A hypertriton is a type of hypernucleus, formed of a proton, a neutron and any hyperon.
Because low-mass hyperons are longer-lived and easier to create than high-mass hyperons, the most common hypertritons are those containing Lambda baryons – 3ΛH.
Its antiparticle, the antihypertriton, is formed of an antiproton, an antineutron and any antihyperon.
The first one was discovered in March 2010 by the STAR detector of the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory.
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