Ξcc++

The Xi double-charm baryon, denoted as , is a Xi baryon composed of two charm quarks and one up quark.[1]

Ξcc++
ClassificationFermion
Hadron
Baryon
Mass3621.4 (0.8)
Mean lifetimebetween 5.0×10−14 and 1.0×10−12

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. 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.[2]

It was identified when it disintegrated into a baryon and three lighter mesons, K, π+ and π+.

See also

References

  1. Sébastien Gavois (Nextinpact.com) (2017-07-10), Retour en douceur sur la découverte d'une nouvelle particule, avec deux quarks " charmés ", retrieved 2017-07-10
  2. (CERN, European Organization for Nuclear Research 2017)

Bibliography

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