Electromagnetic Corrections in Staggered Chiral Perturbation Theory
arXiv:1011.3994
Abstract
To reduce errors in light-quark mass determinations, it is now necessary to consider electromagnetic contributions to light-meson masses. Calculations using staggered quarks and quenched photons are currently underway. Suitably-extended chiral perturbation theory is necessary to extrapolate the lattice data to the physical limit. Here we give (preliminary) results for light-meson masses using staggered chiral perturbation theory including electromagnetism, and discuss the extent to which quenched-photon simulations can improve quark-mass calculations.
7 pages, 2 figures, presented at Lattice 2010, June 14-19, 2010, Villasimius, Italy
References in corpus (17)
- Full nonperturbative QCD simulations with 2+1 flavors of improved staggered quarks
- Light pseudoscalar decay constants, quark masses, and low energy constants from three-flavor lattice QCD
- Quenched Chiral Logarithms
- Variants of fattening and flavor symmetry restoration
- Partially Quenched Gauge Theories and a Application to Staggered Fermions
- Flavor-Symmetry Restoration and Symanzik Improvement for Staggered Quarks
- Pion and Kaon masses in Staggered Chiral Perturbation Theory
- Physical Results from Unphysical Simulations
- Testing improved actions for dynamical Kogut-Susskind quarks
- Partially quenched chiral perturbation theory without
- Electromagnetic mass splittings of the low lying hadrons and quark masses from 2+1 flavor lattice QCD+QED
- Partially Quenched Chiral Perturbation Theory and the Replica Method
- Scaling tests of the improved Kogut-Susskind quark action
- Improved staggered quark actions with reduced flavour symmetry violations for lattice QCD
- Electromagnetic Corrections in Partially Quenched Chiral Perturbation Theory
- Results from the MILC collaboration's SU(3) chiral perturbation theory analysis
- Electromagnetic splittings of hadrons from improved staggered quarks in full QCD