Heavy Meson Spectrum Tests of the Oktay-Kronfeld Action

Yong-Chull Jang, Jon Bailey, Weonjong Lee, Carleton DeTar, Andreas Kronfeld, Mehmet B. Oktay
2015 Proceedings of The 32nd International Symposium on Lattice Field Theory — PoS(LATTICE2014)   unpublished
We present heavy-meson spectrum results obtained using the Oktay-Kronfeld (OK) action on MILC asqtad lattices. The OK action was designed to improve the heavy-quark action of the Fermilab formulation, such that heavy-quark discretization errors are reduced. The OK action includes dimension-6 and -7 operators necessary for tree-level matching to QCD through order O(Λ 3 /m 3 Q ) for heavy-light mesons and O(v 6 ) for quarkonium, or, equivalently, through O(a 2 ) with some O(a 3 ) terms with
more » ... ) terms with Symanzik power counting. To assess the improvement, we extend previous numerical tests with heavy-meson masses by analyzing data generated on a finer (a ≈ 0.12 fm) lattice with the correct tadpole factors for the c 5 term in the action. We update the analyses of the inconsistency parameter and the hyperfine splittings for the rest and kinetic masses.
doi:10.22323/1.214.0097 fatcat:exiswwovljffniyoexp43jff24