Measurement of quarkonium production at forward rapidity in pp collisions at √s = 7 TeV (CROSBI ID 213472)
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Podaci o odgovornosti
Abelev, B. ... ; Antičić, Tome ; ... ; Gotovac, Sven ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Šuša, Tatjana ; ... ; Vicković, Linda ; ... ; Zyzak, M.
engleski
Measurement of quarkonium production at forward rapidity in pp collisions at √s = 7 TeV
The inclusive production cross sections at forward rapidity of J/ψ, ψ(2S), ϒ(1S) and ϒ(2S) are measured in pp collisions at √s = 7 TeV with the ALICE detector at the LHC. The analysis is based on a data sample corresponding to an integrated luminosity of 1.35 pb−1. Quarkonia are reconstructed in the dimuon-decay channel and the signal yields are evaluated by fitting the μ+μ− invariant mass distributions. The differential production cross sections are measured as a function of the transverse momentum pT and rapidity y, over the ranges 0 < pT < 20 GeV/c for J/ψ, 0 < pT < 12 GeV/c for all other resonances and for 2.5 < y < 4. The measured cross sections integrated over pT and y, and assuming unpolarized quarkonia, are: σJ/ψ = 6.69 ± 0.04 ± 0.63 µb, σψ(2S) = 1.13 ± 0.07 ± 0.19 µb, σϒ(1S) = 54.2 ± 5.0 ± 6.7 nb and σϒ(2S) = 18.4 ± 3.7 ± 2.9 nb, where the first uncertainty is statistical and the second one is systematic. The results are compared to measurements performed by other LHC experiments and to theoretical models.
ALICE; 7 TeV; pp; Quarkonium
The ALICE Collaboration.
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Podaci o izdanju
74 (8)
2014.
2974-1-2974-21
objavljeno
1434-6044
10.1140/epjc/s10052-014-2974-4