1. A study of Bose-Einstein correlations in semi-inclusive and inclusive K+p reactions at 32 GeV/c
- Author
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M. Goossens, E. A. De Wolf, C. Dujardin, G. N. Khromova, S. B. Lugovsky, J. J. Dumont, France-Soviet Union, M. Gysen, H. Blumenfeld, J. P. Laugier, V. A. Riadovikov, I. V. Ajinenko, V. M. Kubic, N.K. Nguyen, N.G. Minaev, Fernand Grard, and Z. Strachman
- Subjects
Physics ,Nuclear physics ,Particle physics ,Pion ,Time evolution ,Bose–Einstein correlations ,Multiplicity (chemistry) ,Charged particle - Abstract
The Bose-Einstein interference effect between pions of equal charge has been studied in K+p reactions at 32 GeV/c. These correlations were analysed in the framework of the Kopylov-Podgoretski-Cocconi model. The values obtained for the Kopylov parameters lie in the range of 0.8 to 1.0 fm forR, a measure of the dimensions of the pion source, and 1 to 2·10−24 s for τ, a parameter characteristic for the time evolution of particle production. The data also indicate that only a fraction λ, between 30 and 60%, of the pions interferes. The parametersR and τ show no variation with charged multiplicity, whereas λ decreases when the number of charged particles increases.
- Published
- 1978
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