Exclusive heavy quarkonium + gamma production from e+ e- annihilation into a virtual photon

Abstract

We compute the cross section for exclusive production of a photon associated with a heavy quarkonium H of charge-conjugation parity C=+1 from e+ e- annihilation into a virtual photon at the center-of-momentum energy root-s=10.58 GeV. The NRQCD factorization formulas for the differential and total cross sections are obtained at leading order in the strong coupling and in the relative velocity of the heavy quark in the quarkonium rest frame. The predicted cross sections for the S-wave spin-singlet cases are about 80 fb and 50 fb for H = eta_c and eta_c(2S), respectively. Among P-wave spin-triplet charmonia, chi_{c1} has a particularly large cross section of about 14 fb. The cross sections for bottomonium states eta_b and chi_{bJ} are about 3 fb. A rough estimate of the background reveals that the signal significances for charmonium processes are sufficiently large enough to be detected with ease with the integrated luminosities available at the present B factories.

22 pages, 1 figure, version published in Phys. Rev. D

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• Higher Order Corrections to the Cross Section of e+e- to Quarkonium plus gamma
• Exclusive radiative production of fully-charmed tetraquarks at $B$ Factory
• Refactorizing NRQCD short-distance coefficients in exclusive quarkonium production
• Decay and electromagnetic production of strongly coupled quarkonia in pNRQCD
• Search for $C=+$ charmonium and bottomonium states in $e^{+}{e}^{-}\to \gamma +X$ at B factories
• ${\alpha }_s{v}^2$ corrections to ${\eta }_c$ and ${\chi }_{cJ}$ production recoiled with a photon at $e^{+}{e}^{-}$ colliders
• Relativistic corrections to exclusive ${\chi }_{cJ}+\gamma$ production from $e^{+}{e}^{-}$ annihilation
• Exclusive charmonium production from $e^{+}{e}^{-}$ annihilation round the $Z^0$ peak
• ${\chi }_{QJ}\to {\ell }^{+}{\ell }^{-}$ within and beyond the Standard Model
• Observation of $e^{+}{e}^{-}\to \gamma {\chi }_{c1}$ and search for $e^{+}{e}^{-}\to \gamma {\chi }_{c0},\gamma {\chi }_{c2},$ and $\gamma {\eta }_c$ at $\sqrt{s}$ near 10.6 GeV at Belle
• Resummation of relativistic corrections to exclusive productions of charmonia in e+ e- collisions
• Radiative hadronization: Photon emission at hadronization from quark-gluon plasma
• $P$-wave quarkonium wavefunctions at the origin in the $\overline{\mathrm{MS}}$ scheme
• Search for $C=+$ charmonium and XYZ states in $e^{+}{e}^{-}\to \gamma +H$ at BESIII
• Exclusive C=+ charmonium production in $e^{+}{e}^{-}\to H+\gamma$ at B-factories within light cone formalism
• Relativistic corrections to the semi-inclusive decay of $\mathbf{\psi }$ and $\mathbf{{\rm Y}}$
• Inclusive decays of ${\eta }_b$ into $S$- and $P$-wave charmonium states
• Bottomonium production associated with a photon at a high luminosity $e^{+}{e}^{-}$ collider with next-to-leading order QCD corrections
• Higher-order corrections to exclusive production of charmonia at B factories
• Dual Meissner Effect and Quark Confinement Potential in S U(3) Dual QCD Formalism