Pseudovector components of the pion, pi^0 -> gamma gamma, and F_pi(q^2)
| dc.creator | Maris, Pieter | |
| dc.creator | Roberts, Craig D. | |
| dc.date | 1998-04-23 | |
| dc.date.accessioned | 2026-07-07T11:11:39Z | |
| dc.date.available | 2026-07-07T11:11:39Z | |
| dc.description | As a consequence of dynamical chiral symmetry breaking the pion Bethe-Salpeter amplitude necessarily contains terms proportional to gamma_5 gamma.P and gamma_5 gamma.k, where k is the relative and P the total momentum of the constituents. These terms are essential for the preservation of low energy theorems, such as the Gell-Mann--Oakes-Renner relation and those describing anomalous decays of the pion, and to obtaining an electromagnetic pion form factor that falls as 1/q^2 for large q^2, up to calculable ln(q^2)-corrections. In a simple model, which correlates low- and high-energy pion observables, we find q^2 F_pi(q^2) ~ 0.12 - 0.19 GeV^2 for q^2 >~10 GeV^2. | |
| dc.description | 15 pages, 2 figures, REVTEX | |
| dc.identifier | https://arxiv.org/abs/nucl-th/9804062 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/9804062 | |
| dc.identifier | Phys.Rev.C58:3659-3665,1998 | |
| dc.identifier | doi:10.1103/PhysRevC.58.3659 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/191169 | |
| dc.subject | Nuclear Theory | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Pseudovector components of the pion, pi^0 -> gamma gamma, and F_pi(q^2) | |
| dc.type | text |