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Title: | Measurement of Upsilon production in collisions at root s=2.76 TeV |
Author: | Camboni, Alessandro Comerma-Montells, A. Garrido Beltrán, Lluís Graciani Díaz, Ricardo Graugés Pous, Eugeni Picatoste Olloqui, E. Potterat, C. Rives Molina, V. Ruiz, Hugo LHCb Collaboration |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | Apr-2014 |
Publisher: | Società Italiana di Fisica & Springer Verlag |
Abstract: | The production of Υ(1S), Υ(2S) and Υ(3S) mesons decaying into the dimuon final state is studied with the LHCb detector using a data sample corresponding to an integrated luminosity of 3.3 pb−1 collected in proton-proton collisions at a centreof-mass energy of √ s = 2.76 TeV. The differential production cross-sections times dimuon branching fractions are measured as functions of the Υ transverse momentum and rapidity, over the ranges pT < 15 GeV/c and 2.0 < y < 4.5. The total crosssections in this kinematic region, assuming unpolarised production, are measured to be σ (pp → Υ(1S)X) × B Υ(1S)→ µ +µ − = 1.111 ± 0.043 ± 0.044 nb, σ (pp → Υ(2S)X) × B Υ(2S)→ µ +µ − = 0.264 ± 0.023 ± 0.011 nb, σ (pp → Υ(3S)X) × B Υ(3S)→ µ +µ − = 0.159 ± 0.020 ± 0.007 nb, where the first uncertainty is statistical and the second systemat |
Note: | Reproducció del document publicat a: https://doi.org/10.1140/epjc/s10052-014-2835-1 |
It is part of: | European Physical Journal C, 2014, vol. 74, num. 4, p. 2835 |
URI: | http://hdl.handle.net/2445/185685 |
Related resource: | https://doi.org/10.1140/epjc/s10052-014-2835-1 |
ISSN: | 1434-6044 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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