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Parity-violating photoproduction of pi(+/-) on the Delta resonance
PHYSICAL REVIEW LETTERS
  • SL Zhu
  • CM Maekawa
  • BR Holstein
  • MJ Ramsey-Musolf
Publication Date
2001
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.
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
Pages
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Citation Information
SL Zhu, CM Maekawa, BR Holstein and MJ Ramsey-Musolf. "Parity-violating photoproduction of pi(+/-) on the Delta resonance" PHYSICAL REVIEW LETTERS Vol. 87 Iss. 20 (2001)
Available at: http://works.bepress.com/barry_holstein/201/