Reanalysis of three-pion production data with fully analytic, unitary functions. [Angular momentum analysis, 25 and 40 GeV/c]
Journal Article
·
· Phys. Rev., D; (United States)
The angular momentum analysis of the reaction ..pi../sup -/p ..-->.. ..pi../sup -/..pi../sup +/..pi../sup -/p has been improved by using three-pion-state amplitudes which both satisfy unitarity and have proper analytic structure. The integral equations for these amplitudes and the method of solution used are discussed. The results of fitting the CERN-IHEP data at 25 and 40 GeV/c for ..pi../sup -/p..-->.. ..pi../sup -/..pi../sup +/..pi../sup -/p are almost identical to the earlier fits; in particular, the amplitude for the J/sup P/ = 1/sup +/ state still has no large phase change over the mass region where its magnitude has a maximum (the A/sub 1/ bump). We do, however, point out that there are ambiguities in the fit which make the phase determination less clear than earlier reports indicated.
- Research Organization:
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
- OSTI ID:
- 7304361
- Journal Information:
- Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 16:1; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645206* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. = 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
ANGULAR MOMENTUM
BOSON-EXCHANGE MODELS
DIFFERENTIAL EQUATIONS
ENERGY RANGE
EQUATIONS
FADDEEV EQUATIONS
FUNCTIONS
GEV RANGE
GEV RANGE 10-100
GREEN FUNCTION
HADRON-HADRON INTERACTIONS
INTERACTIONS
ISOBAR MODEL
K MATRIX
MATHEMATICAL MODELS
MATRICES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
OBE MODEL
OPE MODEL
PARITY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PERIPHERAL MODELS
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
SCATTERING AMPLITUDES
SCHROEDINGER EQUATION
SPIN
UNITARITY
WAVE EQUATIONS
Baryon No. = 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
ANGULAR MOMENTUM
BOSON-EXCHANGE MODELS
DIFFERENTIAL EQUATIONS
ENERGY RANGE
EQUATIONS
FADDEEV EQUATIONS
FUNCTIONS
GEV RANGE
GEV RANGE 10-100
GREEN FUNCTION
HADRON-HADRON INTERACTIONS
INTERACTIONS
ISOBAR MODEL
K MATRIX
MATHEMATICAL MODELS
MATRICES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
OBE MODEL
OPE MODEL
PARITY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PERIPHERAL MODELS
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
SCATTERING AMPLITUDES
SCHROEDINGER EQUATION
SPIN
UNITARITY
WAVE EQUATIONS