Köln 2004 – scientific programme
Parts | Days | Selection | Search | Downloads | Help
HK: Physik der Hadronen und Kerne
HK 38: Electromagnetic and Hadronic Probes VI
HK 38.1: Group Report
Thursday, March 11, 2004, 13:30–14:00, B
Photoproduction of ρ0 mesons and Δ++ baryons in the reaction γ p → p π+ π− — •Karl-Heinz Glander — Physikalisches Institut, Universität Bonn
Photoproduction of ρ0 mesons and Δ++ baryons at photon energies from its threshold to 2.6 GeV have been studied with the SAPHIR detector at the electron stretcher ELSA. The total and differential cross sections were obtained. The angular decay distributions of the ρ0 meson show the s-channel helicity conservation, which is kept at higher photon energies, to be broken slightly near threshold. One-boson-exchange models can describe approximately the behavior of total and differential cross sections of ρ0 photoproduction near threshold.