Plenary Session VIII – Chair: E. KlemptNo Access
ELECTRO-EXCITATION OF THE Δ. SPHERICAL ASYMMETRY OF THE NUCLEON: THE OOPS/BATES PROGRAM
https://doi.org/10.1142/S0217751X05023190Cited by:0 (Source: Crossref)
Abstract
The issue of hadron deformation has been a subject of intense scientific interest during the last two decades. The detailed study of the N→Δ transition is the best method of experimental investigation of this issue. A brief overview of the experimental and theoretical landscape on the field will be presented followd by a presentation of the most recent results from the Bates N→Δ program. The Bates data yield precise quadrupole to dipole amplitude ratios: EMR=(-2.3±0.3stat+sys±0.6model)% and CMR=(-6.1±0.2stat+sys±0.5model)% for 
. The derived amplitudes give credence to the conjecture of deformation in hadrons favoring, at low Q2, the dominance of mesonic effects.
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