Proceeding of the fifth symposium on science of hadrons under extreme conditions

The fifth symposium on Science of Hadrons under Extreme Conditions, organized by the Research Group for Hadrons Science, Advanced Science Research Center, was held at Tokai Research Establishment of JAERI on March 18 to 20, 2003. The symposium was devoted to discussions and presentations of research results in wide variety of hadron physics such as nuclear matter, hypernuclei, neutron stars, supernovae, nucleosynthesis, heavy-ion reactions, quark matter and quantum chromodynamics to understand various aspects of hadrons under extreme conditions. Thirty three papers on these topics presented at the symposium aroused lively discussions among approximately 50 participants. The concluding remark for the 'research group for hadron science' and the explanation of next project 'research group for manybody theory of hadron systems' were also given. The 33 of the presented papers are indexed individually. (J.P.N.)