Publication Date

1999

Journal or Book Title

PHYSICAL REVIEW D

Abstract

The importance of resonances for the radiative hyperon decays is examined in the framework of chiral perturbation theory. Low lying baryon resonances are included into the effective theory and tree contributions to these decays are calculated. We find significant contributions to both the parity-conserving and parity-violating decay amplitudes and a large negative value for the asymmetry parameter in polarized Σ+→pγ is found, in agreement with the experimental result αγpΣ+=-0.76±0.08.

Comments

This is the pre-published version which is collected from arXiv. The published version is at http://prd.aps.org/abstract/PRD/v59/i5/e054019

Volume

59

Pages

-

Issue

5

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