Measurement of the RLT response function for π0 electroproduction at Q2=0.070 (GeV/c)2 in the N→Δ transition -: art. no. 058201

Quadrupole amplitudes in the gamma(*)N-->Delta transition are associated with the issue of nucleon deformation. A search for these small amplitudes has been the focus of a series of measurements undertaken at Bates/MIT by the OOPS Collaboration. We report on results from H(e,e(')p)pi(0) data obtained at Q(2)=0.070 (GeV/c)(2) and invariant mass of W=1155 MeV using the out-of-plane detection technique with the OOPS spectrometers. The sigma(LT) and sigma(T)+epsilonsigma(L) response functions were isolated. These results, along with those of previous measurements at W=1172 MeV and Q(2)=0.127 (GeV/c)(2), aim in elucidating the interplay between resonant and nonresonant amplitudes.