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Measurement of the J/psi pair production cross-section in pp collisions at root s = 13 TeV

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: The production cross-section of J/ψ pairs is measured using a data sample of pp collisions collected by the LHCb experiment at a centre-of-mass energy of √ s = 13 TeV, corresponding to an integrated luminosity of 279±11 pb−1 . The measurement is performed for J/ψ mesons with a transverse momentum of less than 10 GeV/c in the rapidity range 2.0 < y < 4.5. The production cross-section is measured to be 15.2 ± 1.0 ± 0.9 nb. The first uncertainty is statistical, and the second is systematic. The differential cross-sections as functions of several kinematic variables of the J/ψ pair are measured and compared to theoretical predictions.

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Journal of High Energy Physics, 2017, vol. 2017, num. 68, p. 9-46

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cc-by (c) Camboni, Alessandro et al., 2017

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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Large Hadron Collider (France and Switzerland)

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Measurement of the J/psi pair production cross-section in pp collisions at root s = 13 TeV