Dileptons Get Nearly "Blind" to Mass-Scaling Effects In Hot and/or Dense Matter
arXiv:0912.3116
Abstract
Based on BHHRS and further sharpened by discussions with Gerry Brown that I had in October 2008, we arrive at the present assessment of the dilepton saga, namely, that dileptons become "blind" to changes in the vacuum structure of chiral symmetry (such as, e.g., BR scaling at high temperature and/or at high density and hence are {\em not} an appropriate probe for a signal for partial or complete chiral restoration, contrary to what has been widely believed. There, however, are a variety of indirect indications that the scaling notion is qualitatively, if not quantitatively, valid and should work in various low-energy nuclear phenomena, and it is fair to conclude that while there is no direct evidence for the scaling notion, there is {\em none against} it either, in a strong disagreement with what was claimed in CERN Courier November 2009. I will touch briefly on certain observables that could give a clear-cut litmus signal for the vacuum structure of chiral symmetry modified by temperature and/or density.
4 pages, no figures, typos corrected
References in corpus (6)
- Systematics of pion emission in heavy ion collisions in the 1A GeV regime
- Super-soft symmetry energy encountering non-Newtonian gravity in neutron stars
- Nucleon Form Factors and Hidden Symmetry in Holographic QCD
- Why is the nuclear symmetry energy so uncertain at supra-saturation densities?
- Shell model description of the 14C dating beta decay with Brown-Rho-scaled NN interactions
- N-Body Nuclear Forces at Short Distances in Holographic QCD
Cited by in corpus (6)
- Kaons in Dense Half-Skyrmion Matter
- Flavor Symmetry and Topology Change in Nuclear Symmetry Energy for Compact Stars
- A New Topological "Twist" to BR Scaling
- Cold Dense Baryonic Matter and Compact Stars
- Cold Compressed Baryonic Matter with Hidden Local Symmetry and Holography
- Proton Mass, Topology Change and Tensor Forces in Compressed Baryonic Matter