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Analysis of. pi. /sup -/p. -->. pi. /sup +/. pi. /sup -/n below 1400 MeV and chiral-symmetry breaking

Aaron, R. ; Arndt, R.A. ; Cammarata, J.B. ; Dicus, D.A. ; Teplitz, V.L.

Phys. Rev. Lett.; (United States), 1980-01, Vol.44:2

United States

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Título:
Analysis of. pi. /sup -/p. -->. pi. /sup +/. pi. /sup -/n below 1400 MeV and chiral-symmetry breaking
Autor: Aaron, R. ; Arndt, R.A. ; Cammarata, J.B. ; Dicus, D.A. ; Teplitz, V.L.
Assuntos: 645103 - High Energy Physics- Particle Interactions & Properties-Experimental- Strong Interactions & Baryon & Meson Properties ; AMPLITUDES ; BARYONS ; BOSONS ; CHIRAL SYMMETRY ; CROSS SECTIONS ; CURRENT ALGEBRA ; ELEMENTARY PARTICLES ; ENERGY RANGE ; FERMIONS ; FUNCTIONS ; GEV RANGE ; GEV RANGE 01-10 ; HADRON-HADRON INTERACTIONS ; HADRONS ; INTERACTIONS ; ISOBAR MODEL ; K MATRIX ; LAGRANGIAN FUNCTION ; MATHEMATICAL MODELS ; MATRICES ; MESON-BARYON INTERACTIONS ; MESON-NUCLEON INTERACTIONS ; MESONS ; NEUTRONS ; NUCLEONS ; PARTIAL WAVES ; PARTICLE INTERACTIONS ; PARTICLE MODELS ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; PION MINUS-PROTON INTERACTIONS ; PION-NUCLEON INTERACTIONS ; PION-PROTON INTERACTIONS ; PIONS ; PIONS MINUS ; PIONS PLUS ; PSEUDOSCALAR MESONS ; SCATTERING AMPLITUDES ; SYMMETRY ; SYMMETRY BREAKING ; TOTAL CROSS SECTIONS ; UNITARITY
É parte de: Phys. Rev. Lett.; (United States), 1980-01, Vol.44:2
Descrição: We construct a threshold K matrix for the dominant PS11(epsilonN) contribution to ..pi../sup -/p ..-->.. ..pi../sup +/..pi../sup -/n that agrees with (1) the result of partial-wave isobar-model analyses above 1300 MeV, (2) the results of a single-arm-spectrometer experiment below 1300 MeV, and (3) the predictions of the effective Lagrangian at threshold. We find that the chiral-symmetry-breaking parameter xi is -0.2 +- 0.3, and that by only 10 MeV above threshold, isobar production accounts for roughly one-third of the total cross section.
Editor: United States
Idioma: Inglês

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Analysis of. pi. /sup -/p. -->. pi. /sup +/. pi. /sup -/n below 1400 MeV and chiral-symmetry breaking

Aaron, R. ; Arndt, R.A. ; Cammarata, J.B. ; Dicus, D.A. ; Teplitz, V.L.

United States

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