In the present article, the latest status of the study for double strangeness nuclei with nuclear emulsion techniques is presented. The J-PARC E07 experiment which investigates the double-strangeness nuclear system with the (K -, K + ) reaction has been started at the Hadron Experimental Facility in Japan Proton Accelerator Research Complex (J-PARC). In the 1st physics run scheduled on 2016 June, ≃20% of the total number of emulsion sheets will be irradiated by the K -beam. A new method, "overall scanning" with "vertex picker", has been developed to quickly scan tracks of interest in the whole volume of emulsion sheets. This method was applied to emulsion sheets used in the KEK-PS E373 experiment, and a candidate of a nuclear bound system of --14 N was successfully observed.
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