Determination of Spin-Parity Quantum Numbers of X(2370) as 0−+ from J/ψ→γKS0KS0η′
APS, 2024
Online
academicJournal
- 9
Zugriff:
Based on (10087±44)×106 J/ψ events collected with the BESIII detector, a partial wave analysis of the decay J/ψ→γKS0KS0η′ is performed. The mass and width of the X(2370) are measured to be 2395±11(stat)−94+26(syst) MeV/c2 and 188−17+18(stat)−33+124(syst) MeV, respectively. The corresponding product branching fraction is B[J/ψ→γX(2370)]×B[X(2370)→f0(980)η′]×B[f0(980)→KS0KS0]=(1.31±0.22(stat)−0.84+2.85(syst))×10−5. The statistical significance of the X(2370) is greater than 11.7σ 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.
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Determination of Spin-Parity Quantum Numbers of X(2370) as 0−+ from J/ψ→γKS0KS0η′
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Autor/in / Beteiligte Person: | Ablikim, M. ; Achasov, M. N. ; Adlarson, P. ; Ai, X. C. ; Aliberti, R. ; Amoroso, A. ; An, M. R. ; An, Q. ; Bai, Y. ; Bakina, O. ; Balossino, I. ; Ban, Y. ; Bao, H.R. ; Batozskaya, V. ; Begzsuren, K. ; Berger, N. ; Berlowski, M. ; Bertani, M. ; Bettoni, D. ; Bianchi, F. ; Bianco, E. ; Bortone, A. ; Boyko, I. ; Briere, R. A. ; Brueggemann, A. ; Cai, H. |
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Veröffentlichung: | APS, 2024 |
Medientyp: | academicJournal |
Umfang: | 9 |
DOI: | 10.1103/PhysRevLett.132.181901 |
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