R Aaij, ASW Abdelmotteleb, CA Beteta, F Abudinén… - Physical Review Letters, 2022 - APS
The first observation of the semileptonic b-baryon decay Λ b 0→ Λ c+ τ-ν¯ τ, with a
significance of 6.1 σ, is reported using a data sample corresponding to 3 fb-1 of integrated …