Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/56385
Title: First evidence for the two-body charmless baryonic decay
Author: LHCb Collaboration
Calvo Gómez, M.
Camboni, Alessandro
Comerma Montells, Albert
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Oyanguren, A.
Pérez-Calero Yzquierdo, Antonio
Picatoste Olloqui, Eduardo
Potterat, Cédric
Rives Molina, Vicente José
Ruiz, Hugo (Ruiz Pérez)
Ruiz Valls, P.
Vilasis-Cardona, X.
Keywords: Cromodinàmica quàntica
Partícules (Física nuclear)
Física nuclear
Barions
Quantum chromodynamics
Particles (Nuclear physics)
Nuclear physics
Baryons
Issue Date: Oct-2013
Publisher: Springer Verlag
Abstract: The results of a search for the rare two-body charmless baryonic decays TeX and TeX are reported. The analysis uses a data sample, corresponding to an integrated luminosity of 0.9 fb−1, of pp collision data collected by the LHCb experiment at a centre-of-mass energy of 7 TeV. An excess of TeX candidates with respect to background expectations is seen with a statistical significance of 3.3 standard deviations. This is the first evidence for a two-body charmless baryonic B 0 decay. No significant TeX signal is observed, leading to an improvement of three orders of magnitude over previous bounds. If the excess events are interpreted as signal, the 68.3% confidence level intervals on the branching fractions are $ TeX $ where the first uncertainty is statistical and the second is systematic.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1007/JHEP10(2013)005
It is part of: Journal of High Energy Physics, 2013, vol. 10, num. 5, p. 1-17
Related resource: http://dx.doi.org/10.1007/JHEP10(2013)005
URI: http://hdl.handle.net/2445/56385
ISSN: 1126-6708
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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