Similar topology occurs if there is an inelastic interaction instead of an elastic one with kink. In many cases tracks emerging from the interaction vertex will not be detected due to scanning angle acceptance and no visible track will be seen by the microscope in emulsion after the interaction point. Manual scanning is performed to determine the type of interaction for those tagged as interaction in the previous procedure. All the daughter tracks of white and black kinks are tracked downstream to CET for the momentum measurement. 19 kink events are detected in the scanned area over 110 target plates.
Effort is spent for more precise momentum measurement at present.
Results will be released soon when this measurement and the analysis are finished.