Precise Measurement of B Meson Lifetimes with Hadronic Decay Final States
Belle collaboration: K.Abe, et al
TL;DR
This paper reports precise measurements of B meson lifetimes using hadronic decay modes with data from the Belle detector, providing important tests of the Standard Model's predictions for heavy meson behavior.
Contribution
It introduces a method to accurately measure B meson lifetimes through decay length differences in fully reconstructed hadronic decay modes.
Findings
Measured tau_B0bar = 1.554 ps with uncertainties
Measured tau_B- = 1.695 ps with uncertainties
Determined tau_B-/tau_B0bar ratio = 1.091 with uncertainties
Abstract
The lifetimes of the B0bar and B- mesons are extracted from 29.1/fb of data collected with the Belle detector at the KEK B-factory. A fit to the decay length differences of neutral and charged B meson pairs, measured in events where one of the B mesons is fully reconstructed in several hadronic modes, yields tau_B0bar = 1.554 +/- 0.030(stat) +/- 0.019(syst) ps, tau_B- = 1.695 +/- 0.026(stat) +/- 0.015(syst) ps, and tau_B-/tau_B0bar = 1.091 +/- 0.023(stat) +/- 0.014(syst).
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.