Study of J /ψ →p p φ at BESIII STUDY of J /ψ →p p -φ at BESIII M. ABLIKIM et al.

  • M. Ablikim
  • , M. N. Achasov
  • , X. C. Ai
  • , O. Albayrak
  • , M. Albrecht
  • , D. J. Ambrose
  • , A. Amoroso
  • , F. F. An
  • , Q. An
  • , J. Z. Bai
  • , R. Baldini Ferroli
  • , Y. Ban
  • , D. W. Bennett
  • , J. V. Bennett
  • , M. Bertani
  • , D. Bettoni
  • , J. M. Bian
  • , F. Bianchi
  • , E. Boger
  • , I. Boyko
  • R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, H. Y. Chen, J. C. Chen, M. L. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, H. Muramatsu, R. Poling, BESIII Collaboration

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Using a data sample of 1.31×109 J/ψ events accumulated with the BESIII detector, the decay J/ψ→ppφ 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 evident enhancement near the pp-mass threshold, denoted as X(pp ), is observed, and the upper limit on the branching fraction of J/ψ→X(pp )φ→pp φ is determined to be B(J/ψ→X(pp )φ→pp φ)<2.1×10-7 at the 90% confidence level.

Original languageEnglish (US)
Article number052010
JournalPhysical Review D
Volume93
Issue number5
DOIs
StatePublished - Mar 18 2016

Bibliographical note

Publisher Copyright:
© 2016 American Physical Society.

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