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

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

Research output: Contribution to journalArticlepeer-review

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.
Original languageEnglish
Article number034517
Number of pages9
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume101
Issue number3
DOIs
Publication statusPublished - 24 Feb 2020

Keywords

  • hep-lat
  • hep-ph
  • nucl-th

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