Paul、T. K. Pedlar、I. Peruzzi
物理学
G. Finocchiaro,B. G. Fulsom,A. Gabrielli,R. Garg,E. Graziani,H. Hayashii,J. H. Yin,S. Hazra,M. T. Hedges,A. Heidelbach,I. Heredia de la Cruz,M. Hernández Villanueva,J. Yelton,K. Yi,M. Hohmann,R. Hoppe,P. Horak,C. -L. Hsu,A. Huang,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,K. K. Joo,H. Junkerkalefeld,A. B. Kaliyar,J. Kandra,K. H. Kang,S. Kang,G. Karyan,T. Kawasaki,F. Keil,C. Ketter,C. Kiesling,C. -H. Kim,D. Y. Kim,J. -Y. Kim,K. -H. Kim,Y. J. Kim,Y. -K. Kim,H. Kindo,K. Kinoshita,P. Kodyš,T. Koga,S. Kohani,K. Kojima,A. Korobov,Z. Liptak,M. H. Liu,Q. Y. Liu,Y. Liu,Z. Q. Liu,D. Liventsev,S. Longo,A. Lozar,T. Lueck,C. Lyu,Y. Ma,C. Madaan,M. Maggiora,S. P. Maharana,R. Maiti,S. Maity,G. Mancinelli,R. Manfredi,E. Manoni,M. Mantovano,D. Marcantonio,S. Marcello,C. Marinas,C. Martellini,A. Martens,A. Martini,T. Martinov,L. Massaccesi,M. Masuda,T. Matsuda,D. Matvienko,S. K. Maurya,M. Maushart,J. A. McKenna,R. Mehta,F. Meier,D. Meleshko,M. Merola,C. Miller,M. Mirra,S. Mitra,J. Yuan,S. Korpar,E. Kovalenko,R. Kowalewski,P. Križan,P. Krokovny,T. Kuhr,Y. Kulii,D. Kumar,J. Kumar,M. Kumar,R. Kumar,K. Kumara,T. Kunigo,A. Kuzmin,Y. -J. Kwon,S. Lacaprara,Y. -T. Lai,K. Lalwani,T. Lam,L. Lanceri,J. S. Lange,T. S. Lau,M. Laurenza,K. Lautenbach,R. Leboucher,F. R. Le Diberder,M. J. Lee,C. Lemettais,P. Leo,D. Levit,P. M. Lewis,C. Li,H. -J. Li,L. K. Li,Q. M. Li,S. X. Li,W. Z. Li,Y. Li,Y. B. Li,Y. P. Liao,J. Libby,J. Lin,S. Lin,L. Zani,B. Shwartz,A. Sibidanov,F. Simon,J. B. Singh,J. Skorupa,M. Sobotzik,A. Soffer,A. Sokolov,E. Solovieva,W. Song,S. Spataro,B. Spruck,M. Starič,P. Stavroulakis,S. Stefkova,R. Stroili,J. Strube,Y. Sue,M. Sumihama,K. Sumisawa,W. Sutcliffe,N. Suwonjandee,H. Svidras,M. Takahashi,M. Takizawa,U. Tamponi,K. Tanida,F. Tenchini,A. Thaller,O. Tittel,R. Tiwary,E. Torassa,K. Trabelsi,F. F. Trantou,I. Tsaklidis,M. Uchida,I. Ueda,T. Uglov,K. Unger,Y. Unno,K. Uno,S. Uno,P. Urquijo,Belle,Belle II Collaborations,:,I. Adachi,L. Aggarwal,H. Ahmed,Y. Ahn,H. Aihara,N. Akopov,S. Alghamdi,M. Alhakami,A. Aloisio,N. Althubiti,K. Amos,M. Angelsmark,N. Anh Ky,C. Antonioli,D. M. Asner,H. Atmacan,T. Aushev,V. Aushev,M. Aversano,R. Ayad,V. Babu,H. Bae,N. K. Baghel,S. Bahinipati,P. Bambade,Sw. Banerjee,S. Bansal,M. Barrett,M. Bartl,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,V. Bhardwaj,B. Bhuyan,F. Bianchi,L. Bierwirth,T. Bilka,D. Biswas,A. Bobrov,D. Bodrov,A. Bolz,A. Bondar,J. Borah,A. Boschetti,A. Bozek,M. Bračko,P. Branchini,N. Brenny,R. A. Briere,T. E. Browder,A. Budano,S. Bussino,Q. Campagna,M. Campajola,L. Cao,G. Casarosa,C. Cecchi,J. Cerasoli,M. -C. Chang,P. Chang,R. Cheaib,P. Cheema,C. Chen,L. Chen,B. G. Cheon,K. Chilikin,J. Chin,K. Chirapatpimol,H. -E. Cho,K. Cho,S. -J. Cho,S. -K. Choi,S. Choudhury,J. Cochran,I. Consigny,L. Corona,J. X. Cui,E. De La Cruz-Burelo,S. A. De La Motte,G. de Marino,G. De Nardo,G. De Pietro,R. de Sangro,M. Destefanis,S. Dey,R. Dhamija,A. Di Canto,F. Di Capua,J. Dingfelder,Z. Doležal,I. Domínguez Jiménez,T. V. Dong,X. Dong,K. Dort,D. Dossett,S. Dubey,K. Dugic,G. Dujany,P. Ecker,M. Eliachevitch,D. Epifanov,R. Farkas,P. Feichtinger,T. Ferber,T. Fillinger,C. Finck,A. Fodor,F. Forti,A. Frey,E. Ganiev,M. Garcia-Hernandez,G. Gaudino,V. Gaur,V. Gautam,A. Gellrich,G. Ghevondyan,D. Ghosh,H. Ghumaryan,G. Giakoustidis,R. Giordano,A. Giri,P. Gironella Gironell,A. Glazov,B. Gobbo,R. Godang,O. Gogota,P. Goldenzweig,D. Greenwald,Z. Gruberová,T. Gu,Y. Guan,K. Gudkova,I. Haide,S. Halder,Y. Han,T. Hara,C. Harris,K. Hayasaka,T. Higuchi,M. Hoek,R. Peschke,R. Pestotnik,M. Piccolo,L. E. Piilonen,G. Pinna Angioni,P. L. M. Podesta-Lerma,T. Podobnik,S. Pokharel,A. Prakash,C. Praz,S. Prell,E. Prencipe,M. T. Prim,S. Privalov,I. Prudiiev,H. Purwar,P. Rados,G. Raeuber,S. Raiz,N. Rauls,K. Ravindran,J. U. Rehman,M. Reif,S. Reiter,M. Remnev,L. Reuter,D. Ricalde Herrmann,I. Ripp-Baudot,G. Rizzo,S. H. Robertson,M. Roehrken,J. M. Roney,A. Rostomyan,N. Rout,L. Salutari,D. A. Sanders,S. Sandilya,L. Santelj,Y. Sato,V. Savinov,B. Scavino,C. Schmitt,J. Schmitz,S. Schneider,G. Schnell,M. Schnepf,C. Schwanda,A. J. Schwartz,Y. Seino,A. Selce,K. Senyo,J. Serrano,M. E. Sevior,C. Sfienti,W. Shan,C. Sharma,G. Sharma,C. P. Shen,X. D. Shi,T. Shillington,T. Shimasaki,J. -G. Shiu,D. Shtol,Y. Ushiroda,S. E. Vahsen,R. van Tonder,M. Veronesi,A. Vinokurova,V. S. Vismaya,L. Vitale,V. Vobbilisetti,R. Volpe,A. Vossen,B. Wach,M. Wakai,S. Wallner,E. Wang,M. -Z. Wang,X. L. Wang,Z. Wang,A. Warburton,M. Watanabe,S. Watanuki,C. Wessel,E. Won,X. P. Xu,B. D. Yabsley,S. Yamada,W. Yan,W. C. Yan,S. B. Yang,K. Yoshihara,F. Zeng,M. Zeyrek,B. Zhang,V. Zhilich,J. S. Zhou,Q. D. Zhou,L. Zhu,V. I. Zhukova,R. Žlebčík,K. Miyabayashi,H. Miyake,R. Mizuk,G. B. Mohanty,S. Mondal,S. Moneta,H. -G. Moser,M. Mrvar,R. Mussa,I. Nakamura,M. Nakao,Y. Nakazawa,M. Naruki,Z. Natkaniec,A. Natochii,M. Nayak,G. Nazaryan,M. Neu,C. Niebuhr,M. Niiyama,S. Nishida,S. Ogawa,Y. Onishchuk,H. Ono,Y. Onuki,F. Otani,E. R. Oxford,P. Pakhlov,G. Pakhlova,E. Paoloni,S. Pardi,K. Parham,H. Park,J. Park,K. Park,S. -H. Park,B. Paschen,A. Passeri,S. Patra,S. Paul,T. K. Pedlar,I. Peruzzi.Measurement of the $ D^{0}\rightarrow K^{-}Ï^{+}e^{+}e^{-} $ branching fraction and search for $ D^{0}\rightarrow Ï^{+}Ï^{-}e^{+}e^{-} $ and $D^{0}\rightarrow K^{+}K^{-}e^{+}e^{-} $ decays at Belle[EB/OL].(2025-07-07)[2025-07-16].https://arxiv.org/abs/2507.05050.点此复制
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