The differential branching fraction of the rare decay Λ b 0 → Λμ+μ− is measured as a function of q2, the square of the dimuon invariant mass. The analysis is performed using proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment. Evidence of signal is observed in the q2 region below the square of the J/ψ mass. Integrating over 15 < q2 < 20 GeV2/c4 the differential branching fraction is measured as dB(Λ0b → Λµ+µ−)/dq2 = =(1.18+0.09−0.08±0.03±0.27)×10−7(GeV2/4)−1, where the uncertainties are statistical, systematic and due to the normalisation mode, Λ b 0 → J/ψΛ, respectively. In the q2 intervals where the signal is observed, angular distributions are studied and the forward-bac...
27 pages, 10 figures - See paper for full list of authorsInternational audienceThe differential bran...
The differential branching fraction of the rare decay Λ0b → Λμ+μ− is measured as a function of q2, t...
The differential branching fraction of the rare decay Λb0 → Λμ+μ− is measured as a function of q2, t...
The differential branching fraction of the rare decay Λ b 0 → Λμ + μ − is measured as a function of...
The differential branching fraction of the rare decay Λ 0 b → Λµ+µ − is measured as a function of q ...
Abstract: The differential branching fraction of the rare decay Λb0 → Λμ+μ− is measured as a functio...
The differential branching fraction of the rare decay Λ0b → Λ μ+ μ− is measured as a function of q^...
The differential branching fraction of the rare decay Λ[0 over b] → Λμ[superscript +] μ[superscript ...
27 pages, 10 figures - See paper for full list of authorsInternational audienceThe differential bran...
The differential branching fraction of the rare decay Λ0b → Λμ+μ− is measured as a function of q2, t...
The differential branching fraction of the rare decay Λb0 → Λμ+μ− is measured as a function of q2, t...
The differential branching fraction of the rare decay Λ b 0 → Λμ + μ − is measured as a function of...
The differential branching fraction of the rare decay Λ 0 b → Λµ+µ − is measured as a function of q ...
Abstract: The differential branching fraction of the rare decay Λb0 → Λμ+μ− is measured as a functio...
The differential branching fraction of the rare decay Λ0b → Λ μ+ μ− is measured as a function of q^...
The differential branching fraction of the rare decay Λ[0 over b] → Λμ[superscript +] μ[superscript ...
27 pages, 10 figures - See paper for full list of authorsInternational audienceThe differential bran...
The differential branching fraction of the rare decay Λ0b → Λμ+μ− is measured as a function of q2, t...
The differential branching fraction of the rare decay Λb0 → Λμ+μ− is measured as a function of q2, t...