Next-to-leading order QCD corrections to paired $B_c$ production in $e^+e^-$ annihilation

TL;DR

This paper provides a detailed theoretical analysis of paired $B_c$ meson production in $e^+e^-$ annihilation, incorporating full next-to-leading order QCD corrections across various energy scales and electroweak channels.

Contribution

It introduces a comprehensive calculation of NLO QCD corrections for $B_c$ pair production, including electroweak effects and azimuthal asymmetries, at different energies.

Findings

QCD corrections are significant at low energies.

Z-boson contributions are important at high energies.

Azimuthal asymmetry from weak interactions is analyzed.

Abstract

We present theoretical analysis of paired $B_c$ mesons production in $e^+e^-$ annihilation at different energy scales taking into account full next-to-leading order QCD corrections. Both possible electroweak channels are considered: production via virtual photon and via virtual $Z$-boson. We study in detail the role of radiative QCD corrections, which were found to be significant especially at low energies. It is shown that the contribution from $Z$-boson is significant at high energies ($\sqrt{s} > M_Z/2$) especially in the case of paired production of pseudo-scalar and vector ($B_c + B_c^*$) mesons. Azimuthal asymmetry induced by a $P$-violating weak interaction with $Z$-boson is also analyzed.