The ϕ(1020) meson leptonic width has been determined from the combined analysis of 4 major decay modes of the resonance (ϕ→K+K−,KL0KS0,π+π−π0,ηγ) studied with the CMD-2 detector at the VEPP-2M e+e− collider. The following value has been obtained: Γ(ϕ→e+e−)=1.235±0.006±0.022 keV. The ϕ(1020) meson parameters in four main decay channels have been also recalculated: B(ϕ→K+K−)=0.493±0.003±0.007, B(ϕ→KLKS)=0.336±0.002±0.006, B(ϕ→π+π−π0)=0.155±0.002±0.005, B(ϕ→ηγ)=0.0138±0.0002±0.0002.
@article{arxiv.1010.4878,
title = {Measurement of $\phi$(1020) meson leptonic width with CMD-2 detector at VEPP-2M Collider},
author = {R. R. Akhmetshin and V. M. Aulchenko and V. Sh. Banzarov and L. M. Barkov and S. E. Baru and N. S. Bashtovoy and A. E. Bondar and A. V. Bragin and S. I. Eidelman and D. A. Epifanov and G. V. Fedotovich and N. I. Gabyshev and A. A. Grebenuk and D. N. Grigoriev and F. V. Ignatov and S. V. Karpov and V. F. Kazanin and B. I. Khazin and I. A. Koop and P. P. Krokovny and A. S. Kuzmin and I. B. Logashenko and P. A. Lukin and A. P. Lysenko and K. Yu. Mikhailov and V. S. Okhapkin and E. A. Perevedentsev and A. S. Popov and S. I. Redin and A. A. Ruban and N. M. Ryskulov and Yu. M. Shatunov and B. A. Shwartz and A. L. Sibidanov and I. G. Snopkov and E. P. Solodov and Yu. V. Yudin},
journal= {arXiv preprint arXiv:1010.4878},
year = {2011}
}