Baryon Number Fluctuation and the Quark-Gluon Plasma

Abstract

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.

discussion and references added, version to appear in PRC

Cited by in corpus (16)

• Narrowing of the Balance Function with Centrality in Au+Au Collisions at sqrt(sNN) = 130 GeV
• Incident energy dependence of pt correlations at relativistic energies
• Quark Number Fluctuations in a Chiral Model at Finite Baryon Chemical Potential
• Balance Functions from Au+Au, d+Au, and p+p Collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Multifragmentation and the Phase Transition: A Systematic Study of the MF of 1A GeV Au, La, and Kr
• Net-charge probability distributions in heavy ion collisions at chemical freeze-out
• Collision Energy Dependence of $p_{\mathrm{t}}$ Correlations in Au+Au Collisions at RHIC
• Probability distributions in statistical ensembles with conserved charges
• Measuring charge fluctuations in high-energy nuclear collisions
• Correlations and Fluctuations in STAR
• Charged particle fluctuations and microscopic models of nuclear collisions
• Thermodynamic limit and semi--intensive quantities
• Behavior of the charge fluctuation in relativistic nucleus-nucleus collisions
• System size dependence of transverse momentum correlations at $\sqrt{s_{NN}}=$ 62.4 and 200 GeV at the BNL Relativistic Heavy Ion Collider
• Neutral to charged kaon yield fluctuations in Pb$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76TeV
• Partonic Effects in Heavy Ion Collisions at RHIC