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新山 雅之 所属 京都産業大学 理学部 物理科学科 職種 教授 |
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| 発行・発表の年月 | 2019/08 |
| 形態種別 | その他 |
| 査読 | 査読あり |
| 標題 | Experimental determination of the isospin of $Λ_c(2765)^+/Σ_c(2765)^+$ |
| 執筆形態 | その他 |
| 著者・共著者 | The Belle Collaboration,A. Abdesselam,I. Adachi,K. Adamczyk,J. K. Ahn,H. Aihara,S. Al Said,K. Arinstein,Y. Arita,D. M. Asner,H. Atmacan,V. Aulchenko,T. Aushev,R. Ayad,T. Aziz,V. Babu,I. Badhrees,S. Bahinipati,A. M. Bakich,Y. Ban,V. Bansal,E. Barberio,M. Barrett,W. Bartel,P. Behera,C. Beleño,K. Belous,J. Bennett,M. Berger,F. Bernlochner,D. Besson,V. Bhardwaj,B. Bhuyan,T. Bilka,J. Biswal,T. Bloomfield,A. Bobrov,A. Bondar,G. Bonvicini,A. Bozek,M. Bračko,N. Braun,F. Breibeck,T. E. Browder,M. Campajo |
| 概要 | We report an experimental determination of the isospin of
$\Lambda_c(2765)^+/\Sigma_c(2765)^+$ using 980 fb$^{-1}$ data in the $e^+e^-$ annihilation around $\sqrt{s} = 10.6$ GeV collected by the Belle detector located at the KEKB collider. The isospin partners are searched for in the $\Sigma_c(2455)^{++/0} \pi^{0}$ channels, and no evidence was obtained. Thus the isospin is determined to be zero, and the particle is established to be a $\Lambda_c$. |