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Velocity of sound in relativistic heavy-ion collisions

Bedangadas Mohanty·Jan-e Alam
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Abstract

We have studied the rapidity distribution of secondary hadrons produced in nucleus-nucleus collisions at ultra-relativistic energies within the ambit of the Landau's hydrodynamical model. A reasonable description of the data can also be obtained by using the Bjorken's hydrodynamical model if the boost invariance is restricted to a finite rapidity range. The sensitivity of the hadronic spectra on the equation of state vis- a -vis the velocity of sound has been discussed. The correlation between the velocity of sound and the freeze-out temperature has been indicated. The effects of the non-zero widths of various mesonic and baryonic degrees of freedom up to the mass value ~ 2.5 GeV is seen to be small.

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Bedangadas Mohanty, Jan-e Alam. 2003-10-20. Velocity of sound in relativistic heavy-ion collisions. https://doi.org/10.1103/physrevc.68.064903

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