Quasifree kaon photoproduction from nuclei in a relativistic approach

Laith Aburaddad, J. Piekarewicz

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We compute the recoil polarization of the lambda hyperon and the photon asymmetry for the quasifree photoproduction of kaons in a relativistic mean-field approximation to the Walecka model. Our motivation for studying polarization observables is threefold. First, polarization observables are more effective discriminators of subtle dynamics than the unpolarized cross section. Second, earlier nonrelativistic calculations suggest that polarization observables are relatively insensitive to distortions effects. Finally, this insensitivity entails an enormous simplification in the theoretical treatment. Indeed, by introducing the notion of a "bound-nucleon propagator" we exploit Feynman's trace techniques to develop closed-form, analytic expressions for all photoproduction observables. Moreover, our results indicate that polarization observables are also insensitive to relativistic effects and to the nuclear target. Yet, they are sensitive to the model parameters, making them ideal tools for the study of modifications to the elementary amplitude - such as in the production, propagation, and decay of nucleon resonances - in the nuclear medium.

Original languageEnglish
Pages (from-to)146041-146047
Number of pages7
JournalPhysical Review C - Nuclear Physics
Volume61
Issue number1
Publication statusPublished - Jan 2000
Externally publishedYes

    Fingerprint

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this