Details

Autor(en) / Beteiligte

• Li, Y. B.
• Shen, C. P.
• Adachi, I.
• Ahn, J. K.
• Aihara, H.
• Al Said, S.
• Asner, D. M.
• Atmacan, H.
• Aushev, T.
• Ayad, R.
• Babu, V.
• Bakich, A. M.
• Ban, Y.
• Bansal, V.
• Behera, P.
• Beleño, C.
• Berger, M.
• Bhardwaj, V.
• Bhuyan, B.
• Bilka, T.
• Biswal, J.
• Bobrov, A.
• Bozek, A.
• Bračko, M.
• Browder, T. E.
• Campajola, M.
• Cao, L.
• Červenkov, D.
• Chekelian, V.
• Chen, A.
• Cheon, B. G.
• Chilikin, K.
• Cho, H. E.
• Cho, K.
• Choi, Y.
• Choudhury, S.
• Cinabro, D.
• Cunliffe, S.
• Di Carlo, S.
• Doležal, Z.
• Dossett, D.
• Eidelman, S.
• Epifanov, D.
• Fast, J. E.
• Ferber, T.
• Fulsom, B. G.
• Garg, R.
• Gaur, V.
• Gabyshev, N.
• Garmash, A.
• Giri, A.
• Goldenzweig, P.
• Grube, B.
• Grzymkowska, O.
• Haba, J.
• Hara, T.
• Hayasaka, K.
• Hayashii, H.
• Hou, W.-S.
• Iijima, T.
• Inami, K.
• Inguglia, G.
• Ishikawa, A.
• Iwasaki, M.
• Iwasaki, Y.
• Jacobs, W. W.
• Jia, S.
• Jin, Y.
• Joffe, D.
• Joo, K. K.
• Kaliyar, A. B.
• Karyan, G.
• Kato, Y.
• Kawasaki, T.
• Kichimi, H.
• Kim, C. H.
• Kim, D. Y.
• Kim, H. J.
• Kim, K. T.
• Kim, S. H.
• Kinoshita, K.
• Kodyš, P.
• Korpar, S.
• Kotchetkov, D.
• Križan, P.
• Kroeger, R.
• Krokovny, P.
• Kuhr, T.
• Kulasiri, R.
• Kuzmin, A.
• Kwon, Y.-J.
• Lalwani, K.
• Lange, J. S.
• Lee, I. S.
• Lee, J. K.
• Lee, J. Y.
• Lee, S. C.
• Li, C. H.
• Li, L. K.
• Li Gioi, L.

Titel

First measurements of absolute branching fractions of the Ξ c + baryon at Belle

Ist Teil von

• Physical review. D, 2019-08, Vol.100 (3), p.1, Article 031101

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We present the first measurements of the absolute branching fractions of Ξc+ decays into Ξ−π+π+ and pK−π+ final states. Our analysis is based on a data set of (772±11)×106  BB¯ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB e+e− collider. We measure the absolute branching fraction of B¯0→Λ¯c−Ξc+ with the Ξc+ recoiling against Λ¯c− in B¯0 decays resulting in B(B¯0→Λ¯c−Ξc+)=[1.16±0.42(stat.)±0.15(syst.)]×10−3. We then measure the product branching fractions B(B¯0→Λ¯c−Ξc+)B(Ξc+→Ξ−π+π+) and B(B¯0→Λ¯c−Ξc+)B(Ξc+→pK−π+). Dividing these product branching fractions by B¯0→Λ¯c−Ξc+ yields B(Ξc+→Ξ−π+π+)=[2.86±1.21(stat.)±0.38(syst.)]% and B(Ξc+→pK−π+)=[0.45±0.21(stat.)±0.07(syst.)]%. Our result for B(Ξc+→Ξ−π+π+) can be combined with Ξc+ branching fractions measured relative to Ξc+→Ξ−π+π+ to set the absolute scale for many Ξc+ branching fractions.