Charge fluctuations and electric mass in a hot meson gas
| Autor: | Volker Koch, M. Döring |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
gas [meson]
Nuclear and High Energy Physics Nuclear Theory Meson resonance [gas] Hadron FOS: Physical sciences Electric charge Resonance (particle physics) fluctuation [charge] susceptibility Virial theorem Nuclear Theory (nucl-th) Nuclear physics mass [rho(770)] electric [mass] unitarity ddc:530 Resummation numerical calculations interaction [pi pi] Physics higher-order [correction] effective Lagrangian virial [expansion] High Energy Physics::Phenomenology SU(3) [symmetry] Charge (physics) relativistic [expansion] quantum [statistics] Quantum electrodynamics Quark–gluon plasma |
| Zdroj: | Physical review / C 76(5), 054906 (2007). doi:10.1103/PhysRevC.76.054906 |
| ISSN: | 1089-490X 0556-2813 |
| DOI: | 10.1103/physrevc.76.054906 |
| Popis: | Net-Charge fluctuations in a hadron gas are studied using an effective hadronic interaction. The emphasis of this work is to investigate the corrections of hadronic interactions to the charge fluctuations of a non-interacting resonance gas. Several methods, such as loop, density and virial expansions are employed. The calculations are also extended to SU(3) and some resummation schemes are considered. Although the various corrections are sizable individually, they cancel to a large extent. As a consequence we find that charge fluctuations are rather well described by the free resonance gas. Comment: 32 pages, 18 figures |
| Databáze: | OpenAIRE |
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