TY - JOUR
T1 - Towards an assessment of the ATLAS data on the branching ratio Γ (Λb0 →ψ (2S) Λ0) / Γ (Λb0 →j /ψ Λ0)
AU - Gutsche, Thomas
AU - Ivanov, Mikhail A.
AU - Körner, Jürgen G.
AU - Lyubovitskij, Valery E.
AU - Santorelli, Pietro
PY - 2015/12/1
Y1 - 2015/12/1
N2 - Recently the ATLAS Collaboration at CERN reported on the measurement of the branching ratio RΛb=Γ(Λb0→ψ(2S)Λ0)/Γ(Λb0→J/ψΛ0). The measured branching ratio RΛb=0.501±0.033(stat)±0.019(syst) was found to be lower than the covariant quark model prediction of RΛb=0.8±0.1 calculated by us recently. We present a detailed analysis of the branching ratio RΛb using a model-independent framework for the heavy-to-light form factors based on results from our previous papers.
AB - Recently the ATLAS Collaboration at CERN reported on the measurement of the branching ratio RΛb=Γ(Λb0→ψ(2S)Λ0)/Γ(Λb0→J/ψΛ0). The measured branching ratio RΛb=0.501±0.033(stat)±0.019(syst) was found to be lower than the covariant quark model prediction of RΛb=0.8±0.1 calculated by us recently. We present a detailed analysis of the branching ratio RΛb using a model-independent framework for the heavy-to-light form factors based on results from our previous papers.
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U2 - 10.1103/PhysRevD.92.114008
DO - 10.1103/PhysRevD.92.114008
M3 - Article
AN - SCOPUS:84950327336
VL - 92
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 11
M1 - 114008
ER -