Identified pion interferometry in heavy-ion collisions at CERN

Autor: S. Esumi, J. P. Sullivan, H. Bøggild, T. Kobayashi, W.E. Sondheim, Yasuo Miake, Kenta Shigaki, J. Boissevain, B. V. Jacak, S. U. Pandey, J. Downing, M. Sarabura, M. Potekhin, K. H. Hansen, T. Ikemoto, S. Nishimura, M. Cherney, M. Murray, T. Humanic, C.W. Fabjan, H. Sletten, T. Sugitate, B. Lörstad, Y. Sumi, N. Maeda, A. Sakaguchi, F. Piuz, A. Franz, Gilbert Poulard, W.J. Willis, S. Nagamiya, R. A. Kvatadze, Y. Y. Lee, M. Leltchouk, D.C. Rahm, J. Simon-Gillo, J. Dodd, A. Miyabayashi, J. M. Rieubland, Venetios Polychronakos, H. W. Van Hecke, H. Kalechofsky
Rok vydání: 1993
Předmět:
Zdroj: Physics Letters B. 302:510-516
ISSN: 0370-2693
DOI: 10.1016/0370-2693(93)90435-k
Popis: π + π + correlations from S + Pb collisions at 200 GeV/ c per nucleon, measured by the focusing spectrometer of the NA44 experiment at CERN, are presented. The large data set, particularly at small values of Q inv , allows determination of the detailed shape of the correlation function. We construct the background by event mixing, and correct for resolution, Coulomb interaction, and distortion of single-particle spectra which produce effects large compared to the statistical errors at small Q inv . An exponential, rather than gaussian, source distribution is slightly favoured, but both are statistically acceptable.
Databáze: OpenAIRE