We present our methods to fit the two point correlators for light, strange, and charmed pseudoscalar meson physics with the highly improved staggered quark (HISQ) action. We make use of the least-squares fit including the full covariance matrix of the correlators and including Gaussian constraints on some parameters. We fit the correlators on a variety of the HISQ ensembles. The lattice spacing ranges from 0.15 fm down to 0.06 fm. The light sea quark mass ranges from 0.2 times the strange quark mass down to the physical light quark mass. The HISQ ensembles also include lattices with different volumes and with unphysical values of the strange quark mass. We use the results from this work to obtain our preliminary results of fD, fDs, fDs/fD, and ratios of quark masses presented in another talk [1].
@article{arxiv.1212.0613,
title = {Two-point Correlator Fits on HISQ Ensembles},
author = {A. Bazavov and C. Bernard and C. Bouchard and C. DeTar and D. Du and A. X. El-Khadra and J. Foley and E. D. Freeland and E. Gamiz and Steven Gottlieb and U. M. Heller and J. E. Hetrick and J. Kim and A. S. Kronfeld and J. Laiho and L. Levkova and M. Lightman and P. B. Mackenzie and E. T. Neil and M. Oktay and J. N. Simone and R. L. Sugar and D. Toussaint and R. S. Van de Water and R. Zhou},
journal= {arXiv preprint arXiv:1212.0613},
year = {2019}
}