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Choudhury, Ishita Dutta; Lahiri, Amitabha

Anomalous chromomagnetic moment of quarks. (English) Zbl 1319.81078

Mod. Phys. Lett. A 30, No. 23, Article ID 1550113, 15 p. (2015).
Summary: We do a perturbative calculation of the anomalous chromomagnetic dipole moment (CMDM) of quarks at one-loop, considering the effect of a small 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.

MSC:

81V05 Strong interaction, including quantum chromodynamics
81T13 Yang-Mills and other gauge theories in quantum field theory
81V15 Weak interaction in quantum theory

Keywords:

gluon mass; quark dipole moment

Software:

Mathematica
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Full Text: DOI arXiv

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