We offer to your attention a preprint “Kinematic fitting in the restored film information processing (FIP) in pictures from bubble chambers” P10-2023-21 published by the JINR Publishing Department. The authors are Alexander Belyaev (VBLHEP JINR) and Victor Rikhvitsky (MLIT JINR).

The VisualGeoKinFit procedure for kinematic fitting as part of the reconstructed film information processing on photographs of bubble chambers is presented. Photographs of 1-meter hydrogen and 2-meter propane chambers, which were obtained in the measurement sessions of the 60s–90s of the 20th century at JINR, are considered. Photos are digitized on a desktop scanner. Spatial coordinates are reconstructed using the VisualMetro program. Kinematic fitting is performed both immediately after the measurement of the next event and in bulk for all previously measured events.

The investigation has been performed at the Veksler and Baldin Laboratory of High Energy Physics, JINR.

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