Measurement of the Mass Difference m(B0) - m(B+)
High Energy Physics - Experiment
2010-04-12 v2
Abstract
Using 230 million B Bbar events recorded with the BABAR detector at the e+ e- storage rings PEP-II, we reconstruct approximately 4100 B0 to J/psi K+ pi- and 9930 B+ to J/psi K+ decays with J/psi to mu+ mu- and e+ e-. From the measured B-momentum distributions in the e+ e- rest frame, we determine the mass difference m(B0) - m(B+) = (+0.33 +- 0.05 +- 0.03) MeV/c^2.
Cite
@article{arxiv.0805.0497,
title = {Measurement of the Mass Difference m(B0) - m(B+)},
author = {The BABAR Collaboration and B. Aubert},
journal= {arXiv preprint arXiv:0805.0497},
year = {2010}
}
Comments
8 pages, 2 postscript figures, sumbmitted to Phys. Rev. D, Rapid Communications