Speaker
Lance Labun
(University of Texas at Austin )
Description
Heavy ion collision experiments search for a critical point in the phase diagram of nuclear matter by measuring non-Gaussian moments of baryon number. Universality of critical phenomena predicts that non-Gaussian moments are enhanced near a critical point.
We show that universality near a critical end point implies a characteristic relation between third- and fourth-order baryon susceptibilities $\chi_3$ and $\chi_4$, resulting in a banana-shaped loop when $\chi_4$ is plotted as a function of $\chi_3$ along a freeze-out line. Including the individual enhancements of $\chi_3$ and $\chi_4$ near a critical point, these features may be a consistent set of observations supporting the interpretation of baryon fluctuations data as arising from criticality.
| On behalf of collaboration: | None |
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Authors
Hiroaki Kohyama
Jian Deng
(Shandong University)
Jiunn-Wei Chen
Lance Labun
(University of Texas at Austin )
