Strangeness enhancement from strong color fields at RHIC

Abstract

In ultra-relativistic heavy ion collisions, early stage multiple scatterings may lead to an increase of the color electric field strength. Consequently, particle production - especially heavy quark (and di-quark) production - is greatly enhanced according to the Schwinger mechanism. We test this idea via the Ultra-relativistic Quantum Molecular Dynamics model (UrQMD) for Au+Au collisions at the full RHIC energy ($\sqrt{s}=200$ AGeV). Relative to p+p collisions, a factor of 60, 20 and 7 enhancement respectively, for $\Omega$ ($sss$), $\Xi$ ($ss$), and $\Lambda$, $\Sigma$ ($s$) is predicted for a model with increased color electric field strength.

References in corpus (5)

• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• The parton to hadron phase transition observed in Pb+Pb collisions at 158 GeV per nucleon
• Strangeness Enhancement in Heavy Ion Collisions - Evidence for Quark-Gluon-Matter ?
• Baryon stopping and hyperon enhancement in the improved dual parton model
• Enhanced antiproton production in Pb(160 AGeV)+Pb reactions: evidence for quark gluon matter?

Cited by in corpus (7)

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• Strangeness Production in Microscopic Transport Models
• Multistrange Hyperon Production on Nuclear Targets
• Understanding $K/\pi$ ratio distribution in the mixed events
• Enhancement of $\varphi$ mesons in Pb+Pb collisions at 158A GeV/c
• Strangeness production in hadronic models and recombination models