Study of J /ψ → pp̅φ at BESIII

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Study of J /ψ → pp̅φ at BESIII

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Title: Study of J /ψ → pp̅φ at BESIII
Author(s):
Ablikim, M.;
Achasov, M. N.;
Ai, X. C.;
Albayrak, O.;
Albrecht, M.;
Ambrose, D. J.;
Amoroso, A.;
Lou, Xinchou (UT Dallas);
BESIII Collaboration
Item Type: article
Keywords: Show Keywords
Abstract: Using a data sample of 1.31 × 10⁹ J/ψ events accumulated with the BESIII detector, the decay J/ψ → pp̅φ is studied via two decay modes, φ → K_S⁰K_L⁰ and φ → K⁺K⁻. The branching fraction of J/ψ → pp̅φ is measured to be ℬ(J/ψ → pp̅φ) = [5.23 ± 0.06(stat) ± 0.33(syst)] x 10⁻⁵, which agrees well with a previously published measurement, but with a significantly improved precision. No evident enhancement near the pp̅ mass threshold, denoted as X(pp̅), is observed, and the upper limit on the branching fraction of J/ψ → X(pp̅)φ → pp̅φ is determined to be ℬ(J/ψ → X(pp̅)φ → pp̅φ) < 2.1 × 10⁻⁷ at the 90% confidence level.
Publisher: American Physical Society
ISSN: 1550-7998 (ISSN)
Persistent Link: http://dx.doi.org/10.1103/PhysRevD.93.052010
http://hdl.handle.net/10735.1/5599
Bibliographic Citation: Ablikim, M., M. N. Achasov, X. C. Ai, O. Albayrak, et al. 2016. "Study of J /ψ →pp̅φ at BESIII." Physical Review D - Particles, Fields, Gravitation and Cosmology 93(5), doi:10.1103/PhysRevD.93.052010
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