首页|Measurement of the Branching Fraction of $\Lambda_c^+ \to p K_S^0 \pi^0$ at Belle

Measurement of the Branching Fraction of $\Lambda_c^+ \to p K_S^0 \pi^0$ at Belle

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英文摘要

We report a precise measurement of the ratio of branching fractions $\mathcal{B}(\Lambda_c^+\to p K_S^0 \pi^0)/\mathcal{B}(\Lambda_c^+\to p K^- \pi^+)$ using 980 fb$^{-1}$ of $e^+e^-$ data from the Belle experiment. We obtain a value of $\mathcal{B}(\Lambda_c^+\to p K_S^0 \pi^0)/\mathcal{B}(\Lambda_c^+\to p K^- \pi^+)=0.339\pm 0.002\pm 0.009$, where the first and second uncertainties are statistical and systematic, respectively. This Belle result is consistent with the previous measurement from the CLEO experiment but has a fivefold improvement in precision. By combining our result with the world average $\mathcal{B}(\Lambda_c^+\to p K^- \pi^+)$, we obtain the absolute branching fraction $\mathcal{B}(\Lambda_c^+\to p K_S^0 \pi^0)=(2.12\pm 0.01\pm 0.05 \pm 0.10)\%$, where the uncertainties are statistical, systematic, and the uncertainty in the absolute branching fraction scale $\mathcal{B}(\Lambda_c^+\to p K^- \pi^+)$, respectively. This measurement can shed light on hadronic decay mechanisms in charmed baryon decays.

作者：Belle II Collaborations、L. Aggarwal、J. K. Ahn、H. Aihara、M. Alhakami、N. Althubiti、M. Angelsmark、D. M. Asner、N. Anh Ky、H. Atmacan、T. Aushev、V. Aushev、R. Ayad、:、V. Babu、H. Bae、N. K. Baghel、S. Bahinipati、P. Bambade、Sw. Banerjee、S. Choudhury、J. Cochran、L. Corona、P. Goldenzweig、E. Graziani、D. Greenwald、Y. Guan、Z. Gruberová、K. Gudkova、I. Haide、S. Halder、Y. Han、C. Harris、K. Hayasaka、H. Hayashii、S. Hazra、M. T. Hedges、A. Heidelbach、I. Heredia de la Cruz、M. Hernández Villanueva、T. Higuchi、M. Hoek、M. Hohmann、R. Hoppe、P. Horak、C. -L. Hsu、T. Humair、T. Iijima、K. Inami、N. Ipsita、A. Ishikawa、R. Itoh、M. Iwasaki、P. Jackson、D. Jacobi、W. W. Jacobs、E. -J. Jang、S. Jia、Y. Jin、A. Johnson、K. K. Joo、H. Junkerkalefeld、M. Kaleta、J. Kandra、K. H. Kang、R. Mussa、I. Nakamura、M. Nakao、H. Nakazawa、Y. Nakazawa、M. Naruki、Z. Natkaniec、A. Natochii、M. Nayak、G. Nazaryan、M. Neu、S. Nishida、S. Ogawa、H. Ono、Y. Onuki、F. Otani、P. Pakhlov、G. Pakhlova、E. Paoloni、S. Pardi、K. Parham、J. Park、H. Park、I. Adachi、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、A. Vinokurova、H. Ahmed、N. Akopov、A. Aloisio、The Belle、M. Aversano、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、T. Bilka、D. Biswas、A. Bobrov、D. Bodrov、A. Bolz、A. Bondar、J. Borah、A. Boschetti、A. Bozek、M. Bra?ko、P. Branchini、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、P. Cheema、B. G. Cheon、K. Chilikin、K. Chirapatpimol、H. -E. Cho、K. Cho、S. -J. Cho、S. -K. Choi、J. X. Cui、E. De La Cruz-Burelo、S. A. De La Motte、G. De Nardo、G. De Pietro、R. de Sangro、M. Destefanis、S. Dey、R. Dhamija、A. Di Canto、F. Di Capua、J. Dingfelder、Z. Dole?al、I. Domínguez Jiménez、T. V. Dong、D. Dossett、S. Dubey、K. Dugic、G. Dujany、P. Ecker、D. Epifanov、J. Eppelt、P. Feichtinger、T. Ferber、T. Fillinger、C. Finck、G. Finocchiaro、F. Forti、A. Frey、B. G. Fulsom、A. Gabrielli、E. Ganiev、M. Garcia-Hernandez、G. Gaudino、V. Gaur、A. Gaz、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、G. Karyan、T. Kawasaki、F. Keil、C. Ketter、C. Kiesling、C. -H. Kim、D. Y. Kim、J. -Y. Kim、K. -H. Kim、Y. -K. Kim、Y. J. Kim、H. Kindo、K. Kinoshita、P. Kody?、T. Koga、S. Kohani、K. Kojima、A. Korobov、S. Korpar、E. Kovalenko、P. Kri?an、P. Krokovny、T. Kuhr、Y. Kulii、D. Kumar、M. Kumar、R. Kumar、K. Kumara、T. Kunigo、A. Kuzmin、Y. -J. Kwon、S. Lacaprara、Y. -T. Lai、K. Lalwani、T. Lam、J. S. Lange、T. S. Lau、M. Laurenza、R. Leboucher、F. R. Le Diberder、M. J. Lee、C. Lemettais、P. Leo、C. Li、L. K. Li、Q. M. Li、W. Z. Li、Y. Li、Y. B. Li、Y. P. Liao、J. Libby、J. Lin、S. Lin、M. H. Liu、Q. Y. Liu、Y. Liu、Z. Q. Liu、D. Liventsev、S. Longo、C. Lyu、Y. Ma、C. Madaan、M. Maggiora、S. P. Maharana、R. Maiti、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、D. Matvienko、S. K. Maurya、M. Maushart、J. A. McKenna、R. Mehta、F. Meier、D. Meleshko、M. Merola、C. Miller、M. Mirra、S. Mitra、K. Miyabayashi、H. Miyake、R. Mizuk、G. B. Mohanty、S. Mondal、S. Moneta、H. -G. Moser、K. Park、S. -H. Park、B. Paschen、A. Passeri、S. Patra、T. K. Pedlar、I. Peruzzi、R. Peschke、R. Pestotnik、M. Piccolo、L. E. Piilonen、P. L. M. Podesta-Lerma、T. Podobnik、S. Pokharel、C. Praz、S. Prell、E. Prencipe、M. T. Prim、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、M. Roehrken、J. M. Roney、A. Rostomyan、N. Rout、D. A. Sanders、S. Sandilya、L. Santelj、Y. Sato、V. Savinov、B. Scavino、J. Schmitz、S. Schneider、G. Schnell、M. Schnepf、K. Schoenning、T. Shimasaki、J. -G. Shiu、D. Shtol、A. Sibidanov、F. Simon、J. B. Singh、J. Skorupa、M. Sobotzik、A. Soffer、A. Sokolov、E. Solovieva、S. Spataro、B. Spruck、W. Song、M. Stari?、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、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、M. Veronesi、V. S. Vismaya、L. Vitale、V. Vobbilisetti、R. Volpe、A. Vossen、M. Wakai、S. Wallner、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、S. B. Yang、J. Yelton、J. H. Yin、K. Yoshihara、C. Z. Yuan、J. Yuan、L. Zani、F. Zeng、B. Zhang、V. Zhilich、J. S. Zhou、Q. D. Zhou、L. Zhu、V. I. Zhukova、R. ?leb?ík

作者单位：

学科分类：物理学

推荐引用：Belle II Collaborations,L. Aggarwal,J. K. Ahn,H. Aihara,M. Alhakami,N. Althubiti,M. Angelsmark,D. M. Asner,N. Anh Ky,H. Atmacan,T. Aushev,V. Aushev,R. Ayad,:,V. Babu,H. Bae,N. K. Baghel,S. Bahinipati,P. Bambade,Sw. Banerjee,S. Choudhury,J. Cochran,L. Corona,P. Goldenzweig,E. Graziani,D. Greenwald,Y. Guan,Z. Gruberová,K. Gudkova,I. Haide,S. Halder,Y. Han,C. Harris,K. Hayasaka,H. Hayashii,S. Hazra,M. T. Hedges,A. Heidelbach,I. Heredia de la Cruz,M. Hernández Villanueva,T. Higuchi,M. Hoek,M. Hohmann,R. Hoppe,P. Horak,C. -L. Hsu,T. Humair,T. Iijima,K. Inami,N. Ipsita,A. Ishikawa,R. Itoh,M. Iwasaki,P. Jackson,D. Jacobi,W. W. Jacobs,E. -J. Jang,S. Jia,Y. Jin,A. Johnson,K. K. Joo,H. Junkerkalefeld,M. Kaleta,J. Kandra,K. H. Kang,R. Mussa,I. Nakamura,M. Nakao,H. Nakazawa,Y. Nakazawa,M. Naruki,Z. Natkaniec,A. Natochii,M. Nayak,G. Nazaryan,M. Neu,S. Nishida,S. Ogawa,H. Ono,Y. Onuki,F. Otani,P. Pakhlov,G. Pakhlova,E. Paoloni,S. Pardi,K. Parham,J. Park,H. Park,I. Adachi,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,A. Vinokurova,H. Ahmed,N. Akopov,A. Aloisio,The Belle,M. Aversano,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,T. Bilka,D. Biswas,A. Bobrov,D. Bodrov,A. Bolz,A. Bondar,J. Borah,A. Boschetti,A. Bozek,M. Bra?ko,P. Branchini,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,P. Cheema,B. G. Cheon,K. Chilikin,K. Chirapatpimol,H. -E. Cho,K. Cho,S. -J. Cho,S. -K. Choi,J. X. Cui,E. De La Cruz-Burelo,S. A. De La Motte,G. De Nardo,G. De Pietro,R. de Sangro,M. Destefanis,S. Dey,R. Dhamija,A. Di Canto,F. Di Capua,J. Dingfelder,Z. Dole?al,I. Domínguez Jiménez,T. V. Dong,D. Dossett,S. Dubey,K. Dugic,G. Dujany,P. Ecker,D. Epifanov,J. Eppelt,P. Feichtinger,T. Ferber,T. Fillinger,C. Finck,G. Finocchiaro,F. Forti,A. Frey,B. G. Fulsom,A. Gabrielli,E. Ganiev,M. Garcia-Hernandez,G. Gaudino,V. Gaur,A. Gaz,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,G. Karyan,T. Kawasaki,F. Keil,C. Ketter,C. Kiesling,C. -H. Kim,D. Y. Kim,J. -Y. Kim,K. -H. Kim,Y. -K. Kim,Y. J. Kim,H. Kindo,K. Kinoshita,P. Kody?,T. Koga,S. Kohani,K. Kojima,A. Korobov,S. Korpar,E. Kovalenko,P. Kri?an,P. Krokovny,T. Kuhr,Y. Kulii,D. Kumar,M. Kumar,R. Kumar,K. Kumara,T. Kunigo,A. Kuzmin,Y. -J. Kwon,S. Lacaprara,Y. -T. Lai,K. Lalwani,T. Lam,J. S. Lange,T. S. Lau,M. Laurenza,R. Leboucher,F. R. Le Diberder,M. J. Lee,C. Lemettais,P. Leo,C. Li,L. K. Li,Q. M. Li,W. Z. Li,Y. Li,Y. B. Li,Y. P. Liao,J. Libby,J. Lin,S. Lin,M. H. Liu,Q. Y. Liu,Y. Liu,Z. Q. Liu,D. Liventsev,S. Longo,C. Lyu,Y. Ma,C. Madaan,M. Maggiora,S. P. Maharana,R. Maiti,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,D. Matvienko,S. K. Maurya,M. Maushart,J. A. McKenna,R. Mehta,F. Meier,D. Meleshko,M. Merola,C. Miller,M. Mirra,S. Mitra,K. Miyabayashi,H. Miyake,R. Mizuk,G. B. Mohanty,S. Mondal,S. Moneta,H. -G. Moser,K. Park,S. -H. Park,B. Paschen,A. Passeri,S. Patra,T. K. Pedlar,I. Peruzzi,R. Peschke,R. Pestotnik,M. Piccolo,L. E. Piilonen,P. L. M. Podesta-Lerma,T. Podobnik,S. Pokharel,C. Praz,S. Prell,E. Prencipe,M. T. Prim,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,M. Roehrken,J. M. Roney,A. Rostomyan,N. Rout,D. A. Sanders,S. Sandilya,L. Santelj,Y. Sato,V. Savinov,B. Scavino,J. Schmitz,S. Schneider,G. Schnell,M. Schnepf,K. Schoenning,T. Shimasaki,J. -G. Shiu,D. Shtol,A. Sibidanov,F. Simon,J. B. Singh,J. Skorupa,M. Sobotzik,A. Soffer,A. Sokolov,E. Solovieva,S. Spataro,B. Spruck,W. Song,M. Stari?,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,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,M. Veronesi,V. S. Vismaya,L. Vitale,V. Vobbilisetti,R. Volpe,A. Vossen,M. Wakai,S. Wallner,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,S. B. Yang,J. Yelton,J. H. Yin,K. Yoshihara,C. Z. Yuan,J. Yuan,L. Zani,F. Zeng,B. Zhang,V. Zhilich,J. S. Zhou,Q. D. Zhou,L. Zhu,V. I. Zhukova,R. ?leb?ík.Measurement of the Branching Fraction of $\Lambda_c^+ \to p K_S^0 \pi^0$ at Belle[EB/OL].(2025-03-06)[2025-06-26].https://arxiv.org/abs/2503.04371.点此复制

Measurement of the Branching Fraction of $\Lambda_c^+ \to p K_S^0 \pi^0$ at Belle

Measurement of the Branching Fraction of $\Lambda_c^+ \to p K_S^0 \pi^0$ at Belle

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