Determination of Spin-Parity Quantum Numbers of X (2370) as 0-+ from J/ψ →γ KS0 KS0 η′
Yükleniyor...
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
American Physical Society
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
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. © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.
Açıklama
Anahtar Kelimeler
Branching Fractions, Glueballs, Partial-wave-Analysis, Product Branching, Pseudoscalars, Quantum Numbers, Statistical Significance
Kaynak
Physical Review Letters
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
132
Sayı
18
Künye
Ablikim, M., Achasov, M. N., Adlarson, P., Ai, X. C., Aliberti, R., Amoroso, A., ... & Hussain, T. (2024). Determination of Spin-Parity Quantum Numbers of X (2370) as 0-+ from J/ψ→ γ KS 0 KS 0 η′. Physical Review Letters, 132(18), 181901.
