Strongly resolved diffraction resonances in positronium formation from C60 in forward direction

Abstract

Positronium formation by capturing from various levels of C60 within 10 degrees around the incoming positron direction is calculated. Results indicate dominant strength of the Ps signal and higher resolution of the diffraction resonances, predicted earlier [P.A. Hervieux, A.R. Chakraborty, H.S. Chakraborty, Phys. Rev. A 95, 020701(R) (2017)], in the forward direction. This raises the possibility of experimental deter-mination of the resonances in angle differential measurements. We further analyze our results by comparing the positron scattering versus positron-electron pairing components of the amplitude for better insights.Graphical abstract