Abstract
Production of the ψ(2S) and ϒ(3S) mesons is considered in the framework of the leading order parton Reggeization approach and within the NRQCD factorization hypothesis. A self-consistent description of the p T spectra at low p T (fusion model) and high p T (fragmentation model) is obtained. The fusion model predictions for polarization observables agree with experiment for ϒ(3S) and are at variance with experiment for ψ(2S).
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References
G. T. Bodwin, E. Braaten, and G. P. Lepage, “Rigorous QCD analysis of heavy quarkonium production and annihilation,” Phys. Rev. D: Part. Fields 51, 1125 (1995).
M. A. Nefedov, V. A. Saleev, and A. V. Shipilova, “Dijet azimuthal decorrelations at the LHC in the parton Reggeization approach,” Phys. Rev. D: Part. Fields 87, 094030 (2013).
M. A. Kimber, A. D. Martin, and M. G. Ryskin, “Unintegrated parton distributions,” Phys. Rev. D: Part. Fields 63, 114027 (2001).
L. N. Lipatov, “Gauge invariant effective action for high-energy processes in QCD,” Nucl. Phys. B 452, 369 (1995).
T. Aaltonen et al. (CDF Collaboration), “Production of ψ(2S) mesons in p anti-p collisions at 1.96-TeV,” Phys. Rev. D: Part. Fields 80, 031103 (2009).
G. Aad et al. (ATLAS Collaboration), “Measurement of the production cross section of ψ(2S) → J/ψ(→ μ+μ−) π+π− in pp collisions at \(\sqrt S \) = 7 TeV at ATLAS,” J. High Energy Phys. 1409, 079 (2014).
V. Khachatryan et al. (CMS Collaboration), “Measurement of J/ψ and ψ(2S) prompt double-differential cross sections in pp collisions at \(\sqrt s \) = 7 TeV,” Phys. Rev. Lett. 114, 191802 (2015).
G. Aad et al. (ATLAS Collaboration), “Measurement of upsilon production in 7 TeV pp collisions at ATLAS,” Phys. Rev. D: Part. Fields 87, 052004 (2013).
E. Braaten, B. A. Kniehl, and J. Lee, “Polarization of prompt J/ψ at the Tevatron,” Phys. Rev. D: Part. Fields 62, 094005 (2000).
E. J. Eichten and C. Quigg, “Quarkonium wave functions at the origin,” Phys. Rev. D: Part. Fields 52, 1726 (1995).
P. Faccioli et al., “Towards the experimental clarification of quarkonium polarization,” Eur. Phys. J. C 69, 657 (2010).
S. Chatrchyan et al. (CMS Collaboration), “Measurement of the prompt J/ψ and ψ(2S) polarizations in pp collisions at \(\sqrt s \) = 7 TeV,” Phys. Lett. B 727, 381 (2013), “Measurement of the ϒ(1S), ϒ(2S) and ϒ(3S) polarizations in pp collisions at \(\sqrt s \) = 7 TeV,” Phys. Rev. Lett. 110, 081802 (2013).
A. Abulencia et al. (CDF Collaboration), “Polarization of J/ψ and ψ2S mesons produced in \(p\bar p\) collisions at \(\sqrt s \) = 1.96 TeV,” Phys. Rev. Lett. 99, 132001 (2007)
T. Aaltonen et al. (CDF Collaboration), “Measurements of angular distributions of muons from ϒ meson decays in \(p\bar p\) collisions at \(\sqrt s \) = 1.96 TeV,” Phys. Rev. Lett. 108, 151802 (2012).
M. Butenshön and B. A. Kniehl, “Next-to-leading order tests of non-relativistic-QCD factorization with J/ψ yield and polarization,” Mod. Phys. Lett. A 28, 1350027 (2013).
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Original Russian Text © M.A. Nefedov, V.A. Saleev, 2017, published in Fizika Elementarnykh Chastits i Atomnogo Yadra, 2017, Vol. 48, No. 6.
A talk given at the International Session-Conference “Physics of Fundamental Interactions”, Section of Nuclear Physics, Physical Sciences Division, Russian Academy of Sciences, Dubna, April 12–15, 2016.
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Nefedov, M.A., Saleev, V.A. Production of ψ(2S) and ϒ(3S) mesons in the parton Reggeization approach: Polarization observables and fragmentation. Phys. Part. Nuclei 48, 859–861 (2017). https://doi.org/10.1134/S1063779617060442
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DOI: https://doi.org/10.1134/S1063779617060442