@article{69a9bfc4765c4705bc3da8327b75fa21,
title = "Associated production of prompt J/ψ and Υ mesons in pp collisions at s = 13 TeV",
abstract = "The associated production of prompt J/ψ and Υ mesons in pp collisions at a centre-of-mass energy of s = 13 TeV is studied using LHCb data, corresponding to an integrated luminosity of 4 fb−1. The measurement is performed for J/ψ (Υ) mesons with a transverse momentum pT< 10 (30) GeV/c in the rapidity range 2.0 < y < 4.5. In this kinematic range, the cross-section of the associated production of prompt J/ψ and Υ(1S) mesons is measured to be 133 ± 22 ± 7 ± 3 pb, with a significance of 7.9 σ, and that of prompt J/ψ and Υ(2S) mesons to be 76 ± 21 ± 4 ± 7 pb, with a significance of 4.9 σ. The first uncertainty is statistical, the second systematic, and the third due to uncertainties on the used branching fractions. This is the first observation of the associated production of J/ψ and Υ(1S) in proton-proton collisions. Differential cross-sections are measured as functions of variables that are sensitive to kinematic correlations between the J/ψ and Υ(1S) mesons. The effective cross-sections of the associated production of prompt J/ψ and Υ mesons are obtained and found to be compatible with measurements using other particle productions.",
keywords = "Flavour Physics, Hadron-Hadron Scattering, Hard Scattering, Heavy Quark Production",
author = "R. Aaij and Abdelmotteleb, {A. S.W.} and {Abellan Beteta}, C. and F. Abudin{\'e}n and T. Ackernley and B. Adeva and M. Adinolfi and P. Adlarson and H. Afsharnia and C. Agapopoulou and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and K. Akiba and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and Z. Aliouche and {Alvarez Cartelle}, P. and R. Amalric and S. Amato and Amey, {J. L.} and Y. Amhis and L. An and L. Anderlini and M. Andersson and A. Andreianov and M. Andreotti and D. Andreou and D. Ao and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and B. Audurier and {Bachiller Perea}, {I. B.} and S. Bachmann and M. Bachmayer and Back, {J. J.} and A. Bailly-reyre and {Baladron Rodriguez}, P. and V. Balagura and W. Baldini and {Baptista de Souza Leite}, J. and M. Barbetti and Barlow, {R. J.} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and Basels, {J. M.} and G. Bassi and V. Batozskaya and B. 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Zuliani and G. Zunica and {The LHCb Collaboration}",
note = "Publisher Copyright: {\textcopyright} The Author(s) 2023.",
year = "2023",
month = aug,
doi = "10.1007/JHEP08(2023)093",
language = "English",
volume = "2023",
pages = "1--24",
journal = "Journal of High Energy Physics",
issn = "1126-6708",
publisher = "Springer Verlag",
number = "8",
}