One-loop corrections to the processes $e^+e^- \to γ, Z \to J/ψ~η_c$ and $e^+e^- \to Z \to J/ψ~J/ψ$

A. V. Berezhnoy; I. N. Belov; S. V. Poslavsky; A. K. Likhoded

doi:10.1103/PhysRevD.104.034029

paper

One-loop corrections to the processes $e^{+} e^{-} \to γ, Z \to J / ψ η_{c}$ and $e^{+} e^{-} \to Z \to J / ψ J / ψ$

arXiv:2101.01477 · doi:10.1103/PhysRevD.104.034029

Abstract

The cross section values of $J / ψ η_{c}$ and $J / ψ J / ψ$ production in $e^{+} e^{-}$ annihilation are estimated within one-loop approximation near $Z$ pole, as well as at higher energies. Both intermediate bosons, $γ$ and $Z$ , are taken into account. It is shown that at $Z$ mass the NLO contribution increases the cross-section values by 3.5 times.

In this version the quality of the text is improved as the manuscript was thoroughly proofread. The physical content remains the same

One-loop corrections to the processes e+e−→γ,Z→J/ψ ηc​ and e+e−→Z→J/ψ J/ψ

Abstract

One-loop corrections to the processes $e^{+} e^{-} \to γ, Z \to J / ψ η_{c}$ and $e^{+} e^{-} \to Z \to J / ψ J / ψ$