Measurement of branching fractions for , , and
Journal Article
·
· Physical Review D
In this paper, using a data sample of 448 x 106 ψ(3686) events collected with the BESIII detector operating at the BEPCII storage ring, the decays ψ(3686) → γη and ψ(3686) → γπ0 are observed with a statistical significance of 7.3σ and 6.7σ, respectively. The branching fractions are measured to be β(ψ(3686) → γη) = (0.85 ± 0.18 ± 0.05) x 10-6 and β(ψ(3686) → γπ0) = (0.95 ± 0.16 ± 0.05) x 10-6. Finally, in addition, we measure the branching fraction of ψ(3686) → γη' to be β(ψ(3686) → γη') = (125.1 ± 2.2 ± 6.2) x 10-6, which represents an improvement of precision over previous results.
- Research Organization:
- George Washington Univ., Washington, DC (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Organization:
- BESIII Collaboration
- Grant/Contract Number:
- SC0016583; FG02-05ER41374; SC0010118; SC0010504; SC0012069
- OSTI ID:
- 1440863
- Alternate ID(s):
- OSTI ID: 1394703
- Journal Information:
- Physical Review D, Vol. 96, Issue 5; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 6 works
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