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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/186417
Measurement of the B ± production cross-section in pp collisions at √{s}=7 and 13 TeV
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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
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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. Measurement of the B ± production cross-section in pp collisions at √{s}=7 and 13 TeV. _Journal of High Energy Physics_. 2017. Vol. 2017, núm. 26, pàgs. 25-51. [consulta: 10 de gener de 2026]. ISSN: 1126-6708. [Disponible a: https://hdl.handle.net/2445/186417]