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29 March 2024
 
  » arxiv » nucl-ex/9909006

 Article overview


Double polarization experiments at intermediate energy
H. Schmieden ;
Date 14 Sep 1999
Journal Nucl.Phys. A663 (2000) 21-28
Subject nucl-ex
AbstractAt modern electron accelerators with highly polarized, intense, high duty factor beams double polarization coincidence experiments became feasible with good statistical accuracy. The strong potential towards the precise determination of small nucleon structure quantities is illustrated by two recent examples from MAMI. The measurement of $G_E^n$ in the quasifree reaction $D(vec e, e’vec n)p$ lead to a new parametrization of $G_E^n$ which is significantly above the previously preferred one from elastic $e-D$ scattering. A $p(vec e, e’vec p)pi^0$ experiment at the energy of the $Delta$ resonance yields preliminary results for the longitudinal quadrupole mixing. Both experimental errors and model uncertainties are complementary to unpolarized measurements.
Source arXiv, nucl-ex/9909006
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