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We recalculate the magnetic moment of neutrinos in a hot and dense medium. The magnetic dipole moment of neutrinos is modified at high temperature and chemical potential. We show that the magnetic dipole moment of electron neutrino does not get a significant contribution from thermal background to meet the cosmological bound. However, chemical potential contribution to the magnetic moment is non-ignorable even when chemical potential is an order of magnitude greater than the electron mass. It is demonstrated that this effect is more significant in the models with an extended Higgs sector through neutrino mixing.

KEYWORDS

Neutrino, Magnetic Moment, Hot and Dense Medium

Cite this paper

Masood, S. 2015 Magnetic Dipole Moment of Neutrino. Journal of High Energy Physics, Gravitation and Cosmology, 1, 1-13. doi: 10.4236-jhepgc.2015.11001.





Author: Samina S. Masood*

Source: http://www.scirp.org/



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