Journal article
Measurement of ψ(2S) production cross-sections in proton-proton collisions at √s = 7 and 13 TeV
- Abstract:
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The cross-sections of ψ(2S) meson production in proton-proton collisions at √s = 13 TeV are measured with a data sample collected by the LHCb detector corresponding to an integrated luminosity of 275 pb−1. The production cross-sections for prompt ψ(2S) mesons and those for ψ(2S) mesons from b-hadron decays (ψ(2S)-from-b) are determined as functions of the transverse momentum, pT, and the rapidity, y, of the ψ(2S) meson in the kinematic range 2 < pT < 20 GeV/c and 2.0 < y < 4.5. The production cross-sections integrated over this kinematic region are σ (prompt ψ(2S), 13 TeV) = 1.430 ± 0.005 (stat) ± 0.099 (syst) µb, σ (ψ(2S)-from-b, 13 TeV) = 0.426 ± 0.002 (stat) ± 0.030 (syst) µb.
A new measurement of ψ(2S) production cross-sections in pp collisions at √s = 7 TeV is also performed using data collected in 2011, corresponding to an integrated luminosity of 614 pb−1. The integrated production cross-sections in the kinematic range 3.5 < pT < 14 GeV/c and 2.0 < y < 4.5 are σ (prompt ψ(2S), 7 TeV) = 0.471 ± 0.001 (stat) ± 0.025 (syst) µb, σ (ψ(2S)-from-b, 7 TeV) = 0.126 ± 0.001 (stat) ± 0.008 (syst) µb.
All results show reasonable agreement with theoretical calculations
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, 1.1MB, Terms of use)
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- Publisher copy:
- 10.1140/epjc/s10052-020-7638-y
- Publisher:
- Springer
- Journal:
- European Physical Journal C More from this journal
- Volume:
- 80
- Issue:
- 3
- Article number:
- 185
- Publication date:
- 2020-02-28
- Acceptance date:
- 2020-01-10
- DOI:
- EISSN:
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1434-6052
- ISSN:
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1434-6044
- Language:
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English
- Keywords:
- Pubs id:
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1091711
- Local pid:
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pubs:1091711
- Deposit date:
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2020-04-23
Terms of use
- Copyright holder:
- CERN
- Copyright date:
- 2020
- Rights statement:
- © CERN for the benefit of the LHCb Collaboration 2020. Open Access: This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
- Licence:
- CC Attribution (CC BY)
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