$A$ dependence of the $\gamma$- and $p$-induced production of the $\Lambda (1520)$ from nuclei

Abstract

Using results of a recent calculation of the $\Lambda (1520)$ in the nuclear medium, which show that the medium width is about five times the free width, we study the A dependence of the $\Lambda (1520)$ production cross section in the reactions $\gamma A\to K^{+}\Lambda (1520)A^{\prime }$ and $pA\to p{K}^{+}\Lambda (1520)A^{\prime }$. We find a sizable A dependence in the ratio of the nuclear cross sections for heavy nuclei with respect to a light one due to the large value of the $\Lambda (1520)$ width in the medium, showing that devoted experiments, easily within reach in present facilities, can provide good information on that magnitude by measuring the cross sections studied here.

14 pages, 5 figures

References in corpus (3)

• phi photo-production from Li, C, Al, and Cu nuclei at Egamma=1.5 - 2.4 GeV
• Photoproduction of pi0-mesons from nuclei
• Unitary coupled channel analysis of the $\Lambda (1520)$ resonance

Cited by in corpus (7)

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• Near-threshold $K^{\ast }(892{)}^{+}$ meson production in the interaction of ${\pi }^{-}$ mesons with nuclei
• Probing the structure of $X(3872)$ in photoproduction
• Pion-induced production of $\Lambda (1520)$ hyperons on nuclei near threshold
• Absorption of phi mesons in near-threshold proton-nucleus reactions
• Medium effects in antikaon-induced ${\Xi }^{-}$ hyperon production on nuclei near threshold