Charged Particle Spectra in pi sup - p, pi sup - d and pi sup - C Interactions at 38 GeV/c with Single-Particle High p/sub T/ Trigger

摘要

Angular momentum distributions of charged secondaries from 38 GeV/c pi /sup -/p, pi /sup -/d and pi /sup -/C interactions triggered on at least one particle with p/sub T/ >or approx. 1 GeV/c at an 90 deg pi N c.m.s angle have been investigated with the spectrometer RISK (a streamer chamber placed into a magnet). Transversal momentum spectra of secondaries in the 0.4-2.4 GeV/c p/sub T/-range including triggering particles are quite well fitted with the exponential function for all nuclei studied and for particles of different charges. The azimuthal angle distribution of secondaries (an angle relative to the p/sub T/-tilde of the triggering particle) for both trigger-like and trigger-unlike charges is anisotropic, preferring the direction away from the triggering particle. The mean charge distribution of associated particles is discussed. A small fraction of triggering particles is due to neutral strange particle decays. Many lambda /sup 0/-hyperons were detected among those neutral strange triggers. 7 refs.; 3 refs.; 6 tabs. (Atomindex citation 19:094789)