The total cross sections

Measurements ofK L -meson and$ absorption c r o s s sections on carbon and copper in the region 1.0-3.3 GeV/c a r e presented.

The total cross sections of «•*• on protons in the momentum interval 2 to 7 GeV/c have been measured with high precision. The error fluctuations from point to point vary between 10 and 25 /*b. Two new pionnucleon resonances, one in each of the two isotopic states, have been found at the following mass values: Mi/2=2.65±0.01GeV and My2 = 2.85±0.01 GeV. A search for other resonances at higher momenta is discussed.

Total cross sections of T* and K* on hydrogen and deuterium were measured in a standard transmission experiment in the momentum range 0.9-2.4 GeV/c a t 50-RIeV/c intervals with statistical precisions in the range of 0.2-1.070. Cross sections for pure isotopic spin states mere obtained using a procedure for the deuterium data which takes into account Fermi motion and the shadow effect.

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