Details

Autor(en) / Beteiligte

• Ai, X. C.
• Albayrak, O.
• Bian, J. M.
• Bianchi, F.
• Boyko, I.
• Briere, R. A.
• Calcaterra, A.
• Cao, G. F.
• Cetin, S. A.
• Chen, S. J.
• Deng, Z. Y.
• Dou, Z. L.
• Fang, X.
• Fang, Y.
• Fava, L.
• Fedorov, O.
• Fioravanti, E.
• Fu, C. D.
• Gao, Q.
• Guan, Y. H.
• Guo, R. P.
• Guo, Y.
• Hafner, A.
• Hu, H. M.
• Hu, T.
• Ji, Q. P.
• Ji, X. B.
• Kang, X. L.
• Lange, J. S.
• Larin, P.
• Li, W. D.
• Li, W. G.
• Liang, H.
• Lin, D. X.
• Liu, F. H.
• Liu, Feng
• Liu, H. B.
• Liu, H. H.
• Liu, K.
• Liu, Y. B.
• Loehner, H.
• Lu, Y. P.
• Ma, M. M.
• Ma, X. Y.
• Maggiora, M.
• Mo, Y. J.
• Muchnoi, N. Yu
• Nefedov, Y.
• Nisar, S.
• Olsen, S. L.
• Pacetti, S.
• Pan, Y.
• Patteri, P.
• Peng, H. P.
• Prasad, V.
• Ripka, M.
• Shan, W.
• Shao, M.
• Song, W. M.
• Song, X. Y.
• Sun, X. H.
• Sun, Y. J.
• Sun, Y. Z.
• Sun, Z. J.
• Sun, Z. T.
• Wang, L. S.
• Wang, M.
• Wang, W. P.
• Wang, X. F.
• Wang, Y.
• Wang, Y. F.
• Wolke, M.
• Wu, L. J.
• Wu, Z.
• Xia, Y.
• Xiao, D.
• Xu, Q. J.
• Yang, Y. X.
• Yu, C. X.
• Yu, J. S.
• Yuan, C. Z.
• Yuan, W. L.
• Zafar, A. A.
• Zeng, Y.
• Zhang, B. X.
• Zhang, D. H.
• Zhang, H. H.
• Zhang, J. J.
• Zhang, K.
• Zhang, X. Y.
• Zhang, Y.
• Zhang, Yu
• Zhao, M. G.
• Zhao, Q.
• Zhao, Q. W.
• Zhao, T. C.
• Zheng, B.
• Zheng, Y. H.
• Zhu, X. L.
• Zhu, Z. A.

Titel

Amplitude Analysis of the Decays η' → π+π-π0 and η' → π0π0π0

Ist Teil von

• Physical review letters, 2017-01, Vol.118 (1)

Ort / Verlag

United States: American Physical Society (APS)

Erscheinungsjahr

2017

Quelle

American Physical Society [PROLA]

Beschreibungen/Notizen

• Based on a sample of 1.31 × 109J / ψ events collected with the BESIII detector, an amplitude analysis of the isospin-violating decays η'→ π + π - π 0 and η' → π 0 π 0 π 0 is performed. A significant P-wave contribution from η'→ ρ ± π ∓ is observed for the first time in η' → π + π - π 0 . The branching fraction is determined to be B ( η'→ ρ ± π ∓ ) = ( 7.44 ± 0.60 ± 1.26 ± 1.84 ) × 10-4, where the first uncertainty is statistical, the second systematic, and the third model dependent. In addition to the nonresonant S -wave component, there is a significant σ meson component. The branching fractions of the combined S -wave components are determined to be B ( η' → π + π - π 0 ) S = ( 37.63 ± 0.77 ± 2.22 ± 4.48 ) × 10-4 and B ( η' → π 0 π 0 π 0 ) = ( 35.22 ± 0.82 ± 2.54 ) × 10-4, respectively. Finally, the latter one is consistent with previous BESIII measurements.