Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/56475
Title: First observation of the decay B+→π+μ+μ−
Author: LHCb Collaboration
Abellan Beteta, Carlos
Calvo Gómez, M.
Camboni, Alessandro
Comerma Montells, Albert
Domingo Bonal, F.
Garrido Beltrán, Lluís
Gascón Fora, David
Grabalosa Gándara, Marc
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Lopez Asamar, E.
Pérez-Calero Yzquierdo, Antonio
Picatoste Olloqui, Eduardo
Pie Valls, B. (Blai)
Potterat, Cédric
Puig Navarro, Albert
Roselló, M.
Ruiz, Hugo (Ruiz Pérez)
Vázquez Gómez, R.
Vilasis-Cardona, X.
Keywords: Teoria quàntica de camps
Partícules (Física nuclear)
Hadrons
Física nuclear
Detectors de radiació
Quantum field theory
Particles (Nuclear physics)
Hadrons
Nuclear physics
Nuclear counters
Issue Date: Dec-2012
Publisher: Springer Verlag
Abstract: A discovery of the rare decay B + → π + μ + μ − is presented. This decay is observed for the first time, with 5.2 σ significance. The observation is made using pp collision data, corresponding to an integrated luminosity of 1.0 fb−1, collected with the LHCb detector. The measured branching fraction is (2.3 ± 0.6 (stat.) ± 0.1 (syst.))×10−8, and the ratio of the B + → π + μ + μ − and B + → K + μ + μ − branching fractions is measured to be 0.053 ± 0.014 (stat.) ± 0.001 (syst.).
Note: Reproducció del document publicat a: http://dx.doi.org/10.1007/JHEP12(2012)125
It is part of: Journal of High Energy Physics, 2012, vol. 1212 , num. 125, p. 1-18
Related resource: http://dx.doi.org/10.1007/JHEP12(2012)125
URI: http://hdl.handle.net/2445/56475
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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