Chiral O(Q^4) two-body operators for s-wave pion photoproduction on the NN system
| dc.creator | Gardestig, A. | |
| dc.date | 2006-04-16 | |
| dc.date.accessioned | 2026-07-07T10:46:58Z | |
| dc.date.available | 2026-07-07T10:46:58Z | |
| dc.description | The two-body currents for s-wave pion photoproduction on the NN system are derived to O(Q^4) in chiral perturbation theory. For the interesting case of 3S1 <-> 1S0 transitions, we show that an axial isovector two-nucleon contact term connects the short-distance physics of pion photoproduction to pion production and several important electroweak reactions. We also find that the standard chiral Lagrangian gives a gamma pi pi N N vertex that have not been explicitly mentioned in previous literature. The corresponding Feynman rule is presented here and some processes where it should be important are briefly discussed. | |
| dc.description | 9 pages, REVTeX, 1 eps figure | |
| dc.identifier | https://arxiv.org/abs/nucl-th/0604035 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/0604035 | |
| dc.identifier | Phys.Rev.C74:017001,2006 | |
| dc.identifier | doi:10.1103/PhysRevC.74.017001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/183417 | |
| dc.subject | Nuclear Theory | |
| dc.title | Chiral O(Q^4) two-body operators for s-wave pion photoproduction on the NN system | |
| dc.type | text |