Photoproduction of hypernuclei within the quark-meson coupling model

Abstract

We study the photoproduction of the ^12{_Lambda}B hypernucleus within a fully covariant effective Lagrangian based model, employing Lambda bound state spinors derived from the latest quark-meson coupling model. The kaon production vertex is described via creation, propagation and decay of N*(1650), N*(1710), and N*(1720) intermediate baryonic resonant states in the initial collision of the photon with a target proton in the incident channel. The parameters of the resonance vertices are fixed by describing the total and differential cross section data on the elementary gamma (p, K+) Lambda reaction in the energy regime relevant to the hypernuclear production. It is found that the hypernuclear production cross sections calculated with the quark model based hyperon bound state spinors differ significantly from those obtained with the phenomenological Dirac single particle wave functions.

16 pages, 5 figures, version to appear in Phys. Lett. B

References in corpus (9)

• Cold uniform matter and neutron stars in the quark-mesons-coupling model
• Binding of Hypernuclei in the Latest Quark-Meson Coupling Model
• Kaon photoproduction in a multipole approach
• High Resolution Spectroscopy of 12B_Lambda by Electroproduction
• High Resolution Spectroscopy of 16N_Lambda by Electroproduction
• Photoproduction of eta meson within a coupled-channels K-matrix approach
• Hypernuclear production by ($\gamma ,K^{+}$) reaction within a relativistic model
• Production of hypernuclei with hadronic and electromagnetic probes
• Multipole approach for photo- and electroproduction of kaon

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• Production of cascade hypernuclei via the (K-,K+) reaction within a quark-meson coupling model
• Magnetic moments of the octet, decuplet, low-lying charm, and low-lying bottom baryons in a nuclear medium
• A relativistic description of the A(pi+,K+)_ΛA reaction
• Variations of nuclear binding with quark masses
• In-medium properties of the low-lying strange, charm, and bottom baryons in the quark-meson coupling model
• Binding of hypernuclei, and phtoproduction of $\Lambda$-hypernuclei in the latest quark-meson coupling model
• Production of the H dibaryon via the (K^-,K^+) reaction on a ${}^{12}$C target
• Production of ${\Xi }^{-}$-hypernuclei via the ($K^{-},K^{+}$) reaction in a quark-meson coupling model
• ${\Xi }^{-}$ hyperon and hypernuclear production in the $(K^{-},K^{+})$ reaction on nucleon and nuclei in a field theoretical model