Speaker
Christopher Bouchard
(Ohio State)
Description
We discuss a calculation of the form factors for the flavor-changing charged current $b\to u$ and the flavor-changing neutral current $b\to d$ semileptonic decays, $B\to \pi\ell\nu$ and $B\to\pi\ell\ell$. HISQ light and NRQCD $b$ valence quarks are simulated on the MILC $N_f=2+1$ asqtad ensembles, including pion momenta that cover the full kinematic range of the decay. These data are analyzed using a hard pion ChPT motivated modified z-expansion developed in previous work. Preliminary results and phenomenological implications are discussed.
Primary author
Christopher Bouchard
(Ohio State)
Co-authors
Dr
Christopher Monahan
(University of Washington)
Prof.
Junko Shigemitsu
(Ohio State)
Prof.
Peter Lepage
(Cornell University)