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Title: Study of the reactions e + e π + π π 0 π 0 π 0 π 0 and π + π π 0 π 0 π 0 η at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation

Journal Article · · Physical Review D
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We study the processes e+e- → π+π-π0π0π0π0γ and π+π-π0π0π0ηγ in which an energetic photon is radiated from the initial state. The data were collected with the BABAR detector at the SLAC National Accelerator Laboratory. About 7300 and 870 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469 fb-1. The invariant mass of the hadronic final state defines the effective e+e- center-of-mass energy. The center-of-mass energies range from threshold to 4.5 GeV. From the mass spectra, the first ever measurements of the e+e- → π+π-π0π0π0π0 and the e+e- → π+π-π0π0π0η cross sections are performed. The contributions from ωπ0π0π0, ηπ+π-π0, ωη, 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.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
BABAR Collaboration; BABAR Collaborations
Grant/Contract Number:
AC02-05CH11231; AC02-76SF00515
OSTI ID:
1835643
Alternate ID(s):
OSTI ID: 1861058; OSTI ID: 1865897
Journal Information:
Physical Review D, Journal Name: Physical Review D Vol. 104 Journal Issue: 11; ISSN 2470-0010
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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