Search for Anomalons in Projectile Fragments ofAr40Using Plastic Nuclear Track Detectors

We performed an experiment using plastic nuclear track detectors to investigate the phenomenon of enlarged cross sections for projectile fragments of relativistic ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ar}$ nuclei. This effect had been observed within the first few centimeters after fragment emission in Bevalac and cosmic-ray experiments with nuclear emulsion. On the basis of 6444 charge-changing nuclear collisions we conclude that under our experimental conditions no statistically significant anomalous mean free path effect can be observed.