• Open Access

Study of the reactions e+eπ+ππ0π0π0 and π+ππ0π0η at center-of-mass energies from threshold to 4.35 GeV using initial-state radiation

J. P. Lees et al. (BABAR Collaboration)
Phys. Rev. D 98, 112015 – Published 28 December 2018

Abstract

We study the processes e+eπ+ππ0π0π0γ and π+ππ0π0ηγ in which an energetic photon is radiated from the initial state. The data are collected with the BABAR detector at SLAC. About 14 000 and 4700 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469fb1. The invariant mass of the hadronic final state defines the effective e+e center-of-mass energy. From the mass spectra, the first precise measurement of the e+eπ+ππ0π0π0 cross section and the first measurement ever of the e+eπ+ππ0π0η cross section are performed. The center-of-mass energies range from threshold to 4.35 GeV. The systematic uncertainty is typically between 10% and 13%. The contributions from ωπ0π0, ηπ+π, and other intermediate states are presented. We observe the J/ψ and ψ(2S) in most of these final states and measure the corresponding branching fractions, many of them for the first time.

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  • Received 30 October 2018

DOI:https://doi.org/10.1103/PhysRevD.98.112015

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

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Vol. 98, Iss. 11 — 1 December 2018

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