2009

Isospin breaking in 2+1 flavor QCD+QED

Zhou, Ran, Uno, Shunpei

Understand

The mass splittings in the pseudoscalar mesons are studied by combining 2+1 flavor domain wall fermion gauge configurations, generated by the RBC/UKQCD collaborations, and quenched, non-compact, lattice QED configurations.

  • We extract the QED low energy constants in SU(3) partially quenched chiral perturbation theory, up to next-to-leading order, and determine the non-degenerate u, d and s quark masses.
  • Systematic uncertainties due to chiral extrapolations are discussed.
  • The chiral symmetry breaking of domain wall fermions on the lattice and its effect in partially quenched chiral perturbation theory, including QED effects, is also investigated.

Built on

  • A. Duncan, E. Eichten and H. Thacker, Electromagnetic splittings and light quark masses in lattice QCD , Phys. Rev. Lett. 76

    1996

    Earlier work this paper cites.

  • A. Duncan, E. Eichten and R. Sedgewick, Phys. Rev. D 71

    2005

    Earlier work this paper cites.

  • S. Beane, K. Orginos and M. Savage Strong-isospin violation in the neutron proton mass difference from fully-dynamical lattice QCD and PQQCD Nucl. Phy. B. 768

    2007

    Earlier work this paper cites.

  • D.J. Antonio et. al

    2007

    Earlier work this paper cites.

Similar

Then

  • Amsler et al

    Original

    2008

    Later among the works it cites.

  • T.Izubuchi Studies of the QCD and QED effects on Isospin breaking PoS, KAON09

    2009

    Closest in time.

  • M. Hayakawa and S. Uno, QED in finite volume and finite size scaling effect on electromagnetic properties of hadrons arXiv:hep-ph/0804.2044

    2044

    Closest in time.

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