In Phys. Rev. Lett. 89, 101802 (2002); erratum, ibid. 89, 229902(E) (2002), Bernabeu, Papavassiliou, and Vidal claim that they can extract a gauge-independent neutrino charge radius (NCR) which is, therefore, a physical observable. We show here that this claim is incorrect by demonstrating that the NCR is, in general, gauge-dependent.
@article{arxiv.hep-ph/0303188,
title = {Comment on "Observability of the Neutrino Charge Radius"},
author = {Kazuo Fujikawa and Robert Shrock},
journal= {arXiv preprint arXiv:hep-ph/0303188},
year = {2007}
}