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Article
ELECTROWEAK CORRECTIONS TO PARITY-VIOLATING NEUTRAL CURRENT SCATTERING
PHYSICS LETTERS B
  • MJ MUSOLF
  • BR Holstein
Publication Date
1990
Abstract
We analyze the degree to which parity-violating (PV) electroexcitation of the Δ(1232) resonance may be used to extract the weak neutral axial vector transition form factors. We find that the axial vector electroweak radiative corrections are large and theoretically uncertain, thereby modifying the nominal interpretation of the PV asymmetry in terms of the weak neutral form factors. We also show that, in contrast with the situation for elastic electron scattering, the axial N→Δ PV asymmetry does not vanish at the photon point as a consequence of a new term entering the radiative corrections. We argue that an experimental determination of these radiative corrections would be of interest for hadron structure theory, possibly shedding light on the violation of Hara’s theorem in weak, radiative hyperon decays.
Comments
This is the pre-published version which is collected from arXiv. The published version is at http://prd.aps.org/abstract/PRD/v65/i3/e033001
Pages
461-466
Citation Information
MJ MUSOLF and BR Holstein. "ELECTROWEAK CORRECTIONS TO PARITY-VIOLATING NEUTRAL CURRENT SCATTERING" PHYSICS LETTERS B Vol. 242 Iss. 3-4 (1990)
Available at: http://works.bepress.com/barry_holstein/84/