Precursor of Chiral Symmetry Restoration in the Nuclear Medium

T. Hatsuda; T. Kunihiro; H. Shimizu

doi:10.1103/PhysRevLett.82.2840

Precursor of Chiral Symmetry Restoration in the Nuclear Medium

T. Hatsuda, T. Kunihiro, and H. Shimizu

Phys. Rev. Lett. 82, 2840 – Published 5 April 1999

Abstract

Spectral enhancement near the ${2 m}_{π}$ 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 $2 π^{0}$ and $2 γ$ in hadron-nucleus and photon-nucleus reactions is discussed.

Received 7 October 1998

DOI:https://doi.org/10.1103/PhysRevLett.82.2840

Authors & Affiliations

T. Hatsuda¹, T. Kunihiro², and H. Shimizu³

¹Physics Department, Kyoto University, Kyoto 606-8502, Japan
²Faculty of Science and Technology, Ryukoku University, Seta, Otsu-city, 520-2194, Japan
³Physics Department, Yamagata University, Yamagata 990-8560, Japan