Иосиф Бенционович Хриплович (к 70-летию со дня рождения), Байер В.Н., Барков Л.М., Бондарь А.Е., Диканский Н.С., Дмитриев В.Ф., Золоторев М.С., Кругляков Э.П., Кулипанов Г.Н., Скринский А.Н., Соколов В.В., Фадин В.С., Чириков Б.В.

Experiments on nonlinear magnetic optical (Faraday) rotation on resonance transitions of atomic samarium are described. Measurements were carried out on transitions with different angular momenta of upper and lower states: 1→0, 0→1 and 1→1. Qualitative explanations of observed phenomena are given.

The status of experiments at Novosibirsk on the optical activity induced by violation of spatial and temporal invariance is discussed.

Cross sections have been measured for the production of pions, protons, and antiprotons at zero angle in collisions of 70-GeV protons with Al and W nuclei. Measurements were made at secondary-hadron momenta 0.4, 0.6, 0.8, 1.07, and 2.0 GeV/c. Nuclear emulsion technique was used to detect and identify the secondary hadrons.

The average mass of the K+ and K− was measured in the reaction e+e− → φ → K+K− at the VEPP 2M storage ring as the difference of the energy of the colliding beam and the kaon kinetic energy and was found to be 493.670 ± 0.029 MeV. The energy of the colliding beams was determined by the resonance depolarization method. The kaon kinetic energy was found from range measurements in nuclear emulsion.

The results of a new run of measurements of parity violation in atomic bismuth in the 4S32−2D52 MI-transition at λ=648 nm are presented. The value R= Im(E1M1) measured for the F=6→F′=7 and F=6→F′=6 hyperfine structure components is found to be (-20.6±3.2)×10−8. The average value for all our measurements, 〈R〉=(-20.2±2.7)×10−8, is in agreement with the theoretical prediction obtained in the framework of the standard gauge model with sin2θ=0.25.

The experimental search for the parity-nonconserving optical rotation in atomic bismuth vapour has been performed in Oxford, Seattle and Novosibirsk /1–3/. We present here new results of the Novosibirsk Group.