Extraction of proton form factors in the timelike region from unpolarized e+e- --> p pbar events
| dc.creator | Bianconi, A. | |
| dc.creator | Pasquini, B. | |
| dc.creator | Radici, M. | |
| dc.date | 2006-06-29 | |
| dc.date.accessioned | 2026-07-07T11:05:10Z | |
| dc.date.available | 2026-07-07T11:05:10Z | |
| dc.description | We have performed numerical simulations of the unpolarized e+e- --> p pbar process in kinematic conditions under discussion for a possible upgrade of the existing DAFNE facility. By fitting the cross section angular distribution with a typical Born expression, we can extract information on the ratio |G_E/G_M| of the proton electromagnetic form factors in the timelike region within a 5-10% uncertainty. We have explored also non-Born contributions to the cross section by introducing a further component in the angular fit, which is related to two-photon exchange diagrams. We show that these corrections can be identified if larger than 5% of the Born contribution, and if relative phases of the complex form factors do not produce severe cancellations. | |
| dc.description | 10 pages in RevTeX style; 8 figures in eps format | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0606299 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0606299 | |
| dc.identifier | Phys.Rev.D74:034009,2006 | |
| dc.identifier | doi:10.1103/PhysRevD.74.034009 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/189126 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Extraction of proton form factors in the timelike region from unpolarized e+e- --> p pbar events | |
| dc.type | text |