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arXiv · 1211.5505

Exotic Behavior of Heavy-Flavored Meson Matter

L. M. Abreu·E. S. Nery·R. Rodrigues da Silva
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Abstract

In this work, we study the thermodynamic behavior of heavy-flavored meson matter in the framework of $(σ,ω)$-meson-exchange model in relativistic mean field theory. We find a decreasing of the effective masses of $D$ and $B$ mesons as the temperature increases. By using the effective mass and maximum value of dissociation temperatures available from lattice QCD, the masses of the bound states $D \bar{D}$ and $B \bar{B}$ are estimated in 2 MeV for both molecules. For the $B$-meson matter, the pressure presents an exotic behavior, being negative for temperatures above 6.6 times the deconfinement transition temperature $T_c$. In addition, the ratio of pressure to energy density is similar to the value predicted for systems that behave as dark energy matter.

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L. M. Abreu, E. S. Nery, R. Rodrigues da Silva. 2012-12-05. Exotic Behavior of Heavy-Flavored Meson Matter. https://arxiv.org/abs/1211.5505

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