Low Energy Behavior of the π-π Phase Shifts

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概要

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• The behavior of the S-wave π-π scattering phase shifts at low energies is investigated in terms of the forward dispersion relations. Our main conclusions are: (1) The experimental data of Walker et al. give a set of values a_0≈0.26 m_<π-1> and a_2≈-0.07 m_<π-1> with a_c/a_2≈-7/2 as one possible solution. (2) They support the existence of a zero below threshold in the I=0 S-wave amplitude.

• 理論物理学刊行会の論文
• 1968-01-25

著者

• Yabuki Haruichi

  Institute Of Physics College Of General Education University Of Tokyo

関連論文

• Many-Pole Amplitudes and Elementarity. I : One Elementary and Some Composite Particles Case
• Scattering Lengths for Complex Angular Momenta
• Low Energy Behavior of the π-π Phase Shifts
• Low-Energy Behaviors of the T=0, S-Wave, π-π Scattering Phase Shift and a Possible Scalar Meson Nonet
• Compositeness Conditions and the Indefinite Nature of the Self-Mass
• Angular Distribution Dependence on Transverse Momentum in High Energy Collisions
• Multichannel Scattering and Equivalence between Four-Fermion and Yukawa Coupling
• Many-Pole Amplitudes and Elementarity. II : The Case of Two Non-Composite Particles
• A Remark on the Condition, Z_3=0 : Case of Many Particles with Identical Quantum Numbers

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