Study of J /ψ →p p φ at BESIII STUDY of J /ψ →p p -φ at BESIII M. ABLIKIM et al.
Study of J /ψ →p p φ at BESIII STUDY of J /ψ →p p -φ at BESIII M. ABLIKIM et al.
Using a data sample of 1.31×109 J/ψ events accumulated with the BESIII detector, the decay J/ψ→pp¯ϕ is studied via two decay modes, ϕ→KS0KL0 and ϕ→K+K-. The branching fraction of J/ψ→pp¯ϕ is measured to be B(J/ψ→pp¯ϕ)=[5.23±0.06(stat)±0.33(syst)]×10-5, which agrees well with a previously published measurement, but with a significantly improved precision. No …