Observation of f1(1285)→π+π-π+π- in radiative J ψ decays
Journal
Physics Letters B
Journal Volume
278
Journal Issue
4
Pages
495-498
Date Issued
1992
Author(s)
Bolton, T. et al. (Mark III Collaboration)
Abstract
We present an analysis of J ψ→γf1(1285), f1(1285)→π+π-π+π-, using the Mark III detector at SPEAR, based on 5.8 × 106 produced J ψ events. We measure B( J ψ→γf1(1285), f1(1285)→π+π-π+π-)=(4.8±1.3±0.9) × 10-5. We obtain a new measurement of the absolute branching ratio of J ψ→γf1(1285). The mixing angle of the f1(1285) and the f1(1420) in the 1++ nonet is determined. © 1992.
Type
journal article