Subthreshold cascade production in heavy ion collisions

Using a gauged flavor SU(3)-invariant hadronic Lagrangian, we have calculated the cross sections for the strangeness-exchange reactions in the Born approximation. These cross sections are then used in the Relativistic Vlasov-Uehling-Uhlenbeck (RVUU) transport model to study Ξ production in Ar+KCl co...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 420; no. 1; pp. 12015 - 8
Main Authors Li, Feng, Chen, Lie-Wen, Ko, Che Ming, Lee, Su Houng
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2013
Subjects
Atomic collisions
Born approximation
Channels
Collisions
Cross sections (physics)
Cross-sections
Energy use
Flavor (particle physics)
Heavy ions
Ionic collisions
Physics
Scattering
Strangeness
Transport
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Summary:Using a gauged flavor SU(3)-invariant hadronic Lagrangian, we have calculated the cross sections for the strangeness-exchange reactions in the Born approximation. These cross sections are then used in the Relativistic Vlasov-Uehling-Uhlenbeck (RVUU) transport model to study Ξ production in Ar+KCl collisions at incident energy of 1.76A GeV and impact parameter b = 3.5 fm. We find that including the contributions of hyperonhyperon scattering channels strongly enhances the yield of Ξ, leading to the abundance ratio which is essentially consistent with the recently measured value of by the HADES collaboration at GSI.
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ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/420/1/012015