A hypertriton is a type of hypernucleus, formed of a proton, a neutron and any hyperon. The name comes from hyperon, which refers to baryons containing strange quarks, and triton, which refers to the nucleus of tritium. Because low-mass hyperons are longer-lived and easier to create than high-mass hyperons, the most common hypertritons are those containing Lambda baryons – Λ H.