Speaker
Mr
Yong-Chull Jang
(Seoul National University)
Description
We present updated results of the heavy-meson spectrum 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 by including complete dimension six and part of dimension seven bilinear improvement terms. Improvement terms are truncated by power counting of order $\Lambda^3/m^3$ for heavy-light system and $v^6$ for quarkonium. They suffice for tree-level matching to QCD of the given order from the power counting. To assess the improvement, we update previous numerical tests with heavy meson masses by generating new data that covers both charm and bottom quark mass regions on an ensemble of lattice spacing a = 0.12 fm. We update the analyses of the inconsistency parameter and the hyperfine splittings for the rest and kinetic masses.
Primary author
Mr
Yong-Chull Jang
(Seoul National University)
Co-authors
Prof.
Andreas Kronfeld
(Theoretical Physics Department, Fermilab)
Prof.
Carleton DeTar
(Department of Physics and Astronomy, University of Utah)
Dr
Jon Bailey
(Seoul National University)
Dr
Mehmet Oktay
(Department of Physics and Astronomy, University of Iowa)
Prof.
Weonjong Lee
(Seoul National University)
