# Joint Annual Meeting of ÖPG and SPS 2021

August 30, 2021 to September 3, 2021
University of Innsbruck
Europe/Zurich timezone

## 【324】Measurement of the Branching Fraction and Kinematic Variables of B0 -> D*- l+ nu_l using the Belle II data

Sep 1, 2021, 3:15 PM
15m
Room B

### Room B

Talk Nuclear, Particle- and Astrophysics (FAKT - TASK)

### Speaker

Daniel Dorner (Austrian Academy of Sciences (AT))

### Description

The goal of this analysis is to make a precise measurement of the magnitude of the element |$V_{cb}$| of the Cabibbo–Kobayashi–Maskawa matrix based on B-decays to the exclusive final state $D^{*-} l^+ \nu_l$. We will explain how this new measurement addresses several limitations of previous determinations and will help to clarify the experimental status of |$V_{cb}$|. The first steps are to measure the branching fraction and kinematic variables of the decay -- preliminary results will be presented. This analysis is based on the data recorded by the Belle II experiment at the SuperKEKB collider.

### Primary author

Daniel Dorner (Austrian Academy of Sciences (AT))