Measurement of $C\!P$ asymmetries and branching-fraction ratios for
$B^\pm \to DK^\pm$ and $D\pi^\pm$ with $D\to K^0_{\rm S} K^\pm\pi^\mp$ using
Belle and Belle II data
Belle,Belle II Collaboration,:,I. Adachi,L. Aggarwal,H. Aihara,N. Akopov,A. Aloisio,N. Anh Ky,D. M. Asner,T. Aushev,V. Aushev,M. Aversano,R. Ayad,V. Babu,H. Bae,S. Bahinipati,P. Bambade,Sw. Banerjee,M. Barrett,J. Baudot,M. Bauer,A. Baur,A. Beaubien,J. Becker,P. K. Behera,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,A. Bolz,A. Bondar,J. Borah,A. Bozek,M. Bračko,P. Branchini,R. A. Briere,T. E. Browder,A. Budano,S. Bussino,M. Campajola,L. Cao,G. Casarosa,C. Cecchi,J. Cerasoli,M. -C. Chang,P. Chang,R. Cheaib,P. Cheema,V. Chekelian,B. G. Cheon,K. Chilikin,K. Chirapatpimol,H. -E. Cho,K. Cho,S. -K. Choi,Y. Choi,S. Choudhury,J. Cochran,L. Corona,L. M. Cremaldi,S. Das,F. Dattola,E. De La Cruz-Burelo,S. A. De La Motte,G. De Nardo,M. De Nuccio,G. De Pietro,R. de Sangro,M. Destefanis,S. Dey,A. De Yta-Hernandez,R. Dhamija,A. Di Canto,F. Di Capua,J. Dingfelder,Z. Doležal,I. Domínguez Jiménez,T. V. Dong,M. Dorigo,K. Dort,S. Dreyer,S. Dubey,G. Dujany,P. Ecker,D. Epifanov,P. Feichtinger,T. Ferber,D. Ferlewicz,T. Fillinger,C. Finck,G. Finocchiaro,A. Fodor,F. Forti,A. Frey,B. G. Fulsom,A. Gabrielli,E. Ganiev,M. Garcia-Hernandez,R. Garg,A. Garmash,G. Gaudino,V. Gaur,A. Gaz,A. Gellrich,G. Ghevondyan,D. Ghosh,H. Ghumaryan,G. Giakoustidis,R. Giordano,A. Giri,B. Gobbo,R. Godang,O. Gogota,P. Goldenzweig,W. Gradl,E. Graziani,D. Greenwald,Z. Gruberová,T. Gu,Y. Guan,K. Gudkova,S. Halder,Y. Han,T. Hara,K. Hayasaka,S. Hazra,M. T. Hedges,I. Heredia de la Cruz,M. Hernández Villanueva,A. Hershenhorn,T. Higuchi,E. C. Hill,M. Hoek,M. Hohmann,W. -S. Hou,C. -L. Hsu,T. Iijima,K. Inami,N. Ipsita,A. Ishikawa,S. Ito,R. Itoh,M. Iwasaki,P. Jackson,W. W. Jacobs,D. E. Jaffe,E. -J. Jang,Q. P. Ji,S. Jia,Y. Jin,A. Johnson,H. Junkerkalefeld,A. B. Kaliyar,J. Kandra,K. H. Kang,G. Karyan,T. Kawasaki,F. Keil,C. Ketter,C. Kiesling,C. -H. Kim,D. Y. Kim,K. -H. Kim,Y. -K. Kim,H. Kindo,K. Kinoshita,P. Kodyš,T. Koga,S. Kohani,K. Kojima,A. Korobov,S. Korpar,E. Kovalenko,R. Kowalewski,T. M. G. Kraetzschmar,P. Križan,P. Krokovny,T. Kuhr,M. Kumar,K. Kumara,T. Kunigo,A. Kuzmin,Y. -J. Kwon,S. Lacaprara,Y. -T. Lai,T. Lam,L. Lanceri,J. S. Lange,M. Laurenza,K. Lautenbach,R. Leboucher,F. R. Le Diberder,P. Leitl,D. Levit,P. M. Lewis,C. Li,L. K. Li,J. Libby,Q. Y. Liu,Z. Q. Liu,D. Liventsev,S. Longo,T. Lueck,T. Luo,C. Lyu,Y. Ma,M. Maggiora,S. P. Maharana,R. Maiti,S. Maity,G. Mancinelli,R. Manfredi,E. Manoni,M. Mantovano,D. Marcantonio,C. Marinas,C. Martellini,A. Martini,T. Martinov,L. Massaccesi,M. Masuda,T. Matsuda,K. Matsuoka,D. Matvienko,S. K. Maurya,J. A. McKenna,R. Mehta,F. Meier,M. Merola,F. Metzner,M. Milesi,C. Miller,M. Mirra,K. Miyabayashi,R. Mizuk,G. B. Mohanty,N. Molina-Gonzalez,S. Mondal,S. Moneta,H. -G. Moser,M. Mrvar,R. Mussa,I. Nakamura,Y. Nakazawa,A. Narimani Charan,M. Naruki,Z. Natkaniec,A. Natochii,L. Nayak,G. Nazaryan,N. K. Nisar,S. Nishida,S. Ogawa,H. Ono,Y. Onuki,P. Oskin,F. Otani,P. Pakhlov,G. Pakhlova,A. Paladino,A. Panta,E. Paoloni,S. Pardi,K. Parham,H. Park,S. -H. Park,A. Passeri,S. Patra,S. Paul,T. K. Pedlar,I. Peruzzi,R. Peschke,R. Pestotnik,F. Pham,M. Piccolo,L. E. Piilonen,P. L. M. Podesta-Lerma,T. Podobnik,S. Pokharel,C. Praz,S. Prell,E. Prencipe,M. T. Prim,H. Purwar,N. Rad,P. Rados,G. Raeuber,S. Raiz,M. Reif,S. Reiter,M. Remnev,I. Ripp-Baudot,G. Rizzo,S. H. Robertson,M. Roehrken,J. M. Roney,A. Rostomyan,N. Rout,G. Russo,D. Sahoo,S. Sandilya,A. Sangal,L. Santelj,Y. Sato,V. Savinov,B. Scavino,C. Schmitt,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,X. D. Shi,T. Shillington,J. -G. Shiu,D. Shtol,A. Sibidanov,F. Simon,J. B. Singh,J. Skorupa,R. J. Sobie,M. Sobotzik,A. Soffer,A. Sokolov,E. Solovieva,S. Spataro,B. Spruck,M. Starič,P. Stavroulakis,S. Stefkova,Z. S. Stottler,R. Stroili,M. Sumihama,K. Sumisawa,W. Sutcliffe,H. Svidras,M. Takahashi,M. Takizawa,U. Tamponi,K. Tanida,F. Tenchini,A. Thaller,O. Tittel,R. Tiwary,D. Tonelli,E. Torassa,K. Trabelsi,I. Tsaklidis,M. Uchida,I. Ueda,T. Uglov,K. Unger,Y. Unno,K. Uno,S. Uno,P. Urquijo,Y. Ushiroda,S. E. Vahsen,R. van Tonder,G. S. Varner,K. E. Varvell,M. Veronesi,V. S. Vismaya,L. Vitale,V. Vobbilisetti,R. Volpe,B. Wach,M. Wakai,S. Wallner,E. Wang,M. -Z. Wang,Z. Wang,A. Warburton,M. Watanabe,S. Watanuki,M. Welsch,C. Wessel,E. Won,X. P. Xu,B. D. Yabsley,S. Yamada,W. Yan,S. B. Yang,J. H. Yin,K. Yoshihara,C. Z. Yuan,Y. Yusa,L. Zani,Y. Zhang,V. Zhilich,J. S. Zhou,Q. D. Zhou,V. I. Zhukova,R. Žlebčík
arXiv (Cornell University)(2023)
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摘要
We measure $C\!P$ asymmetries and branching-fraction ratios for $B^\pm \to DK^\pm$ and $D\pi^\pm$ decays with $D\to K^0_{\rm S} K^\pm\pi^\mp$, where $D$ is a superposition of $D^0$ and $\bar{D}^0$. We use the full data set of the Belle experiment, containing $772\times 10^6~B\bar{B}$ pairs, and data from the Belle~II experiment, containing $387\times 10^6~B\bar{B}$ pairs, both collected in electron-positron collisions at the $\Upsilon(4S)$ resonance. Our results provide model-independent information on the unitarity triangle angle $\phi_3$.