U. Raich

TL;DR: In this article, the high-energy part of the spectrum was used to deduce branching ratios for the so far unobserved annihilation channels: R(p p →π 0 ω) = (2.38 ± 0.65)%, R( p p → π 0 η ) = (0.82 ± 0.04)% and an upper limit for the π0η′ channel was deduced.

TL;DR: In this paper, a high-precision measurement of the finest structure splitting in the circular 11→10 X-ray transition of the Pb was performed and the experimental value of 1199(5) eV was in agreement with QED calculations.

TL;DR: The γ-ray spectrum after p annihilation at rest was measured in two independent high-statistics runs as discussed by the authors, showing narrow peaks corresponding to masses of 1210, 1638, 1694 and 1771 MeV.

TL;DR: The strong interaction effects in antiprotonic 16O, 17O, and 18O atoms were measured at the CERN LEAR facility, where the shifts ϵ and the widths Γ of the 3D level were determined to be −112±20 eV ( 16 O ), −140±46 eV( 17 O ), −195±20eV ( 18 O ) and 495±45 eV

TL;DR: Strong interaction widths and shifts affecting the 7..-->..6 transition were determined and the effective p-bar-nucleon scattering length was deduced and a unique strong-coupling effect was established in p- bar- /sup 100/Mo.