Machner, H.Abdel-Samad, S.Bojowald, J.Chatterjee, A.Roy, B. J.2022-04-082022-04-082003Progress in Particle and Nuclear Physics, 2003. Vol. 50: pp. 605-614http://hdl.handle.net/123456789/243713695 bytestext/htmlenup-down quark mass differencesisospin symmetry breakingangular distributionspion production reactionsSearch for up-down quark mass differences via isospin symmetry breakingArticle