Omega baryon electromagnetic form factors from lattice QCD

Abstract

We present results on the Omega baryon electromagnetic form factors using N_f= 2 + 1 dynamical domain-wall fermion configurations corresponding to a pion mass of about 330 MeV. We construct appropriate sequential sources for the determination of the two dominant form factors GE0 and GM1 as well as a sequential source that isolates the subdominant electric quadrupole form factor GE2. We calculate the Omega baryon magnetic moment, mu_omega, and electric charge radius, <r_E0>^2, and compare to experiment, for the case of mu_omega, and to other lattice calculations.

8 pages, 4 figures, Presented at the XXVII International Symposium on Lattice Field Theory, LATTICE 2009, July 26-31, 2009, Peking University, Beijing, China