Properties of the hadronic jets in π− + p and π− + C interactions at 40 GeV/c

The charged π-meson and proton mixed hadronic jets in the fragmentation regions of π⁻ + p and π⁻ + C interactions at 40 GeV/c are extracted and their properties are investigated. It has been shown that the characteristics of the jets in the π⁻-meson fragmentation region are universal in jet events, do not depend on the type of the target and are defined only from the quark contents of the π⁻ meson. The jet characteristics in the proton fragmentation region are different and depend upon the quark contents of the proton. Mixed hadronic jets with defined values of the electric charge were studied. The resonance structures related to the Δ isobars are discovered in the effective mass distributions of the jets. It has been shown that the small azimuthal angle high-p _T correlations are observed and strong back-to-back correlations exist. The text was submitted by the authors in English.