# $B$ and $B_c$ mesons with NRQCD and Clover actions

## TL;DR

This paper reports on a lattice QCD study of B and B_c mesons using NRQCD and Clover actions, incorporating second-order corrections for the heavy quark and finite lattice spacing effects.

## Contribution

First implementation of heavy quark action and current with second-order non-relativistic corrections and finite lattice spacing effects in B meson simulations.

## Key findings

- Preliminary results on heavy-light spectrum and decay constants.
- Use of NRQCD at various heavy quark masses.
- Inclusion of second-order corrections in the heavy quark action.

## Abstract

We present preliminary results from our study of the heavy-light spectrum and decay constants. For the heavy quark, we use NRQCD at various masses around and above the $b$ quark mass. For the first time, the heavy quark action and the heavy-light current consistently include corrections at second order in the non-relativistic expansion, as well as the leading finite $a$ corrections. The light quarks are simulated using a tadpole-improved Clover action at various masses in the strange and $c$ quark region.