Latest results from Graal on pseudoscalar and vector meson photoproduction

por Carlo Schaerf (Universitá Roma2)

viernes 11 jun. 2010 15:00 → 16:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

We review the last results from the Graal polarized and tagged gamma ray beam obtained by backward Compton scattering of laser light on the relativistic electrons circulating in the ESRF storage ring. In particular we will discuss the photoproduction of pi- p on the neutron in a deuterium target and the photoproduction of omega in Hydrogen and Deuterium. We will also discuss the new upper limit on the anisotropy of the velocity of light obtained by the Graal collaboration exploiting the (sidereal) daily variation of the direction of the Graal beam with respect to any absolute reference frame.