Calculation of the N to Delta electromagnetic transition matrix element
C. Alexandrou, Ph. de Forcrand, Th. Lippert, H. Neff, J. W. Negele, K. Schilling, W. Schroers, A. Tsapalis
Abstract
We present results on the ratio of electric quadrupole to magnetic dipole amplitudes, REM= GE2/ GM1, for the transition γN to Δ from lattice QCD. We consider both the quenched and the 2-flavor theory.
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