These nuclei contain the same number of protons and neutrons as a known nucleus, but also contains one or in rare cases two Lambda particles.
2.
"The new antinucleus, discovered at RHIC's STAR detector, is a negatively charged state of antimatter containing an antiproton, an antineutron, and an anti-Lambda particle.
परिभाषा
an electrically neutral baryon with isotopic spin 1 पर्याय: lambda hyperon,