Editing Hypernucleus (section)

===Hypertriton===
The simplest hypernucleus is the [[hypertriton]] ({{PhysicsParticle|[[Hydrogen|H]]|TL=3|BL=Λ}}), which consists of one proton, one neutron, and one Λ hyperon. The Λ in this system is very loosely bound, having a [[separation energy]] of 130&nbsp;keV and a large radius of 10.6&nbsp;[[Femtometer|fm]],{{sfn|Tolos|Fabbietti|2020|p=53}} compared to about {{val|2.13|u=fm}} for the [[deuteron]].<ref>{{cite journal |last1=Tiesinga |first1=Eite |last2=Mohr |first2=Peter J. |last3=Newell |first3=David B. |last4=Taylor |first4=Barry N. |title=CODATA Recommended Values of the Fundamental Physical Constants: 2018 |journal=Journal of Physical and Chemical Reference Data |date=1 September 2021 |volume=50 |issue=3 |pages=033105 |doi=10.1063/5.0064853 |pmid=36733295 |pmc=9890581 |bibcode=2021JPCRD..50c3105T |language=en |issn=0047-2689}}</ref>

This loose binding would imply a lifetime similar to a free Λ. However, the measured hypertriton lifetime averaged across all experiments (about {{val|206|15|13|u=ps}}) is substantially shorter than predicted by theory, as the non-mesonic decay mode is expected to be relatively minor; some experimental results are substantially shorter or longer than this average.{{sfn|Tolos|Fabbietti|2020|pp=52–53}}<ref>{{cite journal |author=ALICE Collaboration |title=<math>^{3}_{\Lambda}\mathrm{H}</math> and <math>\overline{^{3}_{\Lambda}\mathrm{H}}</math> lifetime measurement in Pb–Pb collisions at s NN = 5.02 TeV via two-body decay |journal=Physics Letters B |date=October 2019 |volume=797 |pages=134905 |doi=10.1016/j.physletb.2019.134905| s2cid=204776807 |doi-access=free |arxiv=1907.06906 }}</ref>