摘要: During the last two years very interesting results have been collected at LEAR on both the elementary p anti p and the anti p nucleus interactions. A review of all the interesting experimental results already available is far beyo... 展开 During the last two years very interesting results have been collected at LEAR on both the elementary p anti p and the anti p nucleus interactions. A review of all the interesting experimental results already available is far beyond the scope of the present talk. Its topic will be essentially limited to report on the new experimental informations dealing with the knowledge of the fundamental properties of the anti p p elementary interaction and the determination of the characteristics of the anti p nucleus interaction. The results of the anti p p cross sections measured at low momenta by the PS173 and PS172 experiments are discussed. The anti p nucleus elastic scattering angular distributions collected by the PS184 experiment have significantly contributed to define the properties of the p nucleus optical potential and stimulated a lot of microscopic calculations. The results are reviewed. A comparison to the informations obtained from the measurements of X-rays in anti protonic atoms done by the PS176 and PS186 experiments is given. The interpretation of the inelastic scattering data measured for the sup 12 C(anti p, anti p) sup 12 C* system at 47 and 180 MeV for various discrete states is presented: special emphasis will be given to the study of spin-flip transitions to unnatural parity states which would provide significant constant on the isovector tensor component of the N anti N interaction. Status on the experimental study of the (anti p, p) reaction is discussed. (ERA citation 11:049118) 收起