Resonances in forward π+π- photoproduction on hydrogen
Abstract
We show that the cross section of the Δ(1230) production in the γp → pπ+ π- reaction at forward angles and with unpolarized photons can be described in terms of gauge invariant one pion t-channel exchange amplitudes. Proper description of the polarized cross sections requires, however, the inclusion of contributions from the baryon exchanges.
- Publication:
-
European Physical Journal Web of Conferences
- Pub Date:
- June 2019
- DOI:
- 10.1051/epjconf/201919902009
- Bibcode:
- 2019EPJWC.19902009B