# $B_c$ and $\Upsilon$ Spectra from Lattice NRQCD - Results at $\beta$ = 5.7

## TL;DR

This paper presents updated lattice NRQCD calculations of heavy-heavy meson spectra at different lattice spacings, including new predictions for the $B_c$ meson, and compares results between two beta values.

## Contribution

It provides the first lattice predictions for the $B_c$ spectrum and compares heavy-heavy spectra at different lattice spacings using NRQCD.

## Key findings

- Updated heavy-heavy spectrum results at $eta$=5.7
- First lattice predictions for $B_c$ spectrum
- Scaling comparison with $eta$=6.0 results

## Abstract

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