Observation of a structure in e+e-→φη′ at s from 2.05 to 3.08 GeV observation of a structure in e+e-→φη′ ... Ablikim M. et al.
Physical Review D, cilt.102, sa.1, 2020 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 102 Sayı: 1
- Basım Tarihi: 2020
- Doi Numarası: 10.1103/physrevd.102.012008
- Dergi Adı: Physical Review D
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, INSPEC, zbMATH
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Ankara Üniversitesi Adresli: Evet
Özet
© 2020 authors. Published by the American Physical Society.The process e+e-→φη′ has been studied for the first time in detail using data sample collected with the BESIII detector at the BEPCII collider at center of mass energies from 2.05 to 3.08 GeV. A resonance with quantum numbers JPC=1 - is observed with mass M=(2177.5±4.8(stat)±19.5(syst))MeV/c2 and width Γ=(149.0±15.6(stat)±8.9(syst)) MeV with a statistical significance larger than 10σ, including systematic uncertainties. If the observed structure is identified with the φ(2170), then the ratio of partial width between the φη′ by BESIII and φη by BABAR is (ℬφηRΓeeR)/(ℬφη′RΓeeR)=0.23±0.10(stat)±0.18(syst), which is smaller than the prediction of the ss¯g hybrid models by several orders of magnitude.