$B_c$ and ${\rm Y}$ Spectra from Lattice NRQCD - Results at $\beta$ = 5.7

Abstract

We update our results for the heavy-heavy spectrum at $\beta$ = 5.7, using NRQCD. This includes a scaling comparison with the ${\rm Y}$ spectrum at $\beta$ = 6.0 and first lattice predictions for the $B_c$ spectrum.

Comments: 4 pages of uuencoded latex. Uses espcrc2.sty. Contribution to LAT95