Pion-induced production of $\Lambda (1520)$ hyperons on nuclei near threshold

Abstract

We study the pion-induced inclusive $\Lambda (1520)$ hyperon production from nuclei near threshold within a nuclear spectral function approach accounting for incoherent primary ${\pi }^{-}$ meson--proton ${\pi }^{-}p\to K^0\Lambda (1520)$ production processes. We calculate the absolute differential and total cross sections for the production of $\Lambda (1520)$ hyperons off carbon and tungsten nuclei at laboratory angles of 0${}^{\circ }$--10${}^{\circ }$, 10${}^{\circ }$--45${}^{\circ }$ and 45${}^{\circ }$--85${}^{\circ }$ by ${\pi }^{-}$ mesons with momentum of 1.7 GeV/c as well as their relative (transparency ratio) differential and integral yields from these nuclei within four scenarios for their total in-medium width. We demonstrate that these absolute observables, contrary to the relative ones, reveal some sensitivity to the $\Lambda (1520)$ in-medium width. Therefore, their measurement in a dedicated experiment at the GSI pion beam facility will allow to shed light on this width.

arXiv comment14 pages

References in corpus (20)

• Strangeness in nuclear physics
• Hadron properties in the nuclear medium
• Hadrons in strongly interacting matter
• Meson-nucleus potentials and the search for meson-nucleus bound states
• Hyperons in nuclear matter from SU(3) chiral effective field theory
• Etaprime and Eta Mesons with Connection to Anomalous Glue
• J/Psi mass shift in nuclear matter
• $J/\Psi$-nuclear bound states
• Antikaons and hyperons in nuclear matter with saturation
• Subthreshold K+ Meson Production in Proton-Nucleus Reactions
• Anti-strange meson-baryon interaction in hot and dense nuclear matter
• Strong absorption of hadrons with hidden and open strangeness in nuclear matter
• $\Lambda (1520)$ and $\Sigma (1385)$ in the nuclear medium
• The role of hidden-charm pentaquark resonance $P_c^{+}(4450)$ in $J/\psi$ photoproduction on nuclei near threshold
• $A$ dependence of the $\gamma$- and $p$-induced production of the $\Lambda (1520)$ from nuclei
• Momentum dependence of pion-induced $\varphi$ meson production on nuclei near threshold
• Medium effects in $\Lambda K^{+}$ pair production by 2.83 GeV protons on nuclei
• $\Lambda (1520)$ at finite density
• Testing the Lambda(1520) hyperon in-medium width in near-threshold proton-nucleus reactions
• Near-threshold ${\eta }^{\prime }$ meson production in ${\pi }^{-}A$ reactions

Cited by in corpus (3)

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