报告摘要: Using the high-quality beam of the Juelich COoler SYnchrotron (COSY) in combination with a pellet target and the hermetic detector WASA, two-pion production and polarized neutron-proton scattering experiments have found compelling evidence for a new state in the two-baryon system with mass 2380 MeV and width 70 MeV. This state – containing six valence quarks – constitutes a so-called dibaryon being either a compact hexaquark configuration or a hadronic molecule. The new particle denoted now d*(2380) has quantum numbers I(JP) = 0(3+). The present knowledge about the d* dibaryon as well as other implications and future experiments are discussed.
报告人履历:
Academic degrees:
1974: PhD at the University of Erlangen, Germany
1983: Habilitation atv the university of Munich, Germany
Positions:
1974: Postdoc at Univ. of Rochester, NY, USA
1976: Postdoc at Univ. of Munich, Germany
1983: Assistant Professor at Univ. of Tuebingen, Germany
1988: Senior Researcher at PSI, Switzerland and Visiting
Professor at Univ. of Chapel Hill, NC, USA
1989: Professor at Univ. of Tuebingen, Germany, including positions as Dean of Faculty, Dean of Studies and Director of Physics Institute
Research Activities:
1971 – 1987: Experiments on nucleon-nucleon, nucleon-nucleus and nucleus-nucleus collisions at nuclear physics facilities in Erlangen, Munich, Karlsruhe, Rochester, McMaster (Canada), TUNL (USA), GANIL (France) and PSI as well as on electron-nuleus scattering at NIKHEF (Amsterdam, Netherlands)
1986 – 2000: Experiments on pion-induced reactions at PSI and TRIUMF
since 1993: Experiments on meson production in nucleon-nucleon collisions at CELSIUS (Uppsala, Sweden) and COSY (research center Juelich, Germany) as well as on photo-induced reactions at MAMI (Mainz, Germany)
联系人: 冒亚军(?maoyj@pku.edu.cn )
