constituent quark scaling of strangeness enhancement in heavy-ion collisions

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ID: 246639
2013
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Abstract
In the framework of a nuclear overlap model, we estimate the number of nucleons and quark participants in proton-proton, proton-nucleus, and nucleus-nucleus collisions. We observe the number of nucleon- ( N N -part -) normalized enhancement of multistrange particles, which shows a monotonic increase with centrality and turns out to be a centrality-independent scaling behavior when normalized to number of constituent quarks participating in the collision ( N q -part ). In addition, we observe that the N q -part -normalized enhancement, when further normalized to the strangeness content, shows a strangeness-independent scaling behavior. This holds good at top RHIC energy. However, the corresponding SPS data show a weak N q -part -scaling. Moreover, the strangeness scaling seems to be violated at top SPS energy. This scaling at RHIC indicates that the partonic degrees of freedom play an important role in the production of multistrange particles. Top SPS energy, in view of the above observations, shows a coexistence of hadronic and partonic phases. Therefore we give a comparison of data with HIJING, AMPT, and UrQMD models to understand the particle production dynamics at different energies.
Reference Key
behera2013advancesconstituent Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Nirbhay K. Behera;Raghunath Sahoo;Basanta K. Nandi
Journal biotechnology reports (amsterdam, netherlands)
Year 2013
DOI
10.1155/2013/273248
URL
http://dx.doi.org/10.1155/2013/273248
Keywords
physics

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