Details

Autor(en) / Beteiligte

• Ai, X. C.
• Bao, H. -R.
• Bianchi, F.
• Chen, T.
• Chen, X. R.
• Chen, Y. B.
• Cossio, F.
• Cui, J. J.
• de Boer, R. E.
• Ding, X. X.
• Duan, Z. H.
• Fang, J.
• Feng, J. H.
• Fritsch, M.
• Gramigna, S.
• Han, T. T.
• He, K. K.
• Heinz, C. H.
• Holtmann, T.
• Hou, Y. R.
• Jeong, J. H.
• Ke, B. C.
• Kuessner, M.
• Lavezzi, L.
• Lei, Z. H.
• Lellmann, M.
• Li, C. H.
• Li, J. R.
• Li, T.
• Li, X. L.
• Li, Z. X.
• Liao, L. Z.
• Libby, J.
• Liu, C. X.
• Liu, G. M.
• Liu, J. Y.
• Liu, K. Y.
• Liu, L. C.
• Liu, Lu
• Liu, S. B.
• Liu, Y.
• Liu, Y. B.
• Lu, Y. P.
• Lyu, Y. F.
• Ma, R. Q.
• Ma, Y. M.
• Pacetti, S.
• Pan, Y.
• Pelizaeus, M.
• Peng, H. P.
• Peters, K.
• Qi, H.
• Qian, S.
• Qin, X. S.
• Qin, Z. H.
• Rolo, M.
• Rosner, Ch
• Sarantsev, A.
• Shi, H. C.
• Sun, H.
• Sun, S. S.
• Tan, Y. X.
• Tang, C. J.
• Tang, Y. A.
• Tao, Q. T.
• Tian, W. H.
• Wang, B.
• Wang, C. W.
• Wang, K.
• Wang, Meng
• Wang, S.
• Wang, W.
• Wang, Y. F.
• Wang, Z.
• Wiedner, U.
• Xiao, D.
• Xie, Z. P.
• Xu, C. F.
• Xu, W. L.
• Yan, F.
• Yan, W. C.
• Yu, C. X.
• Yu, G.
• Yu, T.
• Yuan, L.
• Yuan, S. C.
• Yuan, Y.
• Zhang, B. X.
• Zhang, H. Y.
• Zhang, J.
• Zhang, J. Y.
• Zhang, Q. Y.
• Zhang, Shulei
• Zhang, Z. L.
• Zhao, R. P.
• Zhao, Y. X.
• Zhong, B.
• Zhou, X. Y.
• Zhu, K.
• Zou, J. H.

Titel

Determination of Spin-Parity Quantum Numbers of X ( 2370 ) as 0 − + from J / ψ → γ K S 0 K S 0 η

Ist Teil von

• Physical review letters, 2024-05, Vol.132 (18)

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2024

Link zum Volltext

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• Based on ( 10 087 ± 44 ) × 10 6     J / ψ events collected with the BESIII detector, a partial wave analysis of the decay J / ψ → γ K S 0 K S 0 η ′ is performed. The mass and width of the X ( 2370 ) are measured to be 2395 ± 11 ( stat ) − 94 + 26 ( syst )     MeV / c 2 and 188 − 17 + 18 ( stat ) − 33 + 124 ( syst )     MeV , respectively. The corresponding product branching fraction is B [ J / ψ → γ X ( 2370 ) ] × B [ X ( 2370 ) → f 0 ( 980 ) η ′ ] × B [ f 0 ( 980 ) → K S 0 K S 0 ] = ( 1.31 ± 0.22 ( stat ) − 0.84 + 2.85 ( syst ) ) × 10 − 5 . The statistical significance of the X ( 2370 ) is greater than 11.7 σ and the spin parity is determined to be 0 − + for the first time. The measured mass and spin parity of the X ( 2370 ) are consistent with the predictions of the lightest pseudoscalar glueball. <supplementary-material> <copyright-statement>Published by the American Physical Society</copyright-statement> 2024 </supplementary-material>