The Spectrum from Lattice NRQCD

Abstract

I review recent results for heavy-heavy spectroscopy using Lattice NRQCD. The NRQCD collaboration reports that spin-independent splittings for the ${\rm Y}$ are scaling for a sensible range of $\beta$ values in the quenched approximation. Spin-dependent splittings are not, if the scale is set by spin-independent splittings. Results which include higher order spin-dependent relativistic and discretisation corrections show differences from previous (NRQCD collaboration) results without these. As expected, the differences are small for ${\rm Y}$ but rather large for charmonium. New results from the SESAM collaboration for ${\rm Y}$ spectroscopy on configurations with Wilson dynamical fermions show good agreement with previous results on HEMCGC configurations with staggered dynamical fermions.

10 pages, Latex. 10 figures, 7 in postscript. Review for Tsukuba workshop

References in corpus (3)

• $B_c$ Spectroscopy from Lattice QCD
• The Heavy-Light Spectrum from Lattice NRQCD
• Errors in Lattice Extractions of alpha_s Due to Use of Unphysical Pion Masses

Cited by in corpus (8)

• Light Meson Spectroscopy
• Effective Functional Form of Regge Trajectories
• Comparative Study of full QCD Hadron Spectrum and Static Quark Potential with Improved Actions
• Scaling of the Upsilon Spectrum in Lattice NRQCD
• B meson leptonic decay constant with quenched lattice NRQCD
• Tadpole renormalization and relativistic corrections in lattice NRQCD
• Upsilon Spectrum from NRQCD with Improved Action
• O(1/M^3) effects for heavy-light mesons in lattice NRQCD