Latest documents http://publikationen.ub.uni-frankfurt.de/index/index/ Mon, 06 Feb 2006 14:14:07 +0200 Mon, 06 Feb 2006 14:14:07 +0200 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2682 Nuclear transport models including density- and momentum-dependent mean-field effects are compared to intranuclear-cascade models and tested on recent data on inclusive p-like cross sections for 800A-MeV La+La. We find a remarkable agreement between most model calculations but a systematic disagreement with the measured yield at 20°, possibly indicating a need for modification of nuclear transport properties at high densities. Jörg Aichelin; Joseph Cugnon; Z. Fraenkel; K. Frankel; Charles Gale; Miklos Gyulassy; D. Keane; C. M. Ko; J. Randrup; A. Rosenhauer; Horst Stöcker; G. Welke; J. Q. Wu article http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2682 Fri, 02 Jun 2006 14:14:07 +0200 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3112 The 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 selfenergy at finite temperature. The collision width is related to the cross sections of the rho + pion and the rho + nucleon reactions. A calculation based on an e ective Lagrangian shows the importance of including the direct pho pi - > pho pi scattering which is dominated by the a1 exchange. A large broadening of the spectral function is found, accompanied by a strength suppression at the pole. http://www.arxiv.org/abs/nucl-th/9812059 Song Gao; Charles Gale; Christoph Ernst; Horst Stöcker; Walter Greiner preprint http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3112 Thu, 08 Dec 2005 11:08:29 +0100 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3141 The modification of the width of the rho meson due to in-medium decays and collisions is evaluated. In high temperature and/or high density hadronic matter, the collision width is much larger than the one-loop decay width. The large width of the meson in matter seems to be consistent with some current interpretations of the e+e mass spectra measured at the CERN/SPS. Song Gao; Charles Gale; Christoph Ernst; Horst Stöcker; Walter Greiner preprint http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3141 Thu, 01 Dec 2005 09:50:55 +0100