Baryon Number Fluctuation and the Quark-Gluon Plasma

Details Baryon Number Fluctuation and the Quark-Gluon Plasma Baryon Number Fluctuation and the Quark-Gluon Plasma

2001-03-27

arxiv.org/abs/nucl-th/0103071v2

Phys.Rev. C64 (2001) 041901

Physics

Nuclear Physics

Nuclear Theory

discussion and references added, version to appear in PRC

Scientific paper

10.1103/PhysRevC.64.041901

We show that $\omega_B$ or $\omega_{\bar B}$, the squared baryon or antibaryon number fluctuation per baryon or antibaryon, is a possible signature for the quark-gluon plasma that is expected to be created in relativistic heavy ion collisions, as it is a factor of three smaller than in an equilibrated hadronic matter due to the fractional baryon number of quarks. Using kinetic equations with exact baryon number conservation, we find that their values in an equilibrated matter are half of those expected from a Poisson distribution. Effects due to finite acceptance and non-zero net baryon number are also studied.

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