A. Hotta

Recoil Polarization for Delta Excitation in Pion Electroproduction

We measured angular distributions of recoil-polarization response functions for neutral pion electroproduction for W = 1.23 GeV at Q(2) = 1.0 (GeV/c)(2), obtaining 14 separated response functions plus 2 Rosenbluth combinations; of these, 12 have been observed for the first time. Dynamical models do not describe quantities governed by imaginary parts of interference products well, indicating the need for adjusting magnitudes and phases for nonresonant amplitudes. We performed a nearly model-independent multipole analysis and obtained values for Re (S(1+)/M(1+)) = -(6.84 +/- 0.15)% and Re (E(1+)/M(1+)) = -(2.91 +/- 0.19)% that are distinctly different from those from the traditional Legendre analysis based upon M1+ dominance and ll(pi) < or = 1 truncation.

Measurements of the generalized electric and magnetic polarizabilities of the proton at low Q2 using the virtual-compton-scattering reaction.

The mean square polarizability radii of the proton have been measured for the first time in a virtual-Compton-scattering experiment performed at the MIT-Bates out-of-plane scattering facility. Response functions and polarizabilities obtained from a dispersion analysis of the data at Q2 = 0.057 GeV2/c2 are in agreement with O(p3) heavy baryon chiral perturbation theory. The data support the dominance of mesonic effects in the polarizabilities.

Measurement of the [Formula Presented] response function for [Formula Presented] electroproduction at [Formula Presented] in the [Formula Presented] transition

Quadrupole amplitudes in the

Threshold electrodisintegration of 3He

\gamma^{*}N\to\Delta

Elastic magnetic electron scattering from sup 13 C at Q sup 2 =1 GeV sup 2 / c sup 2

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

Transverse inelastic electron scattering from the deuteron at high momentum transfers

(e,e^\prime p)\pi^0

Isoscalar character of the Jπ = 6+, Ex = 5.125 MeV state in 58Ni

data obtained at

Measurements of deuteron magnetic form factor high momentum transfer.

Q^2= 0.070

Investigation of the conjectured nucleon deformation at low momentum transfer.

(GeV/c)

Convection currents and spin magnetization in E2 transitions of /sup 12/C

^2