Dilepton from Disoriented Chiral Condensates

Details Dilepton from Disoriented Chiral Condensates Dilepton from Disoriented Chiral Condensates

1997-12-17

arxiv.org/abs/nucl-th/9712061v1

Physics

Nuclear Physics

Nuclear Theory

15 pages, 9 figs, uses epsf and sprocl style files Contribution to Proceedings, International Workshop on Astro Hadron Physics

Scientific paper

10.1016/S0375-9474(98)00362-5

Disoriented chiral condensates are manifested as long wavelength pionic oscillations and their interaction with the thermal environment can be a significant source of dileptons. We calculate the yield of such dilepton production within the linear sigma model and illustrate the basic features of the dilepton spectrum in a schematic model. We find that the dilepton yield with invariant mass near and below $2m_{\pi}$ due to the soft pion modes can be up to two orders of magnitude larger than the corresponding equilibrium yield. We conclude with a discussion on how this enhancement can be detected by present dilepton experiments.

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