Ξcc++

Template:Infobox particle The Xi double-charm baryon, denoted as ${\mathrm{\Xi }}_{\mathrm{c}\mathrm{c}}^{++}$, is a Xi baryon composed of two charm quarks and one up quark.

Its discovery by the LHCb Collaboration was announced on 6 July 2017 in Venice, Italy, at the European Physical Society Conference on High Energy Physics. ${\mathrm{\Xi }}_{\mathrm{c}\mathrm{c}}^{++}$ is the first baryon discovered with two heavy quarks (charm and/or bottom) and a light quark. Its mass is 3621 MeV, nearly four times that of the proton.

It was identified when it disintegrated into a ${\mathrm{\Lambda }}_{\mathrm{c}}^{+}$ baryon and three lighter mesons, [[Kaon|KTemplate:Sup]], [[Pion|πTemplate:Sup]] and πTemplate:Sup.

See also

• List of baryons

References

Bibliography

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