Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/131824
Title: Studies of the decays B+ → p¯ph+ and observation of B+ → ¯Λ(1520)p
Author: Calvo Gómez, Míriam
Camboni, Alessandro
Comerma Montells, Albert
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Oyanguren Campos, Arantza de
Pérez-Calero Yzquierdo, Antonio
Picatoste Olloqui, Eduardo
Potterat, Cédric
Rives Molina, Vicente José
Ruiz, Hugo (Ruiz Pérez)
Ruiz Valls, Pablo
Vilasis-Cardona, Xavier
LHCb Collaboration
Keywords: Física de partícules
Experiments
Col·lisions (Física nuclear)
Particle physics
Experiments
Collisions (Nuclear physics)
Issue Date: 19-Sep-2013
Publisher: American Physical Society
Abstract: Dynamics and direct C P violation in three-body charmless decays of charged B mesons to a proton, an antiproton and a light meson (pion or kaon) are studied using data, corresponding to an integrated luminosity of 1.0     fb − 1 , collected by the LHCb experiment in p p collisions at a center-of-mass energy of 7 TeV. Production spectra are determined as a function of Dalitz-plot and helicity variables. The forward-backward asymmetry of the light meson in the p ¯ p rest frame is measured. No significant C P asymmetry in B + → p ¯ p K + decay is found in any region of the Dalitz plane. We present the first observation of the decay B + → ¯¯¯ Λ ( 1520 ) ( → K + ¯ p ) p near the K + ¯ p threshold and measure B ( B + → ¯¯¯ Λ ( 1520 ) p ) = ( 3.9 + 1.0 − 0.9 ( stat ) ± 0.1 ( syst ) ± 0.3 ( BF ) ) × 10 − 7 , where BF denotes the uncertainty on secondary branching fractions.
Note: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.88.052015
It is part of: Physical Review D, 2013, vol. 88, num. 5, p. 052015
URI: http://hdl.handle.net/2445/131824
Related resource: https://doi.org/10.1103/PhysRevD.88.052015
ISSN: 1550-7998
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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