Photo- and electro-production of medium mass Lambda-hypernuclei

TL;DR

This paper demonstrates the electromagnetic production of Lambda-hypernuclei in medium-mass targets, highlighting its selectivity for certain excited states and potential to study Lambda single-particle energies and spin-orbit splitting.

Contribution

It introduces a detailed formalism for Lambda-hypernuclei electro-production using DWIA and various models, providing insights into elementary amplitudes and nuclear excitation mechanisms.

Findings

Selective excitation of unnatural parity states demonstrated

Potential to investigate Lambda single-particle energies and spin-orbit splitting

Comparison of elementary amplitude models with experimental data

Abstract

The characteristic and selective nature of the electro-magnetic production of Lambda-hypernuclei in exciting states is demonstrated assuming the medium-mass targets 28Si, 40Ca, and 52Cr. Formalism of DWIA is used adopting the Saclay-Lyon, Kaon-MAID, Adelseck-Saghai, and Williams-Ji-Cotanch models for the elementary amplitudes and various nuclear and hypernuclear wave functions. The elementary amplitudes are discussed in detail presenting their basic properties and comparison with data. The unique features of the electro-magnetic production of Lambda-hypernuclei shown on examples are the slective excitation of unnatural parity highest-spin states (natural parity ones for the LS-closed targets) and a possibilty to investigate the Lambda single-particle energies including a spin-orbit splitting using variety of medium-mass targets.