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首页|First measurements of absolute branching fractions of the $\Xi_c^+$ baryon at Belle

First measurements of absolute branching fractions of the $\Xi_c^+$ baryon at Belle

First measurements of absolute branching fractions of the $\Xi_c^+$ baryon at Belle

来源：Arxiv_logoArxiv
英文摘要

We present the first measurements of the absolute branching fractions of $\Xi_c^+$ decays into $\Xi^- \pi^+ \pi^+$ and $p K^- \pi^+$ final states. Our analysis is based on a data set of $(772\pm 11)\times 10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^+e^-$ collider. We measure the absolute branching fraction of $\bar{B}^{0} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{+}$ with the $\Xi_c^+$ recoiling against $\bar{\Lambda}_c^-$ in $\bar{B}^0$ decays resulting in ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{+}) = [1.16 \pm 0.42(\rm stat.) \pm 0.15(\rm syst.)] \times 10^{-3}$. We then measure the product branching fractions ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_c^- \Xi_c^+){\cal B}(\Xi_c^+ \to \Xi^- \pi^+ \pi^+)$ and ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_c^- \Xi_c^+){\cal B}(\Xi_c^+ \to p K^- \pi^+)$. Dividing these product branching fractions by $\bar{B}^{0} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{+}$ yields: ${\cal B}(\Xi_c^+ \to \Xi^- \pi^+ \pi^+) = [2.86 \pm 1.21(\rm stat.) \pm 0.38(\rm syst.)]\%$ and ${\cal B}(\Xi_c^+ \to p K^- \pi^+)=[0.45 \pm 0.21(\rm stat.) \pm 0.07(\rm syst.)]\%$. Our result for ${\cal B}(\Xi_c^+ \to \Xi^- \pi^+ \pi^+)$ can be combined with $\Xi_c^+$ branching fractions measured relative to $\Xi_c^+ \to \Xi^- \pi^+ \pi^+$ to set the absolute scale for many $\Xi_c^+$ branching fractions.

U. Tamponi、D. Sahoo、V. Bhardwaj、E. Won、J. Schueler、M. Nakao、K. Senyo、M. Berger、C. P. Shen、N. Gabyshev、B. G. Fulsom、A. Bozek、M. Sumihama、V. Zhukova、S. Jia、I. Adachi、A. Ishikawa、K. Kinoshita、H. Ye、S. Patra、Y. B. Li、Z. P. Zhang、H. Kichimi、C. H. Kim、J. F. Strube、M. Uchida、M. Salehi、Y. -J. Kwon、S. H. Kim、Y. Unno、M. Nayak、S. Choudhury、K. Miyabayashi、J. Libby、L. Li Gioi、S. Watanuki、R. Kroeger、D. Dossett、V. Zhulanov、T. Sanuki、Y. Ban、R. Mussa、S. Eidelman、T. Matsuda、L. Cao、O. Schneider、L. K. Li、M. Masuda、J. H. Yin、T. Kuhr、D. Kotchetkov、G. B. Mohanty、H. Hayashii、S. Ogawa、M. Ritter、D. Joffe、R. Kulasiri、R. Van Tonder、Y. Iwasaki、Y. Onuki、L. Santelj、V. Popov、J. K. Lee、C. H. Wang、K. Nishimura、K. Lieret、G. Russo、W. W. Jacobs、K. Chilikin、S. C. Lee、M. Takizawa、A. Giri、P. Kri?an、J. -G. Shiu、T. Bilka、P. Wang、T. J. Moon、Y. Jin、T. E. Browder、M. E. Sevior、Y. Kato、D. ?ervenkov、A. Kuzmin、H. Miyata、J. S. Lange、V. Gaur、Y. Seino、V. Zhilich、M. Stari?、C. H. Li、E. Solovieva、Y. Sakai、G. Schnell、A. Sokolov、S. Korpar、P. Pakhlov、M. Bra?ko、J. MacNaughton、W. -S. Hou、M. Iwasaki、B. G. Cheon、H. Ono、S. Di Carlo、V. Bansal、B. Grube、D. M. Asner、P. -C. Lu、Belle Collaboration、B. Wang、S. Paul、A. Rostomyan、A. Vinokurova、K. Hayasaka、P. Goldenzweig、D. Cinabro、N. K. Nisar、C. Schwanda、S. Cunliffe、K. J. Nath、O. Grzymkowska、A. B. Kaliyar、M. Merola、K. Lalwani、H. J. Kim、G. Karyan、J. K. Ahn、K. Cho、V. Savinov、T. Uglov、H. Atmacan、B. Pal、C. Z. Yuan、I. S. Lee、J. Yelton、S. Pardi、T. Kawasaki、D. Epifanov、S. Uno、G. Pakhlova、D. Y. Kim、M. -Z. Wang、P. Kody?、L. E. Piilonen、R. Garg、H. Park、C. Bele?o、S. Nishida、T. Hara、S. Al Said、B. Bhuyan、F. Simon、D. Liventsev、M. Campajola、K. Inami、T. Sumiyoshi、Y. Yusa、Y. Ushiroda、T. Iijima、H. Aihara、K. K. Joo、D. Matvienko、G. Varner、Z. S. Stottler、P. Behera、T. K. Pedlar、M. Niiyama、F. Tenchini、Z. Dole?al、S. B. Yang、S. E. Vahsen、J. Biswal、T. Ferber、K. Tanida、H. E. Cho、A. M. Bakich、T. Aushev、R. Ayad、A. Bobrov、R. Mizuk、Y. Choi、S. -H. Park、J. Haba、A. Garmash、V. Babu、K. T. Kim、B. Shwartz、V. Chekelian、R. Pestotnik、G. Inguglia、V. Shebalin、A. Chen、J. E. Fast、J. Y. Lee、P. Krokovny、E. Prencipe

10.1103/PhysRevD.100.031101

粒子探测技术、辐射探测技术、核仪器仪表物理学

U. Tamponi,D. Sahoo,V. Bhardwaj,E. Won,J. Schueler,M. Nakao,K. Senyo,M. Berger,C. P. Shen,N. Gabyshev,B. G. Fulsom,A. Bozek,M. Sumihama,V. Zhukova,S. Jia,I. Adachi,A. Ishikawa,K. Kinoshita,H. Ye,S. Patra,Y. B. Li,Z. P. Zhang,H. Kichimi,C. H. Kim,J. F. Strube,M. Uchida,M. Salehi,Y. -J. Kwon,S. H. Kim,Y. Unno,M. Nayak,S. Choudhury,K. Miyabayashi,J. Libby,L. Li Gioi,S. Watanuki,R. Kroeger,D. Dossett,V. Zhulanov,T. Sanuki,Y. Ban,R. Mussa,S. Eidelman,T. Matsuda,L. Cao,O. Schneider,L. K. Li,M. Masuda,J. H. Yin,T. Kuhr,D. Kotchetkov,G. B. Mohanty,H. Hayashii,S. Ogawa,M. Ritter,D. Joffe,R. Kulasiri,R. Van Tonder,Y. Iwasaki,Y. Onuki,L. Santelj,V. Popov,J. K. Lee,C. H. Wang,K. Nishimura,K. Lieret,G. Russo,W. W. Jacobs,K. Chilikin,S. C. Lee,M. Takizawa,A. Giri,P. Kri?an,J. -G. Shiu,T. Bilka,P. Wang,T. J. Moon,Y. Jin,T. E. Browder,M. E. Sevior,Y. Kato,D. ?ervenkov,A. Kuzmin,H. Miyata,J. S. Lange,V. Gaur,Y. Seino,V. Zhilich,M. Stari?,C. H. Li,E. Solovieva,Y. Sakai,G. Schnell,A. Sokolov,S. Korpar,P. Pakhlov,M. Bra?ko,J. MacNaughton,W. -S. Hou,M. Iwasaki,B. G. Cheon,H. Ono,S. Di Carlo,V. Bansal,B. Grube,D. M. Asner,P. -C. Lu,Belle Collaboration,B. Wang,S. Paul,A. Rostomyan,A. Vinokurova,K. Hayasaka,P. Goldenzweig,D. Cinabro,N. K. Nisar,C. Schwanda,S. Cunliffe,K. J. Nath,O. Grzymkowska,A. B. Kaliyar,M. Merola,K. Lalwani,H. J. Kim,G. Karyan,J. K. Ahn,K. Cho,V. Savinov,T. Uglov,H. Atmacan,B. Pal,C. Z. Yuan,I. S. Lee,J. Yelton,S. Pardi,T. Kawasaki,D. Epifanov,S. Uno,G. Pakhlova,D. Y. Kim,M. -Z. Wang,P. Kody?,L. E. Piilonen,R. Garg,H. Park,C. Bele?o,S. Nishida,T. Hara,S. Al Said,B. Bhuyan,F. Simon,D. Liventsev,M. Campajola,K. Inami,T. Sumiyoshi,Y. Yusa,Y. Ushiroda,T. Iijima,H. Aihara,K. K. Joo,D. Matvienko,G. Varner,Z. S. Stottler,P. Behera,T. K. Pedlar,M. Niiyama,F. Tenchini,Z. Dole?al,S. B. Yang,S. E. Vahsen,J. Biswal,T. Ferber,K. Tanida,H. E. Cho,A. M. Bakich,T. Aushev,R. Ayad,A. Bobrov,R. Mizuk,Y. Choi,S. -H. Park,J. Haba,A. Garmash,V. Babu,K. T. Kim,B. Shwartz,V. Chekelian,R. Pestotnik,G. Inguglia,V. Shebalin,A. Chen,J. E. Fast,J. Y. Lee,P. Krokovny,E. Prencipe.First measurements of absolute branching fractions of the $\Xi_c^+$ baryon at Belle[EB/OL].(2019-04-26)[2025-08-11].https://arxiv.org/abs/1904.12093.点此复制

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