Can l(1440) Be a Pseudoscalar Glueball Which Appreciably Mixes with η'(958)?

スポンサーリンク

概要

• 論文の詳細を見る

• We have studied the η-η'-l mixing by using the Gell-Mann-Oakes-Renner type approach to the chiral U(3)×U(3) and also U(4)×U(4) algebras involving anomaly and found that η'-l mixing could be appreciable. The model also predicted (by using PCAC and also sometimes a simple quark counting argument) that while the rate of l→γγ is relatively small, Γ(l→ργ) will be rather large ≃1 MeV. The η-η'-l mixing has also been studied by us using the method of "asymptotic flavor SU(3) symmetry plus the constraint algebras involving the generators of underlying symmetry groups of QCD". Essentially the same conclusion as derived in the first approach has been obtained for the structures of η-η'-l mixing. In this paper, we study the l→γγ and l→ργ decays in the second approach without using quark counting argument. We find a result which is compatible (at least in flavor SU(3) symmetry studied) with that of the first approach. We conclude that a part of the present experimental situation can be understood with the presence of pseudoscalar glueball l(1440) which mixes rather appreciably with the η'. Critical Experiments for the model are also discussed.

• 理論物理学刊行会の論文
• 1987-11-25

著者

• Teshima Tadayuki

  Department Of Applied Physics Chubu Institute Of Technology

• Teshima Tadayuki

  Department Of Physics Chubu University

• Oneda S

  Univ. Maryland Md Usa

• Oneda Sadao

  Center For Theoretical Physics Department Of Physics And Astronomy : University Of Maryland College

• ONEDA Sadao

  Center for Theoretical Physics, Department of Physics and Astronomy University of Maryland:Research Institute for Fundamental Physics, Kyoto University

• TESHIMA Tadayuki

  Department of Physics, Chubu University

• TESHIMA Tadayuki

  Depariment of Applied Physics, Chubu Institute of Technology

関連論文

• General Formulas for Cabibbo-Kobayashi-Maskawa Mixing Angles in Terms of Meson Masses : Particles and Fields
• Axial-Vector Current Anomaly, Decay Constants, and η-η'-η_c Problem in an N-Flavour Quark Model
• An Improved Mass Formula for 0^-.Mesons in Broken SU(4)-Model for New Particles
• "ψ" Particles in the Quartet Model. II
• "ψ" Particles in the Quartet Model
• η⇾2γDecay and Models of Elementary Particles
• Interactions of Baryons in a Relativistic Composite Model
• Decays of "p-Wave Mesons" and a Relativistic Composite Model
• Can l(1440) Be a Pseudoscalar Glueball Which Appreciably Mixes with η'(958)?
• Atmospheric Neutrino Oscillations in Three-Flavor Neutrinos. II
• "x" Particles and Their Radiative Interactions
• Small Violation of Universal Yukawa Coupling and Neutrino Large Mixing
• Algebraic Approach in Quantum Chromodynamics and Electroweak Theory
• Violation of Universal Yukawa Coupling and Quark Masses : Particles and Fields
• Atmospheric Neutrino Oscillations in Three-Flavor Neutrinos : Particles and Fields
• Remarks on Asymptotic SU(2)_L and SU_f(N) Symmetries and Possible Large Mixing between Weak Bosons and J = 1 tt^^- State

もっと見る 閉じる

スポンサーリンク