Photoproduction of $\Lambda (1405)$ with the $N^{\ast }$ and $t$-channel Regge contributions

Abstract

We investigate the photoproduction of $\Lambda (1405)\equiv {\Lambda }^{\ast }$ hyperon resonance, i.e., $\gamma p\to K^{+}{\Lambda }^{\ast }$, employing the effective Lagrangian approach with the $t$-channel Regge trajectories at tree level. We extensively explore the effects from the nucleon resonances in the vicinity of the threshold ${\sqrt{s}}_{\mathrm{th}}\approx 1900$ MeV, i.e., $N(2000)$, $N(2030)$, $N(2055)$, $N(2095)$, and $N(2100)$, and observe that they are of great importance to reproduce the recent CLAS/Jlab experimental data. Total and differential cross sections are given as numerical results and compared with the experimental data, in addition to the $t$-channel momentum transfer and photon-beam asymmetry. The invariant-mass plots for $\gamma p\to K^{+}{\pi }^0{\Sigma }^0$ via ${\Lambda }^{\ast }$ are also extracted from the two-body process results, showing a qualitative agreement with the data. We also discuss the constituent-counting rule for the internal structure of ${\Lambda }^{\ast }$, resulting in that ${\Lambda }^{\ast }$ appears to be different from a simple three-quark $(uds)$ state.

15 pages, 9 figures

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Cited by in corpus (18)

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• Photoproduction of ${\Lambda }^{\ast }$ and ${\Sigma }^{\ast }$ resonances with $J^P=1/2^{-}$ off the proton
• Production of hidden-charm strange pentaquarks $P_{cs}$ from the $K^{-}p\to J/\psi \Lambda$ reaction
• $K^0\Lambda$ photoproduction off the neutron with nucleon resonances
• Exploring kaon induced reactions for unraveling the nature of the scalar meson $a_0(1817)$
• Decay properties of $N^{\ast }(1895)$
• Pomeron, nucleon-resonance, and $(0^{+},0^{-},1^{+})$-meson contributions in $\varphi$-meson photoproduction
• Effects of $N(2000){5/2}^{+}$ on $\gamma p\to K^{+}\Lambda (1405)$
• Photo-production of lowest ${\Sigma }_{1/2^{-}}^{\ast }$ state within the Regge-effective Lagrangian approach
• Effects of nucleon resonances on $\eta$ photoproduction off the neutron reexamined
• Photo- and electroproduction of $\Lambda (1405)$ via ${\gamma }^{(\ast )}p\to K^{+}{\pi }^{+}{\Sigma }^{-}$
• Prospects for detecting the hidden-strange pentaquarklike state $N^{\ast }(2080)$ in the ${\pi }^{-}p\to \varphi n$ reaction
• Production potential of hidden-strange molecular pentaquarks through the ${\pi }^{-}p\to K^{\ast }\Sigma$ process
• Producing $\Lambda (1405)$ and $\Lambda (1520)$ in ${\pi }^{-}p$ reaction to explore their inner structures
• Polarization of $\Lambda (1405)$ in the $\gamma p\to K^{+}\pi \Sigma$ reaction
• $K^0\Lambda$ Photoproduction with Nucleon Resonances
• Photoproduction $\gamma p\to K^{+}\Lambda (1690)$ in an effective Lagrangian approach
• A search for $B_{s0}^{\ast }$ and $B_{s1}^{\ast }$ through the $K^{-}p$ interaction