Observation of J/ψpp¯a0(980) at BESIII

M. Ablikim et al. (BESIII Collaboration)
Phys. Rev. D 90, 052009 – Published 26 September 2014; Erratum Phys. Rev. D 91, 039901 (2015)

Abstract

Using 2.25×108J/ψ events collected with the BESIII detector at the BEPCII storage rings, we observe for the first time the process J/ψpp¯a0(980), a0(980)π0η with a significance of 6.5σ (3.2σ including systematic uncertainties). The product branching fraction of J/ψpp¯a0(980)pp¯π0η is measured to be (6.8±1.2±1.3)×105, where the first error is statistical and the second is systematic. This measurement provides information on the a0 production near threshold coupling to pp¯ and improves the understanding of the dynamics of J/ψ decays to four-body processes.

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  • Received 18 August 2014
  • Publisher error corrected 13 January 2015

DOI:https://doi.org/10.1103/PhysRevD.90.052009

© 2014 American Physical Society

Corrections

13 January 2015

Erratum

Publisher’s Note: Observation of J/ψpp¯a0(980) at BESIII [Phys. Rev. D 90, 052009 (2014)]

M. Ablikim et al. (BESIII Collaboration)
Phys. Rev. D 91, 039901 (2015)

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Vol. 90, Iss. 5 — 1 September 2014

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