Publication Date

2001

Comments

This is the pre-published version which is collected from arXiv. The published version is at http://prl.aps.org/abstract/PRL/v87/i20/e201802

Abstract

We analyze the real-photon asymmetry Aγ± for the parity-violating (PV) π± production on the Δ resonance via the reactions γ⃗+p→Δ+→π++n and γ⃗+d→Δ0+p→π-+p+p. This asymmetry is nonvanishing due to a PV γNΔ coupling constant, dΔ±. We argue that an experimental determination of this coupling would be of interest for hadron dynamics, possibly shedding light on the S-wave/ P-wave puzzle in the hyperon nonleptonic decays and the violation of Hara’s theorem in weak radiative hyperon decays.

Pages

-

Volume

87

Issue

20

Journal Title

PHYSICAL REVIEW LETTERS