Comment on "Subleading Corrections to Parity Violating Pion Photoproduction"
| dc.creator | Chen, Jiunn-Wei | |
| dc.creator | Ji, Xiangdong | |
| dc.date | 2001-01-25 | |
| dc.date.accessioned | 2026-07-07T03:43:46Z | |
| dc.date.available | 2026-07-07T03:43:46Z | |
| dc.description | 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_{πNN}^(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. | |
| dc.description | 2 pages | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0101290 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0101290 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/40343 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.subject | Nuclear Experiment | |
| dc.subject | Nuclear Theory | |
| dc.title | Comment on "Subleading Corrections to Parity Violating Pion Photoproduction" | |
| dc.type | text |