Abstract
We measure the lifetime of the meson using a data sample of collected by the Belle II experiment running at the SuperKEKB asymmetric-energy collider. The lifetime is determined by fitting the decay-time distribution of a sample of decays. Our result is , where the first uncertainty is statistical and the second is systematic. This result is significantly more precise than previous measurements.
- Received 1 June 2023
- Accepted 14 September 2023
DOI:https://doi.org/10.1103/PhysRevLett.131.171803
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society