Abstract
A broad range of measurements involving BB mesons are performed with the ATLAS experiment at the Large Hadron Collider, of which a selection is discussed in this note. This includes a measurement of the relative B_c^\pmBc± to B^\pmB± production cross section in pppp collisions at a centre-of-mass energy \sqrt{s}s of 8 TeV as well as the latest results on the branching ratios of the rare decays B^0_s\to\mu^+\mu^-Bs0→μ+μ− and B^0\to\mu^+\mu^-B0→μ+μ− using pppp collisions recorded at \sqrt{s}=s= 7, 8 and 13 TeV. Furthermore, accurate measurements of mixing and CP violation in B_s^0 \to J/\psi\, \phiBs0→J/ψϕ decays are performed. The latest results on the CP violating phase \phi_sϕs and other parameters describing the decay obtained at \sqrt{s}=s= 7, 8 and 13 TeV are reported.
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