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Exotic hadrons and hadron-hadron interactions in heavy ion collisions

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arxiv 1301.7261 v1 pith:YTEP376W submitted 2013-01-30 nucl-th

A. Ohnishi , S. Cho , T. Furumoto , T. Hyodo , D. Jido , C. M. Ko , K. Morita , S. H. Lee
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M. Nielsen T. Sekihara S. Yasui K. Yazaki (ExHIC Collaboration)
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keywords lambda-lambdacollisionsdataexotichadron-hadronheavyinteractionsmodel
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We discuss the exotic hadron structure and hadron-hadron interactions in view of heavy ion collisions. First, we demonstrate that a hadronic molecule with a large spatial size would be produced more abundantly in the coalescence model compared with the statistical model result. Secondly, we constrain the Lambda-Lambda interaction by using the recently measured Lambda-Lambda correlation data. We find that the RHIC-STAR data favor the Lambda-Lambda scattering parameters in the range 1/a_0 <= -0.8 fm^{-1} and r_{eff} >= 3 fm.

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