# HET/RIKEN Seminar

## "Phenomenology of semileptonic B-meson decays with form factors from lattice QCD"

#### Presented by Ran Zhou, Fermilab

Wednesday, October 21, 2015, 2:00 pm — Small Seminar Room, Bldg. 510

The exclusive semileptonic $B$-meson decays $B\to K(\pi)\ell^+\ell^-$, $B \to K(\pi)\nu\bar\nu$, and $B\to\pi\tau\nu$ are used to extract the CKM elements and probe new physics beyond Standard Model. The errors of the form factors used to be an important source of the uncertainties in the theoretical predictions. Recent developments in lattice-QCD provide more accurate form factors and enable us to have better theoretical predictions. In this talk, I will present the latest lattice-QCD results of the form factors in the semileptonic $B$-meson decays processes. In addition, I will compare the theoretical predictions and recent experimental results. The tension between the Standard Model and semileptonic $B$-meson decay experimental data will be discussed.

Hosted by: Tomomi Ishikawa

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