Talk presented by Norikazu Yamada

Parallel Session: Heavy Quarks I

Tuesday June 29th, 15.30 - 15.50, Pacinotti Room

Authors: N. Yamada, S. Hashimoto, K-I. Ishikawa, H. Matsufuru and T. Onogi

A lattice NRQCD computation of the $B^0$-$\bar{B}^0$ mixing

Abstract: We present an updated analysis of the lattice NRQCD calculation of $B_B$ at $\beta=5.9$ with increased statistics after Lattice 98. We found a small but non-zero heavy quark mass dependence of $B_B(m_b)$. We give a possible explanation for this mass dependence. We also give a discussion about the systematic errors in our calculation.

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