Has the QCD Critical Point been Signaled by Observations at RHIC ?

Roy A. Lacey, N. N. Ajitanand, J. M. Alexander +6

The shear viscosity to entropy ratio ($\eta /s$) is estimated for the hot and dense QCD matter created in Au+Au collisions at RHIC ($\sqrt{s_{NN}}=200$ GeV). A very low value is found…