Foreword | Zwischenblatt | Exotische Atome: Rosen aus dem Blumengarten der subatomaren Physik | Public talk | Overview: Deeply bound nuclear states of pions and kaons | Deeply bound meson-nuclear states: Theoretical concepts and strategies | Kaonic helium atoms in relation to kaonic nuclear bound states | Strange tribaryons as ¯K-mediated dense nuclear systems | Kaonic deeply bound states, the first experimental results | Search for ppnK‒ deeply bound states with FOPI | Proton induced reactions in search for kaonic nuclear clusters | K‒pp search with FINUDA | K fragments | Pionic and kaonic atoms | Precision determination of the strong interaction shift and width in pionic hydrogen | Hadronic atoms in effective field theory and related aspects | Isospin violation in threshold πN scattering | Precision measurements with kaonic atoms ‒ from DEAR to SIDDHARTA | Spectroscopy of pionic atoms with unstable nuclei | DIRAC latest results | Light pionic atoms ‒ perspectives for precision experiments | The physical interest in Kd and ¯pd atoms | Recent theoretical studies on hadronic atoms | Low-energy K¯N interactions | Measurement of kaonic nitrogen X-ray lines using the gaseous target at DAΦNE | Kinetics of atomic cascade in pionic hydrogen | Electron population during the cascade of kaonic nitrogen atoms | Hyperfine structure in pionic atoms: relativistic calculation | Neutron and muon physics | Measurement of a branching ratio of bound and continuum-state β‒ decay | Direct measurement of charged particle EDMs | Selected aspects of neutron decay | New precision determination of gp and GF : the MuXperiments at PSI | New measurements of muon decay from TWIST | Study of ortho-para effects on muonic-atomic and muonic-molecular processes in dd-μCF | The muonic hydrogen Lamb shift experiment | Low-energy QCD studies with antiprotons | Probing the nuclear medium by antiprotons | Antiprotonic atoms X rays | Novel instrumentation | Silicon drift detectors for hadronic atom research - SIDDHARTA | PANDA detector system | Ultra-slow antiproton beam line ‒ MUSASHI I | Ultra-slow antiproton beam line ‒ MUSASHI II | Characterization of the geometry of an array of CCD pixel detectors | Antiprotonic atoms &amp; antihydrogen | Overview antiproton physics | CPT violation: Theory and phenomenology | Overview of the ASACUSA program | Recent results from ATHENA | Precise spectroscopy of antiprotonic helium and sensitivity of transitions to the antiproton mass | Hyperfine structure of the spectrum of ultracold HD+ ions | Indication of the Wigner threshold law in collisions between antiprotonic helium and hydrogenic molecules | Future facilities | Japan Proton Accelerator Research Complex - J-PARC - | DAΦNE upgrade at LNF-INFN | Muon science in J-PARC | Facility of Antiproton an Ion Research (FAIR) at GSI | FAIR: The GSI future project | Hadron physics at FAIR - the PANDA antiproton experiment | The Antiproton Ion Collider at FAIR | FLAIR, a Facility for Low-energy Antiproton and Ion Research

The international conference "Exotic atoms and related topics 2005" (EXA05) was the second such meeting organized by the Stefan Meyer Institute for Subatomic Physics of the Austrian Academy of Sciences in Vienna. The first meeting in 2002 was an international workshop that lasted three days; 33 talks were presented and about 80 scientists attended. The next conference lasted four days, with 53 speakers and more than 120 participants. The large increase in both speakers and participants shows how dynamic the fields being discussed are. Both meetings presented those fields of physics that can be investigated using exotic atoms, namely, fundamental symmetries and interactions. Examples include the testing of CPT symmetry with atoms containing antiparticles, and the investigation of low-energy QCD with hadronic atoms in low-lying states. For antiprotonic atoms, the spectroscopy of antiprotonic helium is defining the limits of the equality of proton-antiproton charge and mass with increasing accuracy. The formation and spectroscopy of antihydrogen, potentially the best candidate for precision tests of CPT symmetry in atomic systems, is being undertaken by several experiments at the Antiproton Decelerator at CERN, although formation studies are still in their early stages. The future of research into low-energy antiproton physics seems promising, due to the partial approval of the FLAIR facility at the future FAIR facility in GSI. Currently, the fastest developing field is the kaon-nucleon interaction, where the existence of a series of deeply bound states has been predicted. The first experimental evidence for this was shown at the conference and further experiments in progress were described. If confirmed, these so-called "K-clusters will open new possibilities for studying dense cold matter in the laboratory, since calculations predict nuclear densities in these systems to be as high as those in neutron stars.\n\nThe final results of the DEAR experiment were also important for the K-N interaction. Its measurements of the strong interaction-induced shift and broadening of the 1s state of kaonic hydrogen were more precise than earlier measurements by a factor of two. These results have had a strong impact on the theoretical description of low-energy QCD, as seen in several papers read at the conference. Since more new results are expected in these fields within the next two years, it was decided to convene a third EXA meeting in Vienna, again organized by the SMI, in the early fall of 2007 

February 21‒25, 2005 Stefan Meyer Institut für subatomare Physik Austrian Academy of Sciences

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Albert Hirtl

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International Conference on Exotic Atoms and Related Topics