Speaker
jiali shi
Description
MFFs of nucleons have been widely studied by both experiment and theory. However, the research on hyperons are not so dedicated. In our present work, we analyzed EMFF of the hyperon. The potentials are calculated from SU(3) chiral effective field theory and the scattering amplitudes are solved by Lippmann-Schwinger equation, the amplitudes of electron-positron annihilating into hyperon-anti-hyperon are obtained by the distorted wave born approximation. The latest data are fitted to fix the unknown couplings. Then, the EMFFs are extracted and analyzed. We also discuss the possible oscillation of the EMFFs of the hyperon. Further measurements from the experiment would be quite helpful to study the EMFFs of the hyperons.
Author
jiali shi