Rho Meson Broadening in Hot and Dense Hadronic Matter

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dc.creatorGao, Song
dc.creatorGale, Charles
dc.creatorErnst, Christoph
dc.creatorStöcker, Horst
dc.creatorGreiner, Walter
dc.date1998-12-21
dc.date1999-06-21
dc.date.accessioned2026-07-07T05:42:50Z
dc.date.available2026-07-07T05:42:50Z
dc.descriptionThe modification of the width of rho mesons due to in-medium decays and collisions is evaluated. The decay width is calculated from the imaginary part of the one-loop self-energy at finite temperature. The collision width is related to the cross sections of the $ρ$ + pion and the $ρ$ + nucleon reactions. A calculation based on an effective Lagrangian shows the importance of including the direct $ρπ\toρπ$ scattering which is dominated by the $a_1$ exchange. A large broadening of the spectral function is found, accompanied by a strength suppression at the pole.
dc.description18 pages, 6 Postscript figures, revised version
dc.identifierhttps://arxiv.org/abs/nucl-th/9812059
dc.identifierhttp://arxiv.org/abs/nucl-th/9812059
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/83081
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleRho Meson Broadening in Hot and Dense Hadronic Matter
dc.typetext

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