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Net Charge and Isospin Fluctuations in the World of Elementary Particles

Vesna Mikuta-Martinis
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Abstract

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 $ρ$ and $ω$ 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 $ρ/π$ 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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Vesna Mikuta-Martinis. 2004-12-20. Net Charge and Isospin Fluctuations in the World of Elementary Particles. https://arxiv.org/abs/nucl-th/0412007

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