Perturbative QCD analysis of exclusive J/ψ+η_c production in e^+e^- annihilation

Abstract

We analyze the exclusive charmonium $J/\psi +{\eta }_c$ pair production in $e^{+}{e}^{-}$ annihilation using the nonfactorized perturbative QCD and the light-front quark model(LFQM) that goes beyond the peaking approximation. We effectively include all orders of higher twist terms in the leading order of QCD coupling constant and compare our nonfactorized analysis with the usual factorized analysis in the calculation of the cross section. We also calculate the quark distribution amplitudes, the Gegenbauer moments, and the decay constants for $J/\psi$ and ${\eta }_c$ mesons using our LFQM. Our nonfactorized result enhances the NRQCD result by a factor of $3\sim 4$ at $\sqrt{s}=10.6$ GeV.

17 pages, 6figures; added 2 more figures; version to appear in Physical Review D

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Cited by in corpus (28)

• Quarkonium as relativistic bound state on the light front
• QCD radiative correction to color-octet $J/\psi$ inclusive production at B Factories
• Modelling light-cone distribution amplitudes from non-relativistic bound states
• Leading-twist parton distribution amplitudes of S-wave heavy-quarkonia
• Factorization and NLO QCD correction in e^+ e^- \to J/ψ(ψ(2S))+ χ_{c0} at B Factories}
• Parton Distribution Functions of Heavy Mesons on the Light Front
• Search for excited charmonium states in $e^{+}{e}^{-}$ Annihilation at $\sqrt{s}=10.6$ GeV
• Analyses of decay constants and light-cone distribution amplitudes for s-wave heavy meson
• Leading twist distribution amplitudes of P-wave nonrelativistic mesons
• QCD corrections to e^+ e^- to J/ψ(ψ(2S))+χ_{cJ} (J=0,1,2) at B Factories
• Comparison of two Minkowski-space approaches to heavy quarkonia
• Relativistic effects in the double S- and P-wave charmonium production in e^+e^- annihilation
• Double charmonium production at B-factories within light cone formalism
• Relativistic description of the double charmonium production in $e^{+}{e}^{-}$ annihilation
• The cross section of the process $e^{+}+e^{-}\to J/\psi +{\eta }_c$ within the QCD light-cone sum rules
• The study of leading twist light cone wave functions of 2S state charmonium mesons
• Study of quark distribution amplitudes of 1S and 2S heavy quarkonium states
• Relativistic corrections to the pair double heavy diquark production in e^+e^- annihilation
• Study of exclusive processes e^+ e^- \to VP
• Relativistic corrections to the pair $B_c$-meson production in $e^{+}{e}^{-}$ annihilation
• The study of double vector charmonium mesons production at B-factories within light cone formalism
• Exclusive double $B_c$ meson production from $e^{+}{e}^{-}$ annihilation into two virtual photons
• The spin alignment of vector mesons with light front quarks
• Next-to-leading-order study of $J/\psi$ angular distributions in $e^{+}{e}^{-}\to J/\psi +{\eta }_c,{\chi }_{cJ}$ at $\sqrt{s}\approx 10.6$ GeV
• Exclusive C=+ charmonium production in $e^{+}{e}^{-}\to H+\gamma$ at B-factories within light cone formalism
• Mass of nonrelativistic meson from leading twist distribution amplitudes
• Properties of the quark-antiquark-gluon Fock state in the η_c meson
• Ground state pseudoscalar mesons on the light front: from the light to heavy sector