Exclusive C=+ charmonium production in $e^+ e^- \to H+\gamma$ at B-factories within light cone formalism

Understand

In this paper the cross sections of the processes $e^+ e^- \to H+\gamma, H=\eta_c, \eta_c', \chi_{c0}, \chi_{c1}, \chi_{c2}$ are calculated.

• The calculation is carried out at the leading twist approximation of light cone formalism.
• Within this approach the leading logarithmic radiative and relativistic corrections to the amplitudes are resumed.
• For the processes $e^+ e^- \to \eta_c, \eta_c'+\gamma$ one loop radiative corrections are taken into account.