Theoretical uncertainties in exclusive electroproduction S-wave heavy quarkonia

Abstract

In this work, we revise the conventional description of J/Psi(1S), Y(1S), Psi'(2S) and Y'(2S) elastic photo- and electroproduction off a nucleon target within the color dipole picture and carefully study various sources of theoretical uncertainties in calculations of the corresponding electroproduction cross sections. For this purpose, we test the corresponding predictions using a bulk of available dipole cross section parametrisations obtained from deep inelastic scattering data at HERA. Specifically, we provide the detailed analysis of the energy and hard-scale dependencies of quarkonia yields employing the comprehensive treatment of the quarkonia wave functions in the Schroedinger equation based approach for a set of available c-\bar{c} and b-\bar{b} interquark interaction potentials. Besides, we quantify the effect of Melosh spin rotation, the Q^2-dependence of the diffractive slope and an uncertainty due to charm and bottom quark mass variations.

43 pages of Latex including 29 figures

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• Spin rotation effects in diffractive electroproduction of heavy quarkonia
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• Vector quarkonia at the LHC with JETHAD: A high-energy viewpoint
• Electroproduction of heavy quarkonia: significance of dipole orientation
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• First measurement of the $|t|$-dependence of incoherent J/$\psi$ photonuclear production
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• Exclusive quarkonium photoproduction: predictions with the Balitsky-Kovchegov equation including the full impact-parameter dependence
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• The energy dependence of exclusive heavy vector meson photoproduction cross-sections and NLO BFKL evolution
• Coherent photoproduction of light vector mesons off nuclear targets in the dipole picture
• Coherent photo- and electroproduction of charmonia on nuclear targets revisited: Green function formalism