Testing mixed action approaches to meson spectroscopy with twisted mass sea quarks

Abstract

We explore and compare three mixed action setups with Wilson twisted mass sea quarks and different valence quark actions: (1) Wilson twisted mass, (2) Wilson twisted mass + clover and (3) Wilson + clover. Our main goal is to reduce lattice discretization errors in mesonic spectral quantities, in particular to reduce twisted mass parity and isospin breaking.

Comments: 7 pages, 3 figures, poster presentation at the 31st International Symposium on Lattice Field Theory LATTICE 2013