Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2004-12-02
Physics
Nuclear Physics
Nuclear Theory
LaTex, 6 pages, no figures. to appear in the Proceedings of the International Conference " Complexity in Science and Society "
Scientific paper
Charge and isospin event-by-event fluctuations in high-energy pp-collisions are predicted within the Unitary Eikonal Model ({\bf UEM}), in particular the fluctuation patterns of the ratios of charged-to-charged and neutral-to-charged pions. These fluctuations are found to be sensitive to the presence of unstable resonances, such as $\rho $ and $\omega $ mesons.We predict that the charge-fluctuation observable $D_{UEM}$ should be restricted to the interval $8/3\le D_{UEM}\le 4$ depending on the $\rho /\pi $ production ratio.This result is shown to be compatible with the formation of a hadron gas at RHIC and SPS energies.
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