## Formulation of the OK action

We implement numerically the Fermilab formulation of the OK action for the heavy quarks such as bottom and charm quarks on the lattice. The key issue is to determine the coefficients of the higher order terms in a reliable way. We will take over this challenging problem to calculate the V_{cb}with extremely high precision.

## B meson mass

Once we formulate the heavy quarks on the lattice using the OK action, we will calculate the B meson spectrum to check the reliability of the OK action formalism.## f_{B}

We will also calculate the B meson decay constants f_{B}.

## V_{cb}

Our main mission of this project is to calcualte V_{cb}with extremely high precision.