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Author  |
LHCb Collaboration (Aaij, R. et al); Jaimes Elles, S.J.; Jashal, B.K.; Martinez-Vidal, F.; Oyanguren, A.; Rebollo De Miguel, M.; Sanderswood, I., Zhuo, J. |
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Title |
Measurement of associated Jψ-ψ(2S) production cross-section in pp collisions at √s=13 TeV |
Type |
Journal Article |
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Year |
2024 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
05 |
Issue |
5 |
Pages |
259 - 27pp |
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Keywords |
Hadron-Hadron Scattering; Multi-Parton Interactions; QCD; Quarkonium |
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Abstract |
The cross-section of associated J/psi-psi(2S) production in proton-proton collisions at a centre-of-mass energy of root s = 13 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/psi and psi(2S) mesons having transverse momentum p(T) < 14 GeV/c and rapidity 2.0 < y < 4.5, assuming negligible polarisation of the J/psi and psi(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/psi-psi(2S) candidates. The results are combined with a measurement of J/psi- J/psi production, giving a cross-section ratio between J/psi-psi(2S) and J/psi- J/psi production of 0.274 +/- 0.044 +/- 0.008, where the first uncertainty is statistical and the second systematic. |
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Address |
[Egede, U.; Fujii, Y.; Hadavizadeh, T.; Henderson, R. D. L.; Lane, J. J.; Monk, M.; Song, R.; Walton, E. J.; Ward, J. A.] Monash Univ, Sch Phys & Astron, Melbourne, Vic, Australia, Email: li.xu@cern.ch |
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Publisher |
Springer |
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Language |
English |
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Original Title |
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Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1029-8479 |
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Notes |
WOS:001270310300001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6282 |
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