HIGHLIGHTS
- who: R. Aaij, et_al and (LHCb, Collaboration from the (UNIVERSITY) have published the research work: Observation of the Decay u039bb0u2192u039bc+u03c4-u03bdu00afu03c4, in the Journal: (JOURNAL) of 13/05/2022
- how: This result is in agreement with the standard model prediction.
SUMMARY
The branching fraction B(Λ0b → Λ- c τ ν̄τ )=(1.50 0.23)% is obtained, where the third - - - uncertainty is from the external branching fraction of the normalization_channel Λ0b → Λ- c π π π. The - 0 - - 0 - - ratio of semileptonic branching fractions R(Λc ) ≡ B(Λb → Λc τ ν̄τ )=B(Λb → Λc μ ν̄μ ) is derived to be 0.242 . . .
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