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Title: | Measurement of the fraction of Υ(1S) originating from χb(1P) decays in pp collisions at s√=7 TeV |
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: | Hadrons Gran Col·lisionador d'Hadrons Teoria quàntica Gravitació Teoria quàntica de camps Hadrons Large Hadron Collider (France and Switzerland) Quantum theory Gravitation Quantum field theory |
Issue Date: | Sep-2012 |
Publisher: | Springer Verlag |
Abstract: | The production of χb(1P ) mesons in pp collisions at a centre-of-mass energy of 7 TeV is studied using 32 pb−1 of data collected with the LHCb detector. The χb(1P ) mesons are reconstructed in the decay mode χ b (1P ) → Υ (1S)γ → μ + μ −γ. The fraction of Υ (1S) originating from χb(1P ) decays in the Υ (1S) transverse momentum range 6 < pT Υ (1S) < 15 GeV/c and rapidity range 2.0 < y Υ (1S) < 4.5 is measured to be (20.7±5.7±2.1+2.7−5.4)% , where the first uncertainty is statistical, the second is systematic and the last gives the range of the result due to the unknown Υ (1S) and χb(1P) polarizations. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1007/JHEP11(2012)031 |
It is part of: | Journal of High Energy Physics, 2012, vol. 2012, num. 11, p. 31 |
URI: | http://hdl.handle.net/2445/58753 |
Related resource: | http://dx.doi.org/10.1007/JHEP11(2012)031 |
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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