Temperature dependence of the rho-meson mass and width |
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| Authors: | C A Dominguez M Loewe J C Rojas |
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| Institution: | 1. Institute of Theoretical Physics and Astrophysics, University of Cape Town, 7700, Rondebosch, Cape, RSA
2. Pontificia Universidad Católica de Chile, Santiago, Chile
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| Abstract: | It is shown, to leading order in the virial expansion, that unitarity of the ππ scattering amplitude implies that if the ρ-meson widthΓ ρ(T) increases with temperature, then the ρ-meson massM ρ(T) must also increase. The temperature dependence ofM ρ(T) is explicitly obtained from a simple, but physically motivated, parametrization of theI=J=1 ππ scattering amplitude. |
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