Comment on "Subleading Corrections to Parity Violating Pion Photoproduction"

Details Comment on "Subleading Corrections to Parity Violating Pion Photoproduction" Comment on "Subleading Corrections to Parity Violating Pion Photoproduction"

2001-01-25

arxiv.org/abs/hep-ph/0101290v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

2 pages

Scientific paper

In a recent preprint, hep-ph/0012253, Zhu et al. calculated a part of the next-to-leading order corrections to parity-violating pion photoproduction (pol)gamma p-> pi^+ n in heavy-baryon chiral perturbation theory. They claim they have found the contribution as large as the leading-order. If correct, the process will not be a clean way to extract the longest range PV pion-nucleon coupling constant h_{\pi NN}^(1), as was asserted in our previous publications (hep-ph/0011230, nucl-th/0011100). In this comment we show that there is no solid evidence to support Zhu et al.'s claim. Moreover, we show that the subleading parity-violating coupling h_V cannot be extracted from observables at the order of interest based on the formalism of effective field theory.

Affiliated with

Also associated with

No associations

Rating

Comment on "Subleading Corrections to Parity Violating Pion Photoproduction" does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Comment on "Subleading Corrections to Parity Violating Pion Photoproduction", we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comment on "Subleading Corrections to Parity Violating Pion Photoproduction" will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-389765