Possible evidence of disoriented chiral condensates from the anomaly in Ω. and -Ω abundances at the super proton synchrotron |
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Authors: | J I Kapusta S M H Wong |
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Institution: | (1) School of Physics and Astronomy, University of Minnesota, MN 55455 Minneapolis, USA;(2) Department of Physics, Ohio State University, OH 43210 Columbus, USA |
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Abstract: | No conventional picture of nucleus-nucleus collisions has yet been able to explain the abundance of Ω and -Ω. in central collisions
between Pb nuclei at 158 A GeV at the CERN SPS. We argue that such a deviation from predictions of statistical thermal models
and numerical simulations is the evidence that they are produced as topological defects in the form of skyrmions arising from
the formation of disoriented chiral condensates. The estimated domain size falls in the right range to be consistent with
the so far non-observation of disoriented chiral condensate (DCC) from the distribution of neutral pions. |
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Keywords: | Hyperon production disoriented chiral condensates heavy-ion collisions skyrmions |
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