Hadron spectra and Delta_{mix} from overlap quarks on a HISQ sea

Abstract

We present results of our continuing study on mixed-action hadron spectra and decay constants using overlap valence quarks on MILC's 2+1+1 flavor HISQ gauge configurations. This study is carried out on three lattice spacings, with charm and strange masses tuned to their physical values, and with m_l/m_s = 1/5. We present results of an ongoing determination of the mixed-action parameter Delta_{mix}, which enters into chiral formulae for the masses and decay constants.

Comments: 7 pages, 4 figures. v2 updated discussion and references. Contribution to the 32nd International Symposium on Lattice Field Theory, 23-28 June 2014, Columbia University New York, NY, USA