Measurement of quarkonium production at forward rapidity in pp collisions at √s=7 TeV
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Título: | Measurement of quarkonium production at forward rapidity in pp collisions at √s=7 TeV |
Autor/a: | ALICE Collaboration Armesto Pérez, Néstor González Ferreiro, Elena Pajares Vales, Carlos Salgado López, Carlos Alberto |
Centro/Departamento: | Universidade de Santiago de Compostela. Departamento de Física de Partículas Universidade de Santiago de Compostela. Instituto Galego de Física de Altas Enerxías (IGFAE) |
Data: | 2014 |
Editor: | Springer |
Cita bibliográfica: | Abelev, B., Adam, J., Adamová, D. et al. Measurement of quarkonium production at forward rapidity in pp collisions at √s=7 TeV. Eur. Phys. J. C 74, 2974 (2014). https://doi.org/10.1140/epjc/s10052-014-2974-4 |
Resumo: | 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. |
Versión do editor: | https://doi.org/10.1140/epjc/s10052-014-2974-4 |
URI: | http://hdl.handle.net/10347/21552 |
DOI: | 10.1140/epjc/s10052-014-2974-4 |
ISSN: | 1434-6044 |
E-ISSN: | 1434-6052 |
Dereitos: | © CERN for the benefit of the ALICE collaboration 2014. This article is published with open access at Springerlink.com. This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. Funded by SCOAP3 / License Version CC BY 4.0. |
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© CERN for the benefit of the ALICE collaboration 2014. This article is published with open access at Springerlink.com. This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. Funded by SCOAP3 / License Version CC BY 4.0.
© CERN for the benefit of the ALICE collaboration 2014. This article is published with open access at Springerlink.com. This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. Funded by SCOAP3 / License Version CC BY 4.0.