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Measurement of associated J/ψ-ψ(2S) production cross-section in pp collisions at √s = 13 TeV

Aaij, R. ; Ruiz-Vidal, Joan LU and Zunica, G. (2024) In Journal of High Energy Physics 2024(5).
Abstract
The cross-section of associated J/ψ-ψ(2S) production in proton-proton collisions at a centre-of-mass energy of (Formula presented.) TeV is measured using a data sample corresponding to an integrated luminosity of 4.2 fb−1, collected by the LHCb experiment. The measurement is performed for both J/ψ and ψ(2S) mesons having transverse momentum pT< 14 GeV/c and rapidity 2.0 < y < 4.5, assuming negligible polarisation of the J/ψ and ψ(2S) mesons. The production cross-section is measured to be 4.5 ± 0.7 ± 0.3 nb, where the first uncertainty is statistical and the second systematic. The differential cross-sections are measured as functions of several kinematic variables of the J/ψ-ψ(2S) candidates. The results are combined with a... (More)
The cross-section of associated J/ψ-ψ(2S) production in proton-proton collisions at a centre-of-mass energy of (Formula presented.) TeV is measured using a data sample corresponding to an integrated luminosity of 4.2 fb−1, collected by the LHCb experiment. The measurement is performed for both J/ψ and ψ(2S) mesons having transverse momentum pT< 14 GeV/c and rapidity 2.0 < y < 4.5, assuming negligible polarisation of the J/ψ and ψ(2S) mesons. The production cross-section is measured to be 4.5 ± 0.7 ± 0.3 nb, where the first uncertainty is statistical and the second systematic. The differential cross-sections are measured as functions of several kinematic variables of the J/ψ-ψ(2S) candidates. The results are combined with a measurement of J/ψ-J/ψ production, giving a cross-section ratio between J/ψ-ψ(2S) and J/ψ-J/ψ production of 0.274 ± 0.044 ± 0.008, where the first uncertainty is statistical and the second systematic. © The Author(s) 2024. (Less)
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Contribution to journal
publication status
published
subject
keywords
Hadron-Hadron Scattering, Multi-Parton Interactions, QCD, Quarkonium
in
Journal of High Energy Physics
volume
2024
issue
5
article number
259
publisher
Springer
external identifiers
  • scopus:85201280678
ISSN
1029-8479
DOI
10.1007/JHEP05(2024)259
language
English
LU publication?
yes
id
b0a8b76a-b144-432a-a10b-0b9fa3abe320
date added to LUP
2024-10-10 11:26:26
date last changed
2025-04-04 14:08:57
@article{b0a8b76a-b144-432a-a10b-0b9fa3abe320,
  abstract     = {{The cross-section of associated J/ψ-ψ(2S) production in proton-proton collisions at a centre-of-mass energy of (Formula presented.) TeV is measured using a data sample corresponding to an integrated luminosity of 4.2 fb−1, collected by the LHCb experiment. The measurement is performed for both J/ψ and ψ(2S) mesons having transverse momentum pT&lt; 14 GeV/c and rapidity 2.0 &lt; y &lt; 4.5, assuming negligible polarisation of the J/ψ and ψ(2S) mesons. The production cross-section is measured to be 4.5 ± 0.7 ± 0.3 nb, where the first uncertainty is statistical and the second systematic. The differential cross-sections are measured as functions of several kinematic variables of the J/ψ-ψ(2S) candidates. The results are combined with a measurement of J/ψ-J/ψ production, giving a cross-section ratio between J/ψ-ψ(2S) and J/ψ-J/ψ production of 0.274 ± 0.044 ± 0.008, where the first uncertainty is statistical and the second systematic. © The Author(s) 2024.}},
  author       = {{Aaij, R. and Ruiz-Vidal, Joan and Zunica, G.}},
  issn         = {{1029-8479}},
  keywords     = {{Hadron-Hadron Scattering; Multi-Parton Interactions; QCD; Quarkonium}},
  language     = {{eng}},
  number       = {{5}},
  publisher    = {{Springer}},
  series       = {{Journal of High Energy Physics}},
  title        = {{Measurement of associated J/ψ-ψ(2S) production cross-section in pp collisions at √s = 13 TeV}},
  url          = {{http://dx.doi.org/10.1007/JHEP05(2024)259}},
  doi          = {{10.1007/JHEP05(2024)259}},
  volume       = {{2024}},
  year         = {{2024}},
}