Abstract

The Spin Correlation Parameters in Electron-Proton Inclusive Scattering in 
the Delta-Excitation Region O.F. Filoti, J. R. Calarco, University of New 
Hampshire, M. Kohl, T. Botto, MIT, for the BLAST collaboration.
We present a preliminary report on the measurement of spin correlation 
parameters in inclusive scattering of longitudinally polarized electrons 
from nuclear-polarized hydrogen using BLAST detector at MIT-Bates Linear 
Accelerator Center.
The Bates Large Acceptance Spectrometer Toroid (BLAST) is a detector 
designed to study in a comprehensive and precise way the spin-dependent 
electromagnetic response in one and few-body systems over a large 
kinematic range using the MIT-Bates South Hall Ring. Currently it is used 
to measure spin-dependent scattering from the elastic to the nucleon 
resonance region for hydrogen and deuterium using the Bates longitudinally 
polarized electron beam at beam energies up to 850 MeV and polarized 
internal gas targets of hydrogen and deuterium. The data provide a 
stringent test of pion electroproduction models that are sensitive to the 
scalar and electric quadrupole amplitudes in the Delta-region. 
This work supported by DOE grants 181021 (UNH), DEFC02-94ER40818 
(MIT-Bates).