Observation of the Λb0→Λc+K+Kπ decay

LHCb Collaboration

Research output: Indexed journal article Articlepeer-review


The Λb0→Λc+K+Kπ decay is observed for the first time using a data sample of proton-proton collisions at centre-of-mass energies of s=7 and 8TeV collected by the LHCb detector, corresponding to an integrated luminosity of 3fb−1. The ratio of branching fractions between the Λb0→Λc+K+Kπ and the Λb0→Λc+Ds decays is measured to be [Formula presented] where the first uncertainty is statistical, the second systematic and the third is due to the knowledge of the Ds→K+Kπ branching fraction. No structure on the invariant mass distribution of the Λc+K+ system is found, consistent with no open-charm pentaquark signature.

Original languageEnglish
Article number136172
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publication statusPublished - 10 Apr 2021


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