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Measurement of Υ production in pp collisions at √s = 2.76 TeV
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LHCb Collaboration (Including: Back, J. J., Blake, Thomas, Craik, Daniel, Dossett, D., Gershon, T. J., Kreps, Michal, Latham, Thomas, Pilar, T., Poluektov, Anton, Reid, Matthew M., Silva Coutinho, R., Wallace, Charlotte, Whitehead, M. (Mark) and Williams, M. P.). (2014) Measurement of Υ production in pp collisions at √s = 2.76 TeV. Physical Review D (Particles, Fields, Gravitation and Cosmology), Volume 74 (Number 4). Article number 2835. doi:10.1140/epjc/s10052-014-2835-1 ISSN 1434-6052.
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Official URL: http://dx.doi.org/10.1140/epjc/s10052-014-2835-1
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 3.3pb-1 collected in proton-proton collisions at a centre-of-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 cross-sections in this kinematic region, assuming unpolarised production, are measured to be (Formula presented.) where the first uncertainty is statistical and the second systematic.
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