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A Precursor of Chiral Symmetry Restoration in the Nuclear Medium

arXiv:nucl-th/9810022 · doi:10.1103/PhysRevLett.82.2840

Abstract

Spectral enhancement near the 2m_π threshold in the I=J=0 channel in nuclei is shown to be a distinct signal of the partial restoration of chiral symmetry. The relevance of this phenomenon with the possible detection of 2π^{0} and 2γin hadron-nucleus and photo-nucleus reactions is discussed.

Revtex, 4 pages, 3 eps figures, title and introduction changed, to appear in Phys. Rev. Lett