Measurement of hyper triton lifetime in Au + Au collisions at the Relativistic Heavy-Ion Collider

The STAR Collaboration

A precise measurement of the hypertriton lifetime is presented. In this letter, the mesonic decay modes ${}_{\mathrm{\Lambda }}^3\mathrm{H}{\to }^3\mathrm{He}+{\pi }^{-}$ and $\mathrm{{^3_Λ}H \rightarrow d…