Poles of the. pi. N P sub 11 partial-wave amplitude
Journal Article
·
· Physical Review, D (Particles Fields); (USA)
- Physics Department, Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213 (USA)
We have carried out fits to the energy dependence of the {ital P}{sub 11} partial-wave amplitude as obtained in two different single-energy analyses of {pi}-{ital N} scattering data. Data on inelastic cross sections were also used. The fits used an analytic approximation to the coupled-channel amplitudes suggested by the Dyson equations. From each set of partial-wave data, two resonances were obtained, at roughly 1470 and 1700 MeV. Each of these resonances is associated with a cluster of poles on the Riemann surface.
- DOE Contract Number:
- AC02-76ER03066
- OSTI ID:
- 7057995
- Journal Information:
- Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 42:1; ISSN PRVDA; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BOSON EXPANSION
COUPLED CHANNEL THEORY
CROSS SECTIONS
DYSON REPRESENTATION
ELASTIC SCATTERING
ENERGY DEPENDENCE
HADRON-HADRON INTERACTIONS
INELASTIC SCATTERING
INTERACTIONS
MATHEMATICAL SPACE
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PHASE SPACE
PION-NUCLEON INTERACTIONS
PROPAGATOR
RIEMANN SPACE
SCATTERING
SCATTERING AMPLITUDES
SPACE
UNITARITY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BOSON EXPANSION
COUPLED CHANNEL THEORY
CROSS SECTIONS
DYSON REPRESENTATION
ELASTIC SCATTERING
ENERGY DEPENDENCE
HADRON-HADRON INTERACTIONS
INELASTIC SCATTERING
INTERACTIONS
MATHEMATICAL SPACE
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PHASE SPACE
PION-NUCLEON INTERACTIONS
PROPAGATOR
RIEMANN SPACE
SCATTERING
SCATTERING AMPLITUDES
SPACE
UNITARITY