Abstract

We report a measurement of the lifetime of the c0 baryon using proton-proton collision data at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb-1 collected by the LHCb experiment. The sample consists of about 1000 b-c0-X signal decays, where the c0 baryon is detected in the pK-K- final state and X represents possible additional undetected particles in the decay. The c0 lifetime is measured to be c0=26824102 fs, where the uncertainties are statistical, systematic, and from the uncertainty in the D lifetime, respectively. This value is nearly four times larger than, and inconsistent with, the current world-average value.

Original languageEnglish
Article number092003
Number of pages10
JournalPhysical Review Letters
Volume121
Issue number9
DOIs
Publication statusPublished - 31 Aug 2018

Keywords

  • INCLUSIVE WEAK DECAYS
  • DISCARDING 1/N(C)
  • RULE
  • TOOL

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