Inclusive quarkonium production in pp collisions at √s = 5.02 TeV
This article reports on the inclusive production cross section of several quarkonium states, J/ψ, ψ(2S), Υ(1S), Υ(2S), and Υ(3S), measured with the ALICE detector at the LHC, in pp collisions at √s = 5.02 TeV. The analysis is performed in the dimuon decay channel at forward rapidity (2.5 < y <...
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
23 January 2023
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| In: |
The European physical journal. C, Particles and fields
Year: 2023, Jahrgang: 83, Heft: 1, Pages: 1-27 |
| ISSN: | 1434-6052 |
| DOI: | 10.1140/epjc/s10052-022-10896-8 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1140/epjc/s10052-022-10896-8
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| Verfasserangaben: | ALICE Collaboration |
MARC
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| 245 | 1 | 0 | |a Inclusive quarkonium production in pp collisions at √s = 5.02 TeV |c ALICE Collaboration |
| 246 | 3 | 3 | |a Inclusive quarkonium production in pp collisions at square root s = 5.02 TeV |
| 264 | 1 | |c 23 January 2023 | |
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| 500 | |a ALICE Collaboration: S. Acharya, V. Anguelov, A. Berdnikova, L. Bergmann, M.C. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim, M. Kim, M. Kroesen, A. Nath, Y.C. Pachmayer, K. Reygers, R. Schicker, A. Schmah, G. Skorodumovs, J. Stachel, S. Stiefelmaier, M. Völkl, B. Windelband, A. Yuncu [und viele weitere] | ||
| 500 | |a Gesehen am 28.04.2023 | ||
| 520 | |a This article reports on the inclusive production cross section of several quarkonium states, J/ψ, ψ(2S), Υ(1S), Υ(2S), and Υ(3S), measured with the ALICE detector at the LHC, in pp collisions at √s = 5.02 TeV. The analysis is performed in the dimuon decay channel at forward rapidity (2.5 < y < 4). The integrated cross sections and transverse-momentum (pT) and rapidity (y) differential cross sections for J/ψ, ψ(2S), Υ(1S) and the ψ(2S)-to-J/ψ cross section ratios are presented. The integrated cross sections, assuming unpolarized quarkonia, are: σJ/ψ ( pT < 20 GeV/c) = 5.88 ± 0.03 ± 0.34 μb, σψ(2S) ( pT < 12 GeV/c) = 0.87 ± 0.06 ± 0.10 μb, σΥ(1S) ( pT < 15 GeV/c) = 5.5 ± 3.9 ± 3.5 nb, σΥ(2S) ( pT < 15 GeV/c) = 22.4 ± 3.2 ± 2.7 nb, and σΥ(3S) ( pT < 15 GeV/c) = 4.9 ± 2.2 ± 1.0 nb, where the first (second) uncertainty is the statistical (systematic) one. For the first time, the cross sections of the three Υ states, as well as the ψ(2S) one as a function of pT and y, are measured at √s = 5.02 TeV at forward rapidity. These measurements also significantly extend the J/ψ pT reach and supersede previously published results. A comparison with ALICE measurements in pp collisions at √s = 2.76, 7, 8, and 13 TeV is presented and the energy dependence of quarkonium production cross sections is discussed. Finally, the results are compared with the predictions from several production models. | ||
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