Induced Second Class Form-factors in Beta Decay
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42 pages
Published in:
- Phys.Rev.D 33 (1986) 1356
Report number:
- ANL-HEP-PR-85-99
Citations per year
Abstract: (APS)
A study of induced second-class currents emerging as a consequence of broken SU(3) flavor symmetry in Σ− β decay is presented. Working within the framework of the MIT bag model, all form factors describing the Σ−→n weak transition are calculated, including QCD vertex corrections to order αs. It is found that the weak-electric dipole form factor g2 is suppressed by confinement effects to be approximately -0.1. This is shown to have a negligible effect on the electron asymmetry αe, and hence strengthens the case that recent data for αe in Σ− β decay are consistent with Cabibbo-model predictions.- SIGMA-: SEMILEPTONIC DECAY
- SEMILEPTONIC DECAY: SIGMA-
- WEAK INTERACTION: SECOND-CLASS CURRENT
- SECOND-CLASS CURRENT: WEAK INTERACTION
- MODEL: BAG
- FORM FACTOR
- QUANTUM CHROMODYNAMICS: CORRECTION
- ELECTRON: ASYMMETRY
- RENORMALIZATION
- Cabibbo model
References(23)
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