Observation of the doubly charmed baryon decay Xi(++)(cc) -> Xi(c)'(+)pi(+)

LHCb collaboration

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The Xi(++)(cc) -> Xi('+)(c)pi(+) decay is observed using proton-proton collisions collected by the LHCb experiment at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb(-1). The Xi(++)(cc) -> Xi('+)(c)pi(+) decay is reconstructed partially, where the photon from the Xi('+)(c) -> Xi(+)(c)gamma decay is not reconstructed and the pK(-)pi(+) final state of the Sc+ baryon is employed. The Xi(++)(cc) -> Xi('+)(c)pi(+) branching fraction relative to that of the Xi(++)(cc) -> Xi('+)(c)pi(+) decay is measured to be 1.41 +/- 0.17 +/- 0.10, where the first uncertainty is statistical and the second systematic.
Original languageEnglish
Article number038
Number of pages18
JournalJournal of High Energy Physics
Issue number5
Publication statusPublished - 6 May 2022


  • Charm Physics
  • Flavour Physics
  • Hadron-Hadron Scattering
  • Proton-Proton Scattering

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