Constraining the low energy pion electromagnetic form factor with space-like data
| dc.creator | Ananthanarayan, B. | |
| dc.creator | Ramanan, S. | |
| dc.date | 2008-01-14 | |
| dc.date.accessioned | 2026-07-07T11:55:12Z | |
| dc.date.available | 2026-07-07T11:55:12Z | |
| dc.description | The pionic contribution to the g-2 of the muon involves a certain integral over the the modulus squared of F_π(t), the pion electromagnetic form factor. We extend techniques that use cut-plane analyticity properties of F_π(t) in order to account for present day estimates of the pionic contribution and experimental information at a finite number of points in the space-like region. Using data from several experiments over a large kinematic range for |t|, we find bounds on the expansion coefficients of F_π(t), sub-leading to the charge radius. The value of one of these coefficients in chiral perturbation theory respects these bounds. Furthermore, we present a sensitivity analysis to the inputs. A brief comparison with results in the literature that use observables other than the g-2 and timelike data is presented. | |
| dc.description | 11 pages in EPJ journal style, to appear in European Physical Journal C | |
| dc.identifier | https://arxiv.org/abs/0801.2023 | |
| dc.identifier | http://arxiv.org/abs/0801.2023 | |
| dc.identifier | Eur.Phys.J.C54:461-470,2008 | |
| dc.identifier | doi:10.1140/epjc/s10052-008-0533-6 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205168 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Constraining the low energy pion electromagnetic form factor with space-like data | |
| dc.type | text |