An Improved Mass Formula for 0^-.Mesons in Broken SU(4)-Model for New Particles

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概要

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• A possible generalization of the Gell-Mann-Oakes-Renner type mass formula for the 16-plet 0^--mesons is proposed by introducing the violation of SU(4) symmetry of the vacuum and the corrections to the decay constants f's of corresponding mesons. The results obtained include, for example, a new sum rule for squared masses of charmed mesons m_F^2 - m_D^2 = λ(m_k^2 - m_π^2) with a parameter λ representing the effects of corrections considered. This sum rule would provide a direct measure for the effects of violation of SU (4) symmetry once the masses of D- and F-mesons are determined precisely. Also discussed are the more involved relations among the masses of D-, F- and η_c-mesons based on the proposed new mass formula. By identifying recently communicated (K^±π^〓) -state at 1.87 GeV with the D^0 -meson, the expected mass values of F^+ -mesons are estimated under various assumptions on the patterns of symmetry.

• 理論物理学刊行会の論文
• 1976-12-25

著者

• Umemura Isao

  Department Of Nuclear Engineering Faculty Of Engineering Kyoto University

• Maki Ziro

  Department of Physics, Kinki University

• Maki Ziro

  Research Institute For Fundamental Physics Kyoto Univcersisty

• TESHIMA Tadayuki

  Department of Applied Physics, Chubu Institute of Technology

• Teshima Tadayuki

  Department Of Applied Physics Chubu Institute Of Technology

• Maki Ziro

  Reseach Institute For Fundamental Physics Kyoto University

• UEMURA Isao

  Department of Nuclear Engineering Kyoto University

• UMEMURA Isao

  Department of Nuclear Engineering, Faculty of Engineering Kyoto University

• TESHIMA Tadayuki

  Depariment of Applied Physics, Chubu Institute of Technology

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