The λ energy dependence deduced from Bose — Einstein correlations of ππ pairs produced in pp collisions

International Conference on Particle Physics and Astrophysics

Alexander, G.^1 ; Okorokov, V.^2

School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel-Aviv University, Tel-Aviv

69978, Israel^1

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe highway 31, Moscow

115409, Russia^2

关键词: Bose-Einstein correlations;    Energy dependence;    Energy ranges;    Exponential distributions;    One dimension;    Particle multiplicity;    Pion sources;    Pp collisions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/675/2/022001/pdf
DOI  :  10.1088/1742-6596/675/2/022001

来源: IOP

【 摘 要 】

The energy dependence of the chaoticity parameter λ, derived from Bose-Einstein correlations (BEC) of pion-pairs produced in pp collisions, is investigated. Considered is the one dimension (1D) of the BEC analysis in terms of a Gaussian and / or exponential distributions. The experimental data are examined in terms of the relation between the pion sources and the BEC dimension R which in turn are deduced from the charged outgoing particle multiplicity. This approach follows the λ general energy behavior as obtained from the 1D BEC analyzes of the pp collision data. Prediction for the λ dependence on energy is obtained over a multi- TeV energy range based on a model of independent pion sources. The decrease of the λ value with energy expected within the framework of this approach is supported by the experimental findings.