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Meson $m_T$-scaling in heavy-ion collisions at SIS energies

E. L. Bratkovskaya·W. Cassing·U. Mosel
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Abstract

We perform systematical studies on transverse-mass spectra of $π^0$, $η$, $ω$, $ϕ$, $K^+$ and $K^-$ mesons for C + C, Ni + Ni, Au + Au collisions at SIS energies within the HSD transport approach. We find that the $m_T$-spectra sensitively reflect the in-medium properties of the mesons. The 'bare mass' scenario leads to a general scaling behaviour for the meson $m_T$-spectra when including a mass shift due to the associate strangeness production threshold for kaons and antikaons whereas a 'dropping' mass scheme violates this $m_T$-scaling. The relative slope parameters, however, provide valuable information about the average meson potentials in the nuclear medium.

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E. L. Bratkovskaya, W. Cassing, U. Mosel. 1997-12-12. Meson $m_T$-scaling in heavy-ion collisions at SIS energies. https://doi.org/10.1016/s0370-2693(98)00213-5

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