Investigation of electroproduction of 
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 mesons off protons

Kim, Sang-Ho; Nam, Seung-il

doi:10.1103/physrevc.101.065201

Cited by 7 publications

(2 citation statements)

References 56 publications

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“…The ηN and KY (Y = Λ, Σ) channels have been investigated as a first step toward this goal. Recently, the production processes of heavier mesons such as η ′ , ω, and φ have been gaining increasing attention [1][2][3]. Intense activities have also been performed to study the photoproduction reaction of K * mesons [4][5][6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Effects of $N(2000){5/2}^+$ on $γp \to K^+ Λ(1405)$

Zhang,

Huang

2021

Preprint

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The photoproduction reaction of γp → K + Λ(1405) is investigated based on an effective Lagrangian approach at the tree-level approximation with the purpose of understanding the reaction mechanism and extracting the resonance contents and the associated resonance parameters in this reaction. Apart from the t-channel K and K * exchanges, s-channel nucleon (N ) exchange, u-channel Σ, Λ, and Λ(1405) exchanges, and generalized contact term, the exchanges of a minimum number of N resonances in the s channel are taken into account in constructing the reaction amplitudes to describe the experimental data. It is found that by introducing the N (2000)5/2 + resonance exchange in the s channel, one can reproduce the most recent differential cross-section data from the CLAS Collaboration quite well. Further analysis shows that the cross sections of γp → K + Λ(1405) at high energies are dominated by the t-channel K exchange, while the contributions from the s-channel N and N (2000)5/2 + exchanges are rather significant to the cross sections in the near-threshold energy region. Predictions for the beam and target asymmetries for γp → K + Λ(1405) are given.

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Section: Introductionmentioning

confidence: 99%

Effects of $N(2000){5/2}^+$ on $γp \to K^+ Λ(1405)$

Zhang,

Huang

2021

Preprint

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“…In the near threshold energy region, however, the mechanisms arising from mesonexchanges and the excitation of nucleon resonances (𝑁 * ) in the 𝜙𝑁 channel would give non-negligible contributions as demonstrated in Refs. [25][26][27][28][29]. In the present work, we follow the model of Refs.…”

Section: Introductionmentioning

confidence: 99%

Dynamical model of $ϕ$ meson photoproduction on the nucleon and $^4He$

Kim,

Lee,

Nam

et al. 2021

Preprint

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We investigate 𝜙 meson photoproduction on the nucleon and the He 4 targets within a dynamical model approach based on a Hamiltonian which describes the production mechanisms by the Pomeron-exchange, meson-exchanges, 𝜙 radiations, and nucleon resonance excitations mechanisms. The final 𝜙𝑁 interactions are included being described by the gluon-exchange, direct 𝜙𝑁 couplings, and the box-diagrams arising from the couplings with 𝜋𝑁, 𝜌𝑁, 𝐾Λ, and 𝐾Σ channels. The parameters of the Hamiltonian are determined by the experimental data of 𝛾 𝑝 → 𝜙𝑝 from the CLAS Collaboration. The resulting Hamiltonian is then used to predict the coherent 𝜙-meson production on the He 4 targets by using the distorted-wave impulse approximation. For the proton target, the final 𝜙𝑁 rescattering effects, as required by the unitarity condition, are found to be very weak, which supports the earlier calculations in the literature. For the He 4 targets, the predicted differential cross sections are in good agreement with the data obtained by the LEPS Collaboration. The role of each mechanism in this reaction is discussed and predictions for a wide range of scattering angles are presented, which can be tested in future experiments.

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Exclusive photo- and electroproduction of vector mesons off protons

Kim

2023

J. Korean Phys. Soc.

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Investigation of electroproduction of ϕ mesons off protons

Cited by 7 publications

References 56 publications

Effects of $N(2000){5/2}^+$ on $γp \to K^+ Λ(1405)$

Effects of $N(2000){5/2}^+$ on $γp \to K^+ Λ(1405)$

Dynamical model of $ϕ$ meson photoproduction on the nucleon and $^4He$

Exclusive photo- and electroproduction of vector mesons off protons

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