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Photoproduction of $K^*$ vector mesons off nucleon is investigated within the Regge framework where the electromagnetic vertex of $\gamma K^*K^*$ fully takes into account the magnetic dipole and electric quadrupole moments of spin-1 $K^*$…

High Energy Physics - Phenomenology · Physics 2017-05-24 Byung-Geel Yu , Yongseok Oh , Kook-Jin Kong

The photoproduction process of neutral kaons on a liquid deuterium target is investigated near the threshold region, Egamma = 0.8-1.1 GeV. K0 events are reconstructed from positive and negative pions, and differential cross sections are…

We investigate the photoproduction of Lambda(1405,1/2^-) = Lambda* off the proton target using the effective Lagrangian in the Born approximation. We observed that, depending on the choice of the K* N Lambda* coupling strength, the total…

High Energy Physics - Phenomenology · Physics 2011-07-01 Seung-il Nam , Ji-Hyoung Park , Atsushi Hosaka , Hyun-Chul Kim

The reaction mechanisms for $K\Sigma(1385)$ photoproduction from the reaction $\gamma p \to K^+\Sigma^{0}(1385)$ in the resonance energy region are investigated in a hadronic model. Both contributions from $N$ and $\Delta$ resonances of…

Nuclear Theory · Physics 2008-11-26 Yongseok Oh , Che Ming Ko , K. Nakayama

The nucleon resonances near 2 GeV are investigated through the $\Sigma$(1385) and $\Lambda(1520)$ photoproductions within a Regge-plus-resonance approach based on the new experimental data released by the CLAS Collaboration. The…

Nuclear Theory · Physics 2016-06-22 Jun He

Photoproduction of the $\Lambda^*(1520)$ resonance of spin-parity ${3\over2}^-$ off the proton target is investigated within the Regge framework where the $t$-channel reggeization is applied for the $K(494)+K^*(892)+K_2^*(1430)$ exchanges…

Nuclear Theory · Physics 2020-06-26 Byung-Geel Yu , Kook-Jin Kong

We analyze the electromagnetic production of K^+Lambda and K^0Lambda near their production thresholds by using isobar models. In the K^+Lambda channel we show that the model can nicely describe the available experimental data. In the…

High Energy Physics - Phenomenology · Physics 2015-05-27 T. Mart

We investigate the Lambda(1520,3/2^-)=Lambda* photoproduction off the proton target with the Regge contributions to go beyond the resonance region, in addition to the tree-level Born terms consisting of the s, t, and u channels, and contact…

High Energy Physics - Phenomenology · Physics 2014-11-20 Sueng-il Nam , Chung-Wen Kao

We investigate the photoproduction of Lambda(1520,3/2^-) via the gamma N -> K Lambda^* reaction using the Born approximation and the Rariata-Schwinger vector-spinor field for the spin 3/2 particle. We reproduce the experimental data of the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Seung-Il Nam , Atsushi Hosaka , Hyun-Chul Kim

We investigate photoproduction of $\phi$-mesons off protons within a coupled-channel effective-Lagrangian method which is based on the K-matrix approach. Since the threshold energy of the $K\Lambda(1520)$ channel is close to that of $\phi…

High Energy Physics - Phenomenology · Physics 2014-11-18 S. Ozaki , H. Nagahiro , A. Hosaka , O. Scholten

We investigate photoproduction of the scalar mesona off the nucleon, using the effective Lagrangians and the Regge approach. We first study $f_0(980)$ photoproduction, replacing the Feynman propagator with the Regge ones for the…

High Energy Physics - Phenomenology · Physics 2019-12-06 Je-Hee Lee , Hyun-Chul Kim , Sang-Ho Kim , Hui-Young Ryu , Byung-Geel Yu

We study the mechanism of the associated Lambda-kaon and Sigma-kaon production in nucleon-nucleon collisions over an extended range of near threshold beam energies within an effective Lagrangian model, to understand of the new data on pp…

Nuclear Theory · Physics 2009-11-11 Radhey Shyam

Photoproduction of $ K\Sigma^{*}(1385)$ on the nucleon is investigated within the Regge framework and the reaction mechanism is analyzed based on the data existing in the channels $\gamma p\to K^+\Sigma^{*0}$ and $\gamma n\to…

Nuclear Theory · Physics 2017-06-28 Byung-Geel Yu , Kook-Jin Kong

We investigate the Lambda(1520) photoproduction via the reaction process, gamma N -> K Lambda(1520). We employ the Born approximation and the Rarita Schwinger formalism is used for Lambda(1520). We reproduce the total cross sections and the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Seung-Il Nam , Atsushi Hosaka , Hyun-Chul Kim

Based on previous studies that support the important role of the $N^*(2120) D_{13}$ resonance in the $\gamma p \to K^+ \Lambda(1520)$ reaction, we make a re-analysis of this $\Lambda(1520)$ photoproduction reaction taking into account the…

Nuclear Theory · Physics 2014-02-20 Ju-Jun Xie , En Wang , J. Nieves

The associate $K\Lambda(1520)$ photon and hadronic production in the $\gamma p \to K^+\Lambda(1520)$, $p p \to p K^+ \Lambda(1520)$ and $\pi^- p \to K^0 \Lambda(1520)$ reactions are investigated within the effective Lagrangian approach and…

Nuclear Theory · Physics 2015-06-17 Ju-Jun Xie , En Wang , Bo-Chao Liu , J. Nieves

The $\gamma p \to K^+ \Lambda(1520)$ reaction mechanism is investigated within a Regge--effective Lagrangian hybrid approach based on our previous study of this reaction [Physical Review C89, 015203 (2014)]. Near threshold and for large…

Nuclear Theory · Physics 2014-05-14 En Wang , Ju-Jun Xie , Juan Nieves

We study the gamma p ---> K^+ Lambda(1405) reaction at energies close to threshold using a chiral unitary model where the resonance is generated dynamically from K^-p interaction with other channels constructed from the octets of baryons…

Nuclear Theory · Physics 2009-10-31 J. C. Nacher , E. Oset , H. Toki , A. Ramos

We investigate photoproduction of eta mesons off protons and neutrons within a coupled-channels effective-Lagrangian method which is based on the K-matrix approach. The two-body final channels included are pi-N, eta-N, phi-N, rho-N,…

Nuclear Theory · Physics 2009-09-09 R. Shyam , O. Scholten

Differential cross sections for $\gamma p \to K^+\Lambda(1405)$ and $\gamma p \to K^+\Sigma^0(1385)$ reactions have been measured in the photon energy range from 1.5 to 2.4 GeV and the angular range of $0.8<\cos(\Theta)<1.0$ for the $K^+$…