The cross section of the process e+e− → π+π− has been measured in the Spherical Neutral Detector (SND) experiment at the VEPP-2000 e+e− collider VEPP-2000 in the energy region 525 <$$ \sqrt{s} $$ s < 883 MeV. The measurement is based on data with an integrated luminosity of about 4.6 pb−1. The systematic uncertainty of the cross section determination is 0.8% at $$ \sqrt{s} $$ s > 0.600 GeV. The ρ meson parameters are obtained as mρ = 775.3 ± 0.5 ± 0.6 MeV, Γρ = 145.6 ± 0.6 ± 0.8 MeV, Bρ→e+e− × Bρ→π+π− = (4.89 ± 0.02 ± 0.04) × 10−5, and the parameters of the e+e− → ω → π+π− process, suppressed by G-parity, as Bω→e+e− × Bω→π+π− = (1.32 ± 0.06 ± 0.02) × 10−6 and and ϕρω = 110.7 ± 1.5 ± 1.0 degrees.

No abstract

The cross section for the process e + e − → ωη is measured in the center-of-mass energy range 1.34-2.00 GeV. The analysis is based on data collected with the SND detector at the VEPP-2000 e + e − collider. The measured e + e − → ωη cross section is the most accurate to date. A significant discrepancy is observed between our data and previous BABAR measurement.

The present paper explores the role of erythrocytes in the pathogenesis of vascular diseases. The state of erythrocytes, their ionic composition and structure, and properties of erythrocytes hemoglobin were studied by using laser interference microscopy, Raman scattering spectroscopy, and capillary electrophoresis. In patients suffering from vascular disorders we identified statistically significant changes in the shape of erythrocytes, their ionic composition, and redistribution of hemoglobin throughout cells.

The process e + e − → π 0 γ is studied with the SND detector at the VEPP-2000 e + e − collider. Basing on data with an integrated luminosity of 41 pb −1 recorded in 2010-2012 we measure the e + e − → π 0 γ cross section in the center-of-mass energy range from 1.075 up to 2 GeV. In the range 1.4-2.0 GeV the process e + e − → π 0 γ is studied for the first time.

The e + e − → ηπ + π − cross section is measured at the SND detector in the η decay mode η → 3π 0 . The analysis is based on the data sample with an integrated luminosity of 32.7 pb −1 collected at the VEPP-2000 e + e − collider in the center-of-mass energy range √ s = 1.075 − 2.000 GeV. The data obtained in the η → 3π 0 decay mode are found to be in agreement with the previous SND measurements in the η → γγ mode. Therefore the measurements in the two modes are combined. *