Preliminary BABAR results on B0 mixing with dileptons and on lifetime with partially reconstructed B0 decays

Details Preliminary BABAR results on B0 mixing with dileptons and on lifetime with partially reconstructed B0 decays Preliminary BABAR results on B0 mixing with dileptons and on lifetime with partially reconstructed B0 decays

2000-11-03

arxiv.org/abs/hep-ex/0011010v1

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 2 postscript figures, contributed paper to ICHEP2000

Scientific paper

With an integrated luminosity of 7.7 fb-1 collected on resonance by BABAR at the PEP-II asymmetric B Factory, we measure the difference in mass between the neutral B eigenstates, Delta(m_d), to be (0.507+/-0.015+/-0.022)x 10^{12} hbar s^{-1} with dileptons events and present preliminary results for the B^0 lifetime, tau(B^0) = 1.55+/-0.05+/-0.07 ps and tau(B^0) = 1.62+/-0.02+/-0.09 ps obtained from partial reconstruction of the two B^0 decay processes respectively B^0-->D^{*-}pi^+ and B^0-->D^{*-} l^+ nu_l.

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