Scientific Library of Tomsk State University

   E-catalog        

Normal view MARC view

Observation of the electromagnetic doubly OZI-suppressed decay J/ψ → фπ0 M. Ablikim, M.  N. Achasov, X.  C. Ai [et.al.]

Contributor(s): Ablikim, M | Achasov, M. N | Ai, X. C | Chelkov, G. A | Томский государственный университет Радиофизический факультет Научные подразделения РФФMaterial type: ArticleArticleSubject(s): физика высоких энергийGenre/Form: статьи в журналах Online resources: Click here to access online In: Physical Review D Vol. 91, № 11. P. 112001-1-112001-7Abstract: Using a sample of 1.31 billion J/ψ events accumulated with the BESIII detector at the BEPCII collider, we report the observation of the decay J/ψ→ϕπ0, which is the first evidence for a doubly Okubo–Zweig–Iizuka suppressed electromagnetic J/ψ decay. A clear structure is observed in the K+K− mass spectrum around 1.02  GeV/c2, which can be attributed to interference between J/ψ→ϕπ0 and J/ψ→K+K−π0 decays. Due to this interference, two possible solutions are found. The corresponding measured values of the branching fraction of J/ψ→ϕπ0 are [2.94±0.16(stat)±0.16(syst)]×10−6 and [1.24±0.33(stat)±0.30(syst)]×10−7.
Tags from this library: No tags from this library for this title. Log in to add tags.
No physical items for this record

Библиогр.: 24 назв.

Using a sample of 1.31 billion J/ψ events accumulated with the BESIII detector at the BEPCII collider, we report the observation of the decay J/ψ→ϕπ0, which is the first evidence for a doubly Okubo–Zweig–Iizuka suppressed electromagnetic J/ψ decay. A clear structure is observed in the K+K− mass spectrum around 1.02  GeV/c2, which can be attributed to interference between J/ψ→ϕπ0 and J/ψ→K+K−π0 decays. Due to this interference, two possible solutions are found. The corresponding measured values of the branching fraction of J/ψ→ϕπ0 are [2.94±0.16(stat)±0.16(syst)]×10−6 and [1.24±0.33(stat)±0.30(syst)]×10−7.

There are no comments on this title.

to post a comment.
Share