2015/01/01 by LHCb collaboration, R. Aaij, B. Adeva +743 · 3 citations
Chemistry · Mathematics · Physics and Astronomy · #Baryon #Branching (polymer chemistry) #Branching fraction #Chemistry #Combinatorics #High-Energy Particle Collisions Research #Lambda #Mathematics #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Prime (order theory) #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #hep-ex
paper · pdf · doi:10.1007/jhep09(2015)006
published as JHEP 09 (2015) 006 · 22 pages, 6 figures. v2 is published version (very minor revisions)
openalex publication_date 2015/05/13 · arxiv created 2015/11/03 · arxiv updated 2016/08/10 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/01
A search is performed for the as yet unobserved baryonic Λb0 → Λ η^′ and Λb0 → Λ η decays with 3fb-1 of proton-proton collision data recorded by the LHCb experiment. The B0 → KS0 η^′ decay is used as a normalisation channel. No significant signal is observed for the Λb0 → Λ η^′ decay. An upper limit is found on the branching fraction of B(Λb0 → Λ η^′)<3.1×10-6 at 90% confidence level. Evidence is seen for the presence of the Λb0 → Λ η decay at the level of 3σ significance, with a branching fraction B(Λb0 → Λ η)=(9.3+7.3-5.3)×10-6.