2003/02/25 by Henrik Johansson, Johansson, Henrik
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0302225
36 pages, 25 figures, Master of Science Thesis
arxiv created 2003/02/25 · openalex publication_date 2003/02/25 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Particles are either bosons or fermions, which obey Bose-Einstein (BE) or Fermi-Dirac statistics, respectively. In the hadronization process the effects of the former kind are the most important ones, since mesons are the most common products in high-energy collisions. In the phenomenological Lund Model the BE effect is approximated by a semiclassical momentum dependent correlation function, which effectively acts as an attractive force between two mesons. However, the Lund Model does also provide a space-time picture of the hadronization process. Based on this, we have developed a simple extension of the current LUBOEI algorithm that makes use of the production vertex distance between two mesons. Comparisons between the old model and the new one is made for pions according to exponential and Gaussian parameterizations of the BE correlation function. Qualitatively we note a relative suppression of the BE effects in multi-jet events, and especially for pairs of low momenta, with the new algorithm. This trend is in agreement with preliminary experimental data.