Spin-parity analysis of diffractive np → ( p π − ) p and the question of a parity-change rule

Spin-parity analysis of diffractive np → ( p π − ) p and the question of a parity-change rule

A spin-parity analysis is performed of the low-mass (< or = 1.75 GeV/c/sup 2/) p..pi../sup -/ system in diffractive np ..-->.. (p..pi../sup -/) p using new data at 13 GeV/c and 20 GeV/c. In the context of a Deck-plus-resonances model a good fit to the p..pi../sup -/ angular moments is found on...

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Veröffentlicht in:Phys. Rev., D; (United States) D; (United States), 1976-04, Vol.13 (7), p.1835-1845
Hauptverfasser: Rushbrooke, J. G., Raja, R., Ansorge, R. E., Carter, J. R., Neale, W. W.
Format: Artikel
Sprache:eng
Schlagworte:
645206 - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions, Baryon No. = 1- (-1987)
ANGULAR MOMENTUM
BARYON-BARYON INTERACTIONS
BARYONS
BOSONS
DIFFRACTION MODELS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
MESONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
PARITY
PARTIAL WAVES
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PIONS
PIONS MINUS
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PROTONS
PSEUDOSCALAR MESONS
SPIN
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Zusammenfassung:A spin-parity analysis is performed of the low-mass (< or = 1.75 GeV/c/sup 2/) p..pi../sup -/ system in diffractive np ..-->.. (p..pi../sup -/) p using new data at 13 GeV/c and 20 GeV/c. In the context of a Deck-plus-resonances model a good fit to the p..pi../sup -/ angular moments is found only if the Gribov-Morrison parity-change rule does not hold and spin states up to j = 5/2 are included. In particular the presence of a considerable fraction of spin-parity 1/2/sup -/ state is indicated. (AIP)
ISSN:0556-2821
DOI:10.1103/PhysRevD.13.1835