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Electromagnetic contribution to Σ-Λ mixing using lattice QCD+QED

Research output: Contribution to journalArticle

  • Z. R. Kordov
  • R. Horsley
  • Y. Nakamura
  • H. Perlt
  • P. E. L. Rakow
  • G. Schierholz
  • H. Stüben
  • R. D. Young
  • J. M. Zanotti

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https://journals.aps.org/prd/abstract/10.1103/PhysRevD.101.034517
Original languageEnglish
Article number034517
Number of pages9
JournalPhysical Review D
Volume101
Issue number3
DOIs
Publication statusPublished - 24 Feb 2020

Abstract

Mixing in the Σ0-Λ0 system is a direct consequence of broken isospin symmetry and is a measure of both isospin-symmetry breaking as well as general SU(3)-flavour symmetry breaking. In this work we present a new scheme for calculating the extent of Σ0-Λ0 mixing using simulations in lattice QCD+QED and perform several extrapolations that compare well with various past determinations. Our scheme allows us to easily contrast the QCD-only mixing case with the full QCD+QED mixing.

    Research areas

  • hep-lat, hep-ph, nucl-th

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