Comprehensive analysis of the γp → K⁺ Σ⁰(1385), γn → K⁺ Σ^-(1385), and π⁺ p → K⁺ Σ⁺(1385) reactions

2025/03/04 by Wang, Ai-Chao, Wei, Neng-Chang, Huang, Fei
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)

paper · doi:10.48550/arxiv.2503.02295

Abstract

A comprehensive analysis of all available data on cross sections and spin-dependent observables for the γp → K⁺ Σ⁰(1385), γn → K⁺ Σ^-(1385), and π⁺ p → K⁺ Σ⁺(1385) reactions is performed within an effective Lagrangian framework. In addition to the s-channel N exchange, t-channel K and K^∗ exchanges, u-channel Λ, Σ, and Σ^∗ exchanges, and the interaction current, the s-channel contributions from a minimal set of N and Δ resonances are included in constructing the reaction amplitudes to describe the data. The analysis reveals that all available data for both photon- and hadron-induced KΣ(1385) production reactions can be simultaneously and satisfactorily reproduced when the contribution of the s-channel Δ(1930)5/2^- resonance is taken into account. The reaction mechanisms, particularly the resonance contributions in each considered reaction, are thoroughly analyzed and discussed in detail.

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