The process e + e − → nn has been studied at the VEPP-2000 e + e − collider with the SND detector in the energy range from threshold up to 2 GeV. As a result of the experiment, the e + e − → nn cross section and effective neutron form factor have been measured.

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In the experiment with the SND detector at the VEPP-2000 e + e − collider the cross section for the process e + e − → ηπ + π − has been measured in the center-of-mass energy range from 1.22 to 2.00 GeV. Obtained results are in agreement with previous measurements and have better accuracy. The energy dependence of the e + e − → ηπ + π − cross section has been fitted with the vector-meson dominance model. From this fit the product of the branching fractions B(ρ(1450) → ηπ + π − )B(ρ(1450) → e + e − ) has been extracted and compared with the same products for ρ(1450) → ωπ 0 and ρ(1450) → π + π − decays. The obtained cross section data have been also used to test the conservation of vector current hypothesis.