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2005-09-09

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/141358

Determination of |Vub| from Measurements of the Electron and Neutrino Momenta in Inclusive Semileptonic B Decays

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https://doi.org/10.1103/PhysRevLett.95.111801

Abstract

We present a determination of the Cabibbo-Kobayashi-Maskawa matrix element | V u b | based on the analysis of semileptonic B decays from a sample of 88 × 10 6 Υ ( 4 S ) decays collected with the BABAR detector at the SLAC PEP-II e + e − storage ring. Charmless semileptonic B decays are selected using measurements of the electron energy and the invariant mass squared of the electron-neutrino pair. We obtain | V u b | = ( 3.95 ± 0.26 + 0.58 − 0.42 ± 0.25 ) × 10 − 3 , where the errors represent experimental uncertainties, heavy quark parameter uncertainties, and theoretical uncertainties, respectively.

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Física de partícules, Experiments

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Particle physics, Experiments

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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GRAUGÉS POUS, Eugeni and BABAR Collaboration. Determination of |Vub| from Measurements of the Electron and Neutrino Momenta in Inclusive Semileptonic B Decays. Physical Review Letters. 2005. Vol. 95, num. 11, pags. 111801. ISSN 0031-9007. [consulted: 7 of August of 2026]. Available at: https://hdl.handle.net/2445/141358

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