Sub-threshold production of $Σ$(1385) baryons in Al+Al collisions at 1.9$A$ GeV

Details Sub-threshold production of $Σ$(1385) baryons in Al+Al collisions at 1.9$A$ GeV Sub-threshold production of $Σ$(1385) baryons in Al+Al collisions at 1.9$A$ GeV

2007-10-26

arxiv.org/abs/0710.5007v1

Physics

Nuclear Physics

Nuclear Experiment

5 pages, 2 figures. accepted for publication in Phys. Rev. C

Scientific paper

First measurement of sub-threshold $\Sigma$(1385) production is presented. Experimental data are presented for Al+Al reactions at 1.9$A$ GeV measured with the FOPI detector at SIS/GSI. The $\Sigma$(1385)/$\Lambda$ ratio is found to be in good agreement with the transport and statistical model predictions. The results allow for a better understanding of sub-threshold strangeness production and strangeness exchange reaction which is the dominant process for $K^-$ production below and close-to threshold.

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