2018 Impact factor 4.843
Particles and Fields

Eur. Phys. J. C 21, 557-562 (2001)
DOI: 10.1007/s100520100743

Chaotic sources and percolation of strings in heavy ion collisions

M.A. Braun1, F. del Moral2 and C. Pajares2

1  High-energy department, St. Petersburg University, 198904 St. Petersburg, Russia
2  Departamento de Física de Partículas, Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain

(Received: 19 February 2001 / Revised version: 5 July 2001 / Published online: 10 August 2001 -© Springer-Verlag / Società Italiana di Fisica 2001 )

The chaoticity parameter $\lambda$ of Bose-Einstein correlations is studied as a tool for analyzing the interaction between color strings in multiparticle production at high energies. Different scenarios of this interaction lead to a different behavior of $\lambda$ with energy and atomic number of the participants. Comparison to the present experimental data favors the percolation of strings scenario. The one of its versions in which $\lambda$ shows a peculiar dependence on the string density, very similar to the dependence of the fractional average cluster size, looks particularly attractive.

© Società Italiana di Fisica, Springer-Verlag 2001