Observation of the decay B0s → ϕπ+π− and evidence for B0 → ϕπ+π−
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The first observation of the rare decay B[superscript 0][subscript s]→ϕπ[superscript +]π[superscript -] and evidence for B[superscript 0]→ϕπ[superscript +]π[superscript -] are reported, using pp collision data recorded by the LHCb detector at center-of-mass energies √s =7 and 8 TeV, corresponding to an integrated luminosity of 3 fb[superscript -1]....
