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Title: | Measurement of the mass and lifetime of the Ωb- baryon |
Author: | Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Badalov, Alexey Abellan Beteta, Carlos LHCb Collaboration |
Keywords: | Barions Hadrons Propietats de la matèria Massa (Física) Baryons Hadrons Properties of matter Mass (Physics) |
Issue Date: | 19-May-2016 |
Publisher: | American Physical Society |
Abstract: | A proton-proton collision data sample, corresponding to an integrated luminosity of 3 fb−1 collected by LHCb at s√=7 and 8 TeV, is used to reconstruct 63±9 Ω−b→Ω0cπ−, Ω0c→pK−K−π+ decays. Using the Ξ−b→Ξ0cπ−, Ξ0c→pK−K−π+ decay mode for calibration, the lifetime ratio and absolute lifetime of the Ω−b baryon are measured to be τΩ−bτΞ−bτΩ−b=1.11±0.16±0.03,=1.78±0.26±0.05±0.06 ps, where the uncertainties are statistical, systematic and from the calibration mode (for τΩ−b only). A measurement is also made of the mass difference, mΩ−b−mΞ−b, and the corresponding Ω−b mass, which yields mΩ−b−mΞ−bmΩ−b=247.4±3.2±0.5 MeV/c2,=6045.1±3.2±0.5±0.6 MeV/c2. These results are consistent with previous measurements. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.93.092007 |
It is part of: | Physical Review D, 2016, vol. 93, num. 9, p. 92007 |
URI: | http://hdl.handle.net/2445/113866 |
Related resource: | https://doi.org/10.1103/PhysRevD.93.092007 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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