# Recalibration of the binding energy of hypernuclei measured in emulsion experiments and its implications

## TL;DR

This paper recalibrates the binding energy of hypernuclei measured in historical emulsion experiments using current particle mass estimates, significantly impacting light hypernuclei studies and theoretical models.

## Contribution

It provides a systematic recalibration of hypernuclear binding energies from past experiments, improving the accuracy of data used in theoretical research.

## Key findings

- Recalibrated $B_\Lambda$ values are about 100 keV larger for most hypernuclei.
- Recalibration notably affects light hypernuclei, especially the hypertriton.
- Original experimental values are refined, offering better constraints for theoretical models.

## Abstract

The $\Lambda$ separation energy for $\Lambda$-hypernuclei, denoted $B_\Lambda$, measured in 1967, 1968, and 1973 are recalibrated using the current best mass estimates for particles and nuclei. The recalibrated $B_\Lambda$ are systematically larger (except in the case of $^6_\Lambda$He) than the original published values by about 100 keV. The effect of this level of recalibration is very important for light hypernuclei, especially for the hypertriton. The early $B_\Lambda$ values measured in 1967, 1968, and 1973 are widely used in theoretical research, and the new results provide better constraints on the conclusions from such studies.