We report on the inclusive production cross sec- tions of J/ψ , ψ (2S), Υ (1S), Υ (2S) and Υ (3S), measured at forward rapidity with the ALICE detector in pp colli- sions at a center-of-mass energy √s = 8 TeV. The analy- sis is based on data collected at the LHC and corresponds to an integrated luminosity of 1.23 pb−1. Quarkonia are reconstructed in the dimuon-decay channel. The differen- tial production cross sections are measured as a function of the transverse momentum pT and rapidity y, over the pT ranges0< pT <20GeV/cforJ/ψ,0< pT <12GeV/c for all other resonances, and for 2.5 < y < 4. The cross sections, integrated over pT and y, and assuming unpo- larized quarkonia, are σJ/ψ = 8.98 ± 0.04 ± 0.82 μb, σψ(2S) =1.23±0.08±0.22μb,σΥ(1S) =71±6±7nb, σΥ(2S) =26±5±4nbandσΥ(3S) =9±4±1nb, where the first uncertainty is statistical and the second one is systematic. These values agree, within at most 1.4σ , with measurements performed by the LHCb collaboration in the same rapidity range.

Inclusive quarkonium production at forward rapidity in pp collisions at √s = 8 TeV TeV / Adam, J., Adamová, D., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., Ahn, S.U., Aiola, S., Akindinov, A., Alam, S.N., Aleksandrov, D., Alessandro, B., Alexandre, D., Alfaro Molina, R., Alici, A., Alkin, A., Almaraz, J.R.M., Alme, J., Alt, T., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - ELETTRONICO. - 76:4(2016), pp. 184.1-184.13. [10.1140/epjc/s10052-016-3987-y]

Inclusive quarkonium production at forward rapidity in pp collisions at √s = 8 TeV TeV

CAMERINI, Paolo;FRAGIACOMO, ENRICO;LEA, RAMONA;LUPARELLO, GRAZIA;MARGAGLIOTTI, GIACOMO;PIANO, STEFANO;RUI, RINALDO;ŠULJIĆ, MILJENKO;Zaccolo, V.;
2016-01-01

Abstract

We report on the inclusive production cross sec- tions of J/ψ , ψ (2S), Υ (1S), Υ (2S) and Υ (3S), measured at forward rapidity with the ALICE detector in pp colli- sions at a center-of-mass energy √s = 8 TeV. The analy- sis is based on data collected at the LHC and corresponds to an integrated luminosity of 1.23 pb−1. Quarkonia are reconstructed in the dimuon-decay channel. The differen- tial production cross sections are measured as a function of the transverse momentum pT and rapidity y, over the pT ranges0< pT <20GeV/cforJ/ψ,0< pT <12GeV/c for all other resonances, and for 2.5 < y < 4. The cross sections, integrated over pT and y, and assuming unpo- larized quarkonia, are σJ/ψ = 8.98 ± 0.04 ± 0.82 μb, σψ(2S) =1.23±0.08±0.22μb,σΥ(1S) =71±6±7nb, σΥ(2S) =26±5±4nbandσΥ(3S) =9±4±1nb, where the first uncertainty is statistical and the second one is systematic. These values agree, within at most 1.4σ , with measurements performed by the LHCb collaboration in the same rapidity range.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2878821
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