Angular analysis of decays reconstructed in 2019, 2020, and 2021 Belle~II data
Sumitted to PubDB: 2022-06-24
Category: Conference papers and plots, Visibility: Public
Tags:
-
Authors |
Mirco Dorigo,
Eldar Ganiev,
Riccardo Manfredi,
Sebastiano Raiz,
Diego Tonelli
|
Date |
June 23, 2022 |
Belle II Number |
BELLE2-CONF-PH-2022-005 |
Abstract |
We report on a Belle II measurement of the branching fraction~(), longitudinal polarization fraction ~(), and \CP~asymmetry~ of decays. We reconstruct decays in a sample of SuperKEKB electron-positron collisions collected by the Belle II experiment in 2019, 2020, and 2021 at the (4S) resonance and corresponding to 190\,fb of integrated luminosity. We fit the distributions of the difference between expected and observed candidate energy, continuum-suppression variable, dipion masses, and decay angles of the resulting samples, to determine a signal yield of events. The signal yields are corrected for efficiencies determined from simulation and control data samples to obtain The results agree with known determinations. This is the first measurement of in decays reported by Belle II. |
Files