Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/113866
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, C.
Picatoste Olloqui, Eduardo
Rives Molina, Vicente José
Badalov, A.
Aaij, R.
Abellan Beteta, Carlos
Adeva, B.
Adinolfi, M.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
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
Related resource: https://doi.org/10.1103/PhysRevD.93.092007
URI: http://hdl.handle.net/2445/113866
ISSN: 1550-7998
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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