Angular analysis of the rare decay Bs0 → ϕμ ⁺ μ ⁻

An angular analysis of the rare decay Bs0→ ϕμ⁺μ⁻ is presented, using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 8.4 fb⁻¹. The observables describing the angular distributions of the decay Bs0→ ϕμ⁺μ⁻ are determined in regions of q², the square of the dimuon invariant mass. The results are consistent with Standard Model predictions. [Figure not available: see fulltext.]