State mixing and masses of the π0, η and η′ mesons from nf=1+1+1 lattice QCD+QED

CSSM QCDSF UKQCD Collaborations

Research output: Contribution to journalArticlepeer-review

Abstract

We present a lattice analysis of the light pseudoscalar mesons with consideration for the mixing between the flavor-neutral states π0, η and η′. We extract the masses and flavor compositions of the pseudoscalar meson nonet in nf=1+1+1 lattice QCD+QED around an SU(3)-flavor symmetric point, and observe flavor-symmetry features of the extracted data, along with preliminary extrapolation results for the flavor compositions at the physical point. A key result of this work is the observed mass splitting between the π0 and η on our ensembles, which is found to exhibit behavior that is simply related to the corresponding flavor compositions.
Original languageEnglish
Article number114514
Pages (from-to)1-9
Number of pages9
JournalPhysical Review D
Volume104
Issue number11
DOIs
Publication statusPublished - 29 Dec 2021

Keywords

  • hep-lat
  • hep-ph
  • nucl-th

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