Should ${\bar p}p\to{\bar\Lambda}\Lambda$ be revived?

TL;DR

The paper advocates for reviving a dedicated antiproton storage ring at Fermilab to significantly enhance sensitivity in CP violation studies in hyperon decay, surpassing previous capabilities like LEAR.

Contribution

It proposes a new experimental facility at Fermilab with technical advancements enabling unprecedented sensitivity in hyperon CP violation measurements.

Findings

Potential sensitivity of 10^{-5} for CP asymmetry in Lambda decays

Technical progress could improve sensitivity by orders of magnitude over LEAR

Reconsideration of a dedicated antiproton storage ring at Fermilab

Abstract

The continued interest of CP violation in hyperon decay (as well as many other physics topics that could be addressed by such a facility) suggests that a dedicated $\bar p$ storage ring at Fermilab ought to be reconsidered. With recent and anticipated technical progress, sensitivity many orders of magnitude beyond that achieved in LEAR may be possible, including 10^{-5} sensitivity for the $\Lambda/{\bar\Lambda}$ CP-asymmetry parameter $A_\Lambda$.