arXiv:nucl-th/9801025·v2·Nuclear Theory
Parity-Violating Excitation of the \Delta(1232): Hadron Structure and New Physics
N.C. Mukhopadhyay (1)🇺🇸 · M.J. Ramsey-Musolf (2,3)🇺🇸 · S.J Pollock (4)🇺🇸 · J. Liu (1)🇺🇸 · H.-W. Hammer (2,5) ((1) RPI, (2) INT, U. of Washington, (3) U. of Connecticut, (4) U. of Colorado, (5) TRIUMF)🇺🇸
Abstract
We consider prospects for studying the parity-violating (PV) electroweak excitation of the \Delta(1232) resonance with polarized electron scattering. Given present knowledge of Standard Model parameters, such PV experiments could allow a determination of the N -> \Delta electroweak helicity amplitudes. We discuss the experimental feasibility and theoretical interpretability of such a determination as well as the prospective implications for hadron structure theory. We also analyze the extent to which a PV N -> \Delta measurement could constrain various extensions of the Standard Model.
Comments: 43 pages, RevTex, 8 PS figures, uses epsf.sty, rotate.sty, version to appear in Nucl. Phys. A, main points emphasized, some typos corrected