The experiment NA50 studies the strangeness production by means of the BR mu mu sigma_phi/(BR mu mu sigma_rho + BR mu mu sigma_omega) cross-sections ratio in relativistic heavy ion collisions with respect to proton and light ion collisions. New results for Pb+Pb interactions at 158 A GeV/c are presented (1998 data) and analysed with a different method. The BR mu mu sigma_phi/(BR mu mu sigma_phi + BR mu mu sigma_omega) ratio shows an increase with the number of participants, in agreement with previous results. The inverse slope parameter extracted from the Mr universal scaling is also studied.
phi and rho + omega vector-mesons produced in lead-induced collisions
CORTESE, Pietro;RAMELLO, Luciano;SITTA, Mario;
2002-01-01
Abstract
The experiment NA50 studies the strangeness production by means of the BR mu mu sigma_phi/(BR mu mu sigma_rho + BR mu mu sigma_omega) cross-sections ratio in relativistic heavy ion collisions with respect to proton and light ion collisions. New results for Pb+Pb interactions at 158 A GeV/c are presented (1998 data) and analysed with a different method. The BR mu mu sigma_phi/(BR mu mu sigma_phi + BR mu mu sigma_omega) ratio shows an increase with the number of participants, in agreement with previous results. The inverse slope parameter extracted from the Mr universal scaling is also studied.File in questo prodotto:
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