Contributions of hyperon-hyperon scattering to subthreshold cascade production in heavy ion collisions Academic Article

abstract

• Using a gauged flavor SU(3)-invariant hadronic Lagrangian, we calculate the cross sections for the strangeness-exchange reactions YYN (Y=,) in the Born approximation. These cross sections are then used in the relativistic Vlasov-Uehling-Uhlenbeck transport model to study 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 hyperon-hyperon scattering channels strongly enhances the yield of , leading to the abundance ratio -/(+0)=3.3810-3, which is essentially consistent with the recently measured value of (5.61.2-1.7+1.8)10-3 by the HADES Collaboration at GSI. 2012 American Physical Society.

authors

• Ko, Che-Ming

published proceedings

• PHYSICAL REVIEW C

author list (cited authors)

• Li, F., Chen, L., Ko, C. M., & Lee, S. H.

citation count

• 37

complete list of authors

• Li, Feng||Chen, Lie-Wen||Ko, Che Ming||Lee, Su Houng

publication date

• June 2012

publisher

• American Physical Society (APS)  Publisher

published in

• Physical Review C: Nuclear Physics  Journal

keywords

• 51 Physical Sciences
• 5106 Nuclear And Plasma Physics
• 5107 Particle And High Energy Physics
• 5110 Synchrotrons And Accelerators

Digital Object Identifier (DOI)

• 10.1103/PhysRevC.85.064902

URI

• https://hdl.handle.net/1969.1/181977

start page

• 064902

volume

• 85

issue

• 6

URL

• http%3A%2F%2Fdx.doi.org%2F10.1103%2Fphysrevc.85.064902