Charge symmetry breaking in $\Lambda$ hypernuclei: updated HYP 2015 progress report

TL;DR

This paper reviews recent experimental progress in understanding charge symmetry breaking in Lambda hypernuclei, focusing on new measurements of binding energies and excitation energies that inform theoretical models.

Contribution

It updates the status of charge symmetry breaking studies in Lambda hypernuclei with recent experimental data from MAMI and J-PARC.

Findings

New measurements of $_{\Lambda}^{4}{ m H}$ binding energy and $_{\Lambda}^{4}{ m He}$ excitation energy.

Enhanced understanding of charge symmetry breaking effects in hypernuclear systems.

Progress in connecting experimental results with theoretical models.

Abstract

Ongoing progress in understanding and evaluating charge symmetry breaking in $\Lambda$ hypernuclei is discussed in connection to recent measurements of the $_{\Lambda}^{4}{\rm H}(0^+_{\rm g.s.})$ binding energy at MAMI [A1 Collaboration: PRL 114 (2015) 232501] and of the $_{\Lambda}^{4}{\rm He}(1^+_{\rm exc})$ excitation energy at J-PARC [E13 Collaboration: PRL 115 (2015) 222501].