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arxiv: 1207.3068 · v1 · pith:UMIZLGOVnew · submitted 2012-07-12 · ✦ hep-ph · nucl-th

Restoration of singlet axial symmetry at finite temperature

classification ✦ hep-ph nucl-th
keywords temperaturehighprimerestorationaccomodateaxialcharacterdata
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To accomodate recent RHIC data on eta prime multiplicity, we propose a minimal modification of the Witten-Veneziano relation at high temperature. This renders a significant drop of eta prime mass at high temperature signaling a restoration of the U(1)A, and the Goldstone character of etaprime.

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