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Low-m_t charged pion asymmetry enhancement from hadronization of QGP

Jean Letessier·Ahmed Tounsi·Johann Rafelski
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Abstract

We show that in sudden hadronization of QGP a non-equilibrium value of the pion phase space occupancy parameter gamma_q>1 is expected in order to accommodate the entropy excess in QGP and the process of gluon fragmentation. When gamma_q is near to its maximum allowed value, pion overabundance is shown to arise at low $m_\bot$, where the charged pion asymmetry is also amplified. These effects are considered and we show that their magnitude suffices to explain pertinent experimental data obtained in 160-200AGeV Pb- and S- induced reactions.

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Jean Letessier, Ahmed Tounsi, Johann Rafelski. 1999-11-18. Low-m_t charged pion asymmetry enhancement from hadronization of QGP. https://doi.org/10.1016/s0370-2693(00)00088-5

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