η transition form factor; A combined analysis of space- and time-like experimental data through rational approximants

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Abstract

A combined analysis of the space- and time-like experimental data for the η transition form factor is performed in a model-independent way by means of rational approximants. The recent measurement of the e+ e- invariant mass spectrum of the η → e+ e- γ decay provided by the A2 Collaboration allowed us to extract the most precise and up-to-date slope and curvature parameters of the form factor. The impact of this new analysis on the η-η' mixing parameters and the VPγ couplings is also discussed.
Original languageEnglish
Pages (from-to)462-469
JournalJournal of University of Science and Technology of China
Volume46
Issue number6
DOIs
Publication statusPublished - 1 Jun 2016

Keywords

  • Rational approximants
  • Slope and curvature parameters;η-ηmixing
  • Space- and time-like data analysis
  • V→Pγradiative decays
  • ηtransition form factor

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