Mesurement of the B0 - anti-B0 Mixing Parameter Delta m_d using Semileptonic B0 Decays
High Energy Physics - Experiment
2008-11-26 v2
Abstract
We present a measurement of the B^0-B^0bar mixing parameter Delta m_d using neutral B meson pairs in a 29.1 fb^{-1} data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^+e^- collider. We exclusively reconstruct one neutral B meson in the semileptonic B^0 \to D^{*-}\ell^+\nu decay mode and identify the flavor of the accompanying B meson from its decay products. From the distribution of the time intervals between the two flavor-tagged B meson decay points, we obtain Delta m_d = (0.494 +- 0.012 +- 0.015) ps^{-1}, where the first error is statistical and the second error is systematic.
Cite
@article{arxiv.hep-ex/0207045,
title = {Mesurement of the B0 - anti-B0 Mixing Parameter Delta m_d using Semileptonic B0 Decays},
author = {Belle Collaboration and K. Hara and M. Hazumi},
journal= {arXiv preprint arXiv:hep-ex/0207045},
year = {2008}
}
Comments
10 pages, 3 figures, Published in Phys.Rev.Lett. 89, 251803 (2002)