Resummation of Relativistic Corrections to e+ e- -> J/psi+eta_c

Abstract

We present a new calculation, in the nonrelativistic QCD (NRQCD) factorization formalism, of the relativistic corrections to the double-charmonium cross section sigma[e+ e- -> J/psi+eta_c] at the energy of the Belle and BABAR experiments. In comparison with previous work, our calculation contains several refinements. These include the use of the improved results for the nonperturbative NRQCD matrix elements, the resummation of a class of relativistic corrections, the use of the vector-meson-dominance method to calculate the fragmentation contribution to the pure QED amplitude, the inclusion of the effects of the running of alpha, and the inclusion of the contribution that arises from the interference between the relativistic corrections and the corrections of next-to-leading order in alpha_s. We also present a detailed estimate of the theoretical uncertainty. We conclude that the discrepancy between the theoretical prediction for sigma[e+e- -> J/psi+eta_c] and the experimental measurements has been resolved.

31 pages, 2 figures, minor corrections, version published in Phys. Rev. D

References in corpus (5)

• Improved determination of color-singlet nonrelativistic QCD matrix elements for S-wave charmonium
• Relativistic corrections to $J/\psi$ exclusive and inclusive double charm production at B factories
• Potential-model calculation of an order-v^2 NRQCD matrix element
• Reconciling the light-cone and nonrelativistic QCD approaches to calculating e+ e- -> J/psi + eta_c
• Exclusive Two-Vector-Meson Production from e^+ e^- Annihilation

Cited by in corpus (36)

• Heavy quarkonium: progress, puzzles, and opportunities
• Higher Charmonia and X,Y,Z states with Screened Potential
• Improved determination of color-singlet nonrelativistic QCD matrix elements for S-wave charmonium
• Factorization and NLO QCD correction in e^+ e^- \to J/ψ(ψ(2S))+ χ_{c0} at B Factories}
• Production of doubly charmed tetraquarks with exotic color configurations in electron-positron collisions
• Inclusive double-quarkonium production at the Large Hadron Collider
• QCD corrections to Upsilon production via color-octet states at the Tevatron and LHC
• NRQCD matrix elements for S-wave bottomonia and Gamma[eta_b(nS) -> gamma gamma] with relativistic corrections
• $O({\alpha }_s{v}^2)$ correction to $e^{+}{e}^{-}\to J/\psi +{\eta }_c$ at $B$ factories
• Factorization in exclusive quarkonium production
• Factorization theorems for exclusive heavy-quarkonium production
• Exclusive $et{a}_b$ decay to double $J/\psi$ at next-to-leading order in $alph{a}_s$
• Exclusive heavy quarkonium + gamma production from e+ e- annihilation into a virtual photon
• Relativistic Correction to Color Octet J/psi Production at Hadron Colliders
• Pair double heavy diquark production in high energy proton-proton collisions
• Study of exclusive processes e^+ e^- \to VP
• The study of double vector charmonium mesons production at B-factories within light cone formalism
• Possible contributions to $e^{+}{e}^{-}\to J/\psi +{\eta }_c$ due to intermediate meson rescatterings
• Prompt heavy quarkonium production in association with a massive (anti)bottom quark at the LHC
• Search for double charmonium decays of the P-wave spin-triplet bottomonium states
• ${\rm Y}$ decay to two-charm quark jets as a Probe of the Color Octet Mechanism
• Next-to-next-to-leading-order QCD corrections to $J/\psi$ plus ${\eta }_c$ production at the $B$ factories
• Evidence of ${\rm Y}(1S)\to J/\psi +{\chi }_{c1}$ and search for double-charmonium production in ${\rm Y}(1S)$ and ${\rm Y}(2S)$ decays
• Double Logarithms in $e^{+}{e}^{-}\to J/\psi +{\eta }_c$
• 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
• Production of double heavy quarkonium at super $Z$ factory
• Revisiting the production of $J/\psi +{\eta }_c$ via the $e^{+}{e}^{-}$ annihilation within the QCD light-cone sum rules
• Invariant-mass distribution of cc-bar in Upsilon(1S) -> cc-bar + X
• Self-consistent analysis for the ${\eta }_c\to \gamma \gamma$ process
• Next-to-next-to-leading-order QCD corrections to double $J/\psi$ production at the $B$ factories
• Heavy Quarkonium Physics-Theoretical Status
• Relativistic corrections to $\psi (nS)\to \rho \pi$ exclusive decays and their role in the understanding of the $\rho \pi$-puzzle
• Endpoint Logarithms in e+e- -> J/psi + eta_c
• Improved analysis of double $J/\psi$ production in $Z$-boson decay
• Some recent progress in understanding exclusive double charmonium production at $B$ factories
• New Charmonium-Like States at Babar and Belle