Isospin analysis of low-energy. pi. N. --> pi pi. N data and chiral-symmetry breaking
Journal Article
·
· Phys. Rev. D; (United States)
The amplitudes for ..pi..N single-pion production are decomposed into four independent isospin amplitudes in the (..pi pi..)N representation. Reaction cross sections for the ..pi../sup -/p and ..pi../sup +/p initial states below total energies of 1370 and 1470 MeV, respectively, are simultaneously fitted with near-threshold measurements of the double-differential cross section d/sup 2/sigma/d..cap omega.. dT for the ..pi../sup +/ produced in ..pi../sup -/p..--> pi../sup +/..pi../sup -/n. The validity of soft-pion calculations for ..pi..N..--> pi pi..N is demonstrated by showing that the threshold s-wave isospin amplitudes can be described consistently by a single value of the chiral-symmetry-breaking parameter.
- Research Organization:
- Department of Physics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
- OSTI ID:
- 6621810
- Journal Information:
- Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 30:3; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Sun Jan 13 23:00:00 EST 1980
· Phys. Rev. Lett.; (United States)
·
OSTI ID:5554864
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· Phys. Rev. Lett., v. 35, no. 21, pp. 1408-1411
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OSTI ID:4106641
Experimental study of the near threshold [pi][sup +][ital p][r arrow][pi][sup +][pi][sup +][ital n] cross section and chiral symmetry
Journal Article
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Sun Oct 31 23:00:00 EST 1993
· Physical Review, D (Particles Fields); (United States)
·
OSTI ID:6132873
Related Subjects
645206* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. = 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BOSONS
CHIRAL SYMMETRY
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
ISOSPIN
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
PARTIAL WAVES
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
S WAVES
SCATTERING AMPLITUDES
SYMMETRY
SYMMETRY BREAKING
Baryon No. = 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BOSONS
CHIRAL SYMMETRY
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
ISOSPIN
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
PARTIAL WAVES
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
S WAVES
SCATTERING AMPLITUDES
SYMMETRY
SYMMETRY BREAKING