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Dileptons from Disoriented Chiral Condensates

Y. Kluger·V. Koch·J. Randrup·X. N. Wang
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Abstract

Disoriented chiral condensates or 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, both in a quantal mean-field treatment and in a semi-classical approximation. We then illustrate the basic features of the dilepton spectrum in a schematic model. We find that dilepton yield with invariant mass near and below $2m_π$ due to the soft pion modes can be up to two orders of magnitude larger than the corresponding equilibrium yield.

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BibTeXRIS

Y. Kluger, V. Koch, J. Randrup, X. N. Wang. 1997-04-10. Dileptons from Disoriented Chiral Condensates. https://doi.org/10.1103/physrevc.57.280

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