2012/02/29 by The LHCb Collaboration, R. Aaij, C. Abellán Beteta +603
Chemistry · Physics and Astronomy · #Analytical Chemistry (journal) #Branching fraction #Chemistry #Hadron #High-Energy Particle Collisions Research #Invariant mass #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Quantum Chromodynamics and Particle Interactions #Quarkonium #Rapidity #hep-ex
paper · pdf · doi:10.1140/epjc/s10052-012-2025-y
published as The European Physical Journal C - Particles and Fields Volume 72, Number 6 (2012), 2025 · 22 pages, 7 figures
openalex publication_date 2012/06/01 · arxiv created 2012/06/15 · arxiv updated 2013/05/02 · openalex created_date 2016/09/16 · openalex updated_date 2026/08/06
The production of (1S), (2S) and (3S) mesons in proton-proton collisions at the centre-of-mass energy of s = 7 TeV is studied with the LHCb detector. The analysis is based on a data sample of 25 pb -1 collected at the Large Hadron Collider. The mesons are reconstructed in the decay mode + -and the signal yields are extracted from a fit to the + -invariant mass distributions. The differential production cross-sections times dimuon branching fractions are measured as a function of the transverse momentum p T and rapidity y, over the range p T < 15 GeV/c and 2.0 < y < 4.5. The cross-sections times branching fractions, integrated over these kinematic ranges, are measured to be pp (1S)X B (1S) + - = 2.29 0.01 0.10 +0.19 -0.37 nb, pp (2S)X B (2S) + - = 0.562 0.007 0.023 +0.048 -0.092 nb, pp (3S)X B (3S) + - = 0.283 0.005 0.012 +0.