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Title: | Measurement of the B ± production cross-section in pp collisions at √{s}=7 and 13 TeV |
Author: | Alfonso Albero, Alejandro Coquereau, Samuel Fernandez, G. Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Molina, V. R. Calvo Gomez, M. Camboni, Alessandro Gironella Gironell, Pere Vazquez Gomez, R. LCHb Collaboration |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | Dec-2017 |
Publisher: | Springer Verlag |
Abstract: | The production of B ± mesons is studied in pp collisions at centre-of-mass energies of 7 and 13 TeV, using B ± → J/ ψ K ± decays and data samples corresponding to 1.0 fb-1 and 0.3 fb-1, respectively. The production cross-sections summed over both charges and integrated over the transverse momentum range 0 < p T < 40 GeV/ c and the rapidity range 2.0 < y < 4.5 are measured to be σ ( pp\to {B}^{± }X,√{s}=7 TeV)=43.0± 0.2± 2.5± 1.7 μ b, σ ( pp\to {B}^{± }X,√{s}=13 TeV)=86.6± 0.5± 5.4± 3.4 μ b, where the first uncertainties are statistical, the second are systematic, and the third are due to the limited knowledge of the B ± → J/ ψ K ± branching fraction. The ratio of the cross-section at 13 TeV to that at 7 TeV is determined to be 2.02 ± 0.02 (stat) ± 0.12 (syst). Differential cross-sections are also reported as functions of p T and y. All results are in agreement with theoretical calculations based on the state-of-art fixed next-to-leading order quantum chromodynamics |
Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP12(2017)026 |
It is part of: | Journal of High Energy Physics, 2017, vol. 2017, num. 26, p. 25-51 |
URI: | http://hdl.handle.net/2445/186417 |
Related resource: | https://doi.org/10.1007/JHEP12(2017)026 |
ISSN: | 1126-6708 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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