Data analysis: (IMAGE) University of Bonn Caption Prof. Dr. Bernhard Ketzer (left) and Mathias Wagner (right) explain a special process in the scattering of high-energy pions on protons, the so-called triangle singularity. Credit Photo: Volker Lannert/Uni Bonn Usage Restrictions This image may be used together with the press release. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.