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 3.3 pb^−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 p_T < 15 GeV/c and 2.0 < y < 4.5. The total cross-sections in this kinematic region, assuming unpolarised production, are measured to be σ(pp → Υ(1S) X) × B(Υ(1S) → μ+ μ−) = 1.111 ± 0.043 ± 0.044 nb, σ(pp → Υ(2S) X) × B(Υ(2S) → μ+ μ−) = 0.264 ± 0.023 ± 0.011 nb, σ(pp → Υ(3S) X) × B(Υ(3S) → μ+ μ−) = 0.159 ± 0.020 ± 0.007 nb, where the first uncertainty is statistical and the second systematic.

Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Albrecht, J., et al. (2014). Measurement of Υ Production in pp Collisions at √s = 2.76 TeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 74(4), 1-11 [10.1140/epjc/s10052-014-2835-1].

Measurement of Υ Production in pp Collisions at √s = 2.76 TeV

CARBONE, ANGELO;A. Di Canto;GALLI, DOMENICO;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2014

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 3.3 pb^−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 p_T < 15 GeV/c and 2.0 < y < 4.5. The total cross-sections in this kinematic region, assuming unpolarised production, are measured to be σ(pp → Υ(1S) X) × B(Υ(1S) → μ+ μ−) = 1.111 ± 0.043 ± 0.044 nb, σ(pp → Υ(2S) X) × B(Υ(2S) → μ+ μ−) = 0.264 ± 0.023 ± 0.011 nb, σ(pp → Υ(3S) X) × B(Υ(3S) → μ+ μ−) = 0.159 ± 0.020 ± 0.007 nb, where the first uncertainty is statistical and the second systematic.
2014
Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Albrecht, J., et al. (2014). Measurement of Υ Production in pp Collisions at √s = 2.76 TeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 74(4), 1-11 [10.1140/epjc/s10052-014-2835-1].
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/278120
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