Implications of Four-Quark Scalar Mesons with Charm

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概要

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• The possibility of the existence of four-quark scalar mesons with charm D^^~+(cu<ud>^^-) and D^^~(cd<ud>^^~) is studied in the framework of SU(6)_<cs>, a combined symmetry of color and spin, with a binding potential due to a gluon magnetic interaction. We observe that the masses of the mesons range from 1.8GeV and 2.4GeV and that the mesons are produced dominantly in the forward region by neutrino reactions. If the masses of D^^~ were smaller than m_D+m_π, the mesons will be stable and the lifetimes will be the same order in magnitude with those of D mesons. Thus detection of a dual structure in mass and lifetime for charmed mesons, and of a decay D^^~⇾D+2γ with an appreciable (at least a few percent) branching ratio will provide a confirmation of the existence of the four-quark scalar mesons.

• 理論物理学刊行会の論文
• 1982-05-25

著者

• MATSUDA Masahisa

  Department of Physics and Astronomy, Aichi University of Education

• Nakagawa Masami

  Department Of Immunology Kurume University School Of Medicine

• Ogawa Shuzo

  Department Of Physics Nagoya University

• Ogawa Shuzo

  Department Of Physics Hiroshima University

• IZAWA Ken-Iti

  Department of Physics, Kyoto University

• IZAWA Kazuyoshi

  Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University

• Matsuda Masahisa

  Department Of Physics Aichi University Of Education

• Nakagawa Masami

  Department Of Civil Engineering Tohoku University

• Izawa Kazuyoshi

  Department Of Applied Chemistry And Biochemistry Faculty Of Engineering Kumamoto University

• MATSUDA Masahisa

  Department of Physics, Aichi University of Education

• OGAWA Shuzo

  Department of Physics, Nagoya University

• IZAWA KENICHI

  Department of Physics,University of Tokyo

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