Karlsruhe 2024 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
T: Fachverband Teilchenphysik
T 22: Flavour physics 1
T 22.6: Talk
Monday, March 4, 2024, 17:15–17:30, Geb. 30.41: HS 4
Measurement of the branching ratios of the decays B0 → D−K+ and B0 → D*−K+ at the Belle II experiment — •Zeynep Su Selcuk, Sviatoslav Bilokin, and Thomas Kuhr — Ludwig-Maximilians-Universität München
The theoretical predictions for the decay B0 → D(*)−K+ have been greatly improved recently and show significant deviations from the current experimental measurements. These deviations may be caused by systematic shifts in the previous experimental measurements or can even indicate contributions from the New Physics. Therefore, the goal of the presented analysis is to investigate this situation by measuring the branching fractions for the decay modes B0 → D−K+ and B0 → D*−K+ using Belle II data with an integrated luminosity of 362 fb−1. In this analysis particle identification is done using the neural network variables, which leads to enhanced signal efficiency and improved background suppression with respect to the previous analyses at Belle or Belle II.
Keywords: Belle II; B-physics; Branching ratio; B to DK; B to D*K