Off-shell chromomagnetic dipole moments in the SM at and beyond the $Z$ gauge boson mass scale

TL;DR

This paper calculates the off-shell anomalous chromomagnetic dipole moments of SM quarks at the Z boson scale using the MS scheme, revealing significant discrepancies with previous predictions.

Contribution

It provides the first detailed computation of off-shell chromomagnetic dipole moments of SM quarks at the Z scale, highlighting notable differences from earlier results.

Findings

Numerical results differ from previous predictions by up to two orders of magnitude.

Discrepancies suggest the need for revisiting theoretical models.

Results are obtained within the ar{ extrm{MS}} scheme.

Abstract

The off-shell anomalous chromomagnetic dipole moment of the standard model quarks ($u$, $d$, $s$, $c$ and $b$), at the $Z$ gauge boson mass scale, is computed by using the $\overline{\textrm{MS}}$ scheme. The numerical results disagree with all the previous predictions reported in the literature and show a discrepancy of up to two orders of magnitude in certain situations.