Sharada Boinepalli (CSSM)
CSSM
Wednesday, October 19
Seminar Room, First Floor, Physics, University of Adelaide
Electromagnetic properties of baryons
We have been investigating the electromagnetic properties of octet and decuplet baryons by numerically simulating quenched QCD on the lattice. With the aid of the FLIC fermion action developed here at the CSSM, we are exploring the light quark mass region in an unprecedented manner. Of particular interest is our search for chiral non-analytic behaviour in electromagnetic observables including the charge radius and magnetic moments of quark distributions in the proton, for example. We compare our results with the expectations of quenched Chiral perturbation theory. Here the distribution of up quarks in the neutron and the neutron charge radius itself are particularly fascinating.