Measurement of the Mass Difference m(B0) - m(B+)
arXiv:0805.0497 · doi:10.1103/PhysRevD.78.011103
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.
8 pages, 2 postscript figures, sumbmitted to Phys. Rev. D, Rapid Communications
References in corpus (5)
- Big-Bang nucleosynthesis (Particle Data Group mini-review)
- The Cosmological Parameters 2006
- A Measurement of the Total Width, the Electronic Width, and the Mass of the Upsilon(10580) Resonance
- Isospin breaking in the yield of heavy meson pairs in e+e- annihilation near threshold
- Strong and Electromagnetic Mass Splittings in Heavy Mesons