Differential cross-sections of protonium formation in arbitrary excited states in $$\bar p$$ -H collision-H collision

Abstract

For the first time a detailed quantum-mechanical analysis using Born approximation has been presented for the study of protonium (p\(\bar p\)) formation in arbitrary excited states in\(\bar p\)-H(1s) collision. The differential cross-sections for protonium formation in excited states having various principal quantum numbers have been computed for a wide range of incident antiproton energies. It has been noted that the differential cross-sections become appreciable at low relative projectile velocity for states of moderately high excitation.