Measurement of e+e−→ϕ→K+K− cross section with CMD-2 detector at VEPP-2M collider

The process e+e−→ϕ→K+K− has been studied with the CMD-2 detector using about 542 000 events detected in the center-of-mass energy range from 1.01 to 1.034 GeV. The systematic error of the cross section is estimated to be 2.2%. The ϕ(1020) meson parameters in the ϕ→K+K− decay channel have been measured: σ0(ϕ→K+K−)=2016±8±44nb, mϕ=1019.441±0.008±0.080MeV/c2, Γϕ=4.24±0.02±0.03MeV, Be+e−BK+K−=(14.27±0.05±0.31)×10−5.