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http://hdl.handle.net/2445/56475| Title: | First observation of the decay B+→π+μ+μ− |
| Author: | Abellan Beteta, Carlos Calvo Gómez, Míriam Camboni, Alessandro Comerma Montells, Albert Domingo Bonal, Francesc Garrido Beltrán, Lluís Gascón Fora, David Grabalosa Gándara, Marc Graciani Díaz, Ricardo Graugés Pous, Eugeni López Asamar, Elias Pérez-Calero Yzquierdo, Antonio Picatoste Olloqui, Eduardo Pie Valls, B. (Blai) Potterat, Cédric Puig Navarro, Albert Roselló, M. Ruiz, Hugo (Ruiz Pérez) Vázquez Gómez, Ricard Vilasis-Cardona, Xavier LHCb Collaboration |
| 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 |
| URI: | http://hdl.handle.net/2445/56475 |
| Related resource: | http://dx.doi.org/10.1007/JHEP12(2012)125 |
| ISSN: | 1126-6708 |
| 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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