Speaker
Jon Bailey
(Seoul National University)
Description
The CKM matrix element |V_{cb}| can be extracted by combining experimentally determined branching fractions for B to D(*) ell nu decays with form factors from the lattice. While successful, the precision of this approach has been limited by heavy-quark discretization effects. An improved version of the Fermilab action, the Oktay-Kronfeld action, can be used to reduce heavy-quark discretization effects in calculations performed at the physical bottom and charm quark masses. Treating charm and bottom quarks as massive, we carry out tree-level improvement of the flavor-changing currents through third order in the momentum expansion.
Primary authors
Mr
Jaehoon Leem
(Seoul National University)
Jon Bailey
(Seoul National University)
Prof.
Weonjong Lee
(Seoul National University)
Mr
Yong-Chull Jang
(Seoul National University)
