A lattice NRQCD computation of the bag parameters for ΔB = 2 operators
N. Yamada, S. Hashimoto, K-I. Ishikawa, H. Matsufuru, T. Onogi
Abstract
We present an update of our NRQCD calculation of
B
B
at
β
=5.9 with increased statistics. We also discuss a calculation of
B
S
, which is relevant to the width difference in the
B
s
−
B
¯
s
mixing.