Speaker
Robert Mawhinney
(Columbia University)
Description
We have performed global fits of pseudoscalar masses and decay constants,
from a variety of RBC-UKQCD domain wall fermion ensembles, to $SU(3)$
partially quenched chiral perturbation theory at NNLO. We report
values for 9 NLO and 10 linearly independent combinations of NNLO
partially quenched low energy constants, which we compare to other
lattice and phenomenological determinations. We discuss the convergence
of the expansion and use our large set of low energy constants to
make predictions for mass and decay constant splittings due to QCD
isospin breaking effects. We also discuss S-wave $K \pi$ scattering
lengths.
Primary author
Robert Mawhinney
(Columbia University)
Co-author
Mr
David Murphy
(Columbia University)
