1994/11/30 by I. V. Andreev, M. Plümer, Andreev, I. V. +5
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9411437
12 pages
arxiv created 1994/11/30 · arxiv updated 2009/11/30
The variation of radii, lifetimes, correlation lengths and the chaoticity parameter of particle sources with the collision energy √(s) is studied by analysing and comparing two-particle Bose-Einstein correlation data obtained by the NA22 Collaboration at √(s)=22 GeV and by the UA1-Minimum-Bias Collaboration at √(s)=630 GeV. The UA1-data are found to be inconsistent with a static source, whereas both the data at √(s)=22 GeV and at 630 GeV can be described in an expanding source model. In the latter model, the s-dependence of the data implies an increase of the transverse radius with s and a decrease of the correlation lengths in longitudinal and in transverse direction. The chaoticity parameter increases or remains approximately constant as a function of the CM energy.