Anomalous chromomagnetic moment of quarks

Abstract

We do a perturbative calculation of the anomalous chromomagnetic dipole moment of quarks at one-loop, also considering the effect of a small gauge-invariant mass of the gluon. We find partial agreement with a previous calculation, as well as a divergence. We explain these results by noting that perturbation theory is not valid at the energy scales where these calculations were done, and proceed to give the results at the $M_Z$ scale. We find significant variation, of the anomalous moment of the light quarks, as a function of gluon mass.

17 pages, 12 figures; V2: References added, typos corrected in some equations, differences with existing work discussed in detail, results unchanged

References in corpus (6)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Dressed-quark anomalous magnetic moments
• Chromomagnetic Dipole Moment of the Top Quark Revisited
• Direct photon production as a probe of quarks chromoelectric and chromomagnetic dipole moments at the LHC
• Higgs two-gluon decay and the top-quark chromomagnetic moment

Cited by in corpus (7)

• New estimate of the chromomagnetic dipole moment of quarks in the standard model
• Revisiting the top quark chromomagnetic dipole moment in the SM
• Chromomagnetic and chromoelectric dipole moments of quarks in the reduced 331 model
• The top quark chromomagnetic dipole moment in the SM from the 4-body vertex function
• Off-shell chromomagnetic dipole moments in the SM at and beyond the $Z$ gauge boson mass scale
• Chromomagnetic dipole moment of the top quark in the Bestest Little Higgs model
• Probing top quark anomalous moments in $W$ boson associated single top quark production at the LHC using polarization and spin correlation