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1960•Physical Review LettersRequires access

Isotopic Spin Dependence of the Pion-Nucleon Higher Resonance

Ronald F. Peierls

Open publisher page 13 citations

Abstract

A discussion is given concerning the higher resonances in pion-nucleon interactions. Methods of understanding the simultaneous occurrence of the second and third resonances in both the T = 1/2 and T =3/2 isotopic spin states are reviewed. The distributions for the n pi /sup +/ pi /sup -/ events are discussed. Present data seem consistent with a picture in which the final states are dominated by the two types of final-state interaction and the amplitude phase is independent of T, but the way in which the final states are generated is not understood. (B.O.G.)

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A discussion is given concerning the higher resonances in pion-nucleon interactions. Methods of understanding the simultaneous occurrence of the second and third resonances in both the T = 1/2 and T =3/2 isotopic spin states are reviewed. The distributions for the n pi /sup +/ pi /sup -/ events are discussed. Present data seem consistent with a picture in which the final states are dominated by the two types of final-state interaction and the amplitude phase is independent of T, but the way in which the final states are generated is not understood. (B.O.G.)

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Available abstract

A discussion is given concerning the higher resonances in pion-nucleon interactions. Methods of understanding the simultaneous occurrence of the second and third resonances in both the T = 1/2 and T =3/2 isotopic spin states are reviewed. The distributions for the n pi /sup +/ pi /sup -/ events are discussed. Present data seem consistent with a picture in which the final states are dominated by the two types of final-state interaction and the amplitude phase is independent of T, but the way in which the final states are generated is not understood. (B.O.G.)

Key concepts: Pion, Nucleon, Physics, Resonance (particle physics), Nuclear physics, Spin (aerodynamics), Atomic physics, Thermodynamics

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