Comment on "On the implementation of CVC in weak charged-current proton-neutron transitions" by C. Giunti, arXiv: 1602.00215 [hep-ph]

TL;DR

This paper clarifies the nature of the conserved charged vector current term in neutron-proton transitions, distinguishing its relation to first class currents rather than second class currents, correcting previous interpretations.

Contribution

It provides a clarification on the conservation of the charged vector current, emphasizing its connection to first class currents in neutron-proton transitions.

Findings

The conserved current term is linked to first class currents.

It corrects the interpretation of the current's relation to second class currents.

The analysis refines understanding of weak charged-current transitions.

Abstract

We show that the term maintaining conservation of the charged vector current for the transitions "neutron <-> proton" even for different masses of the neutron and proton (see T. Leitner et al., Phys. Rev. C {\bf 73}, 065502 (2006) and A. M. Ankowski, arXiv:1601.06169 [hep-ph]) is related to the first class current contribution but not to the second class one as has been pointed out by C. Giunti, arXiv: 1602.00215 [hep-ph].