"Variant Mass and Width"of the Axial-Vector a_1 and b_1 Mesons and Existence of Hybrid States : Particles and Fields

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概要

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• In a recent experiment on the peripheral π^-p charge-exchange reaction at KEK it has been observed that the a_l meson has very different values of mass and width, compared to the ones thus far obtained with the diffractive process, as well as compared to the. ones recently obtained with the central-collision process. Similarly in the same experiment the b_1 meson observed in the ρη channel has been shown to have an appreciably higher mass and a somewhat narrower width than the respective standard values obtained in the ωπ channel. We argue that these "variant mass and width" of the a_1 and b_l mesons are, respectively, due to interference between the two "doubling" partners with the same quantum numbers, an ordinary qq^^- meson and a hybrid qq^^-g meson. A very simple actual analysis is performed which seems to suggest the validity of our interpretation.

• 理論物理学刊行会の論文
• 1992-07-25

著者

• ISHIDA Shin

  Atomic Energy Research Institute, College of Science and Technology, Nihon University

• ODA Masuho

  Faculty of Engineering, Kokushikan University

• Oda M

  School Of Science And Engineering Kokushikan University

• Oda Masuho

  Faculty Of Engineering Kokushikan University

• ODA Masuho

  School of Science and Engineering, Kokushikan University

• Yamada Kenji

  Department Of Biopharmaceutics Meiji College Of Pharmacy:department Of Radiology:division Of Clinica

• SAWAZAKI Haruhiko

  Atomic Energy Research Institute, College of Science and Technology Nihon University

• Sawazaki Haruhiko

  Atomic Energy Research Institute College Of Science And Technology Nihon University

• Ishida Shin

  Atomic Energy Research Institute College Of Science And Technolgy Nihon University

• Yamada Kenji

  Department Of Biochemistry Kanazawa Medical University

• YAMADA Kenji

  Department of Applied Chemistry, Faculty of Engineering, Chiba University

• ODA Masuho

  Faculty of Engineering. Kokushikan University

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