Mesurement of the B0 - anti-B0 Mixing Parameter Delta m_d using Semileptonic B0 Decays

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dc.creatorBelle Collaboration
dc.creatorHara, K.
dc.creatorHazumi, M.
dc.date2002-07-18
dc.date2002-12-22
dc.date.accessioned2026-07-07T12:01:48Z
dc.date.available2026-07-07T12:01:48Z
dc.descriptionWe 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^+νdecay 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.
dc.description10 pages, 3 figures, Published in Phys.Rev.Lett. 89, 251803 (2002)
dc.identifierhttps://arxiv.org/abs/hep-ex/0207045
dc.identifierhttp://arxiv.org/abs/hep-ex/0207045
dc.identifierPhys.Rev.Lett.89:251803,2002
dc.identifierdoi:10.1103/PhysRevLett.89.251803
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207222
dc.subjectHigh Energy Physics - Experiment
dc.titleMesurement of the B0 - anti-B0 Mixing Parameter Delta m_d using Semileptonic B0 Decays
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