Identification and analysis of the np r arrow d. eta. cross section near threshold

Journal Article · Mon Aug 06 04:00:00 EDT 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.65.690· OSTI ID:6361016

Plouin, F; Fleury, P; Wilkin, C ^[1]

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1. Laboratoire National Saturne, 91191 Gif-sur-Yvette (France) University College London, London WC1E6BT (England)

It is demonstrated that existing {ital np}{r arrow}{ital dX} data show a strong signal for the two-body reaction {ital np}{r arrow}{ital d}{eta} near its threshold. The cross sectio n is much larger than that for the analogous {pi}{sup 0} threshold production, but is in accord with a model where production is dominated by the {ital S}{sub 11} {ital N}{sup *}(1535) resonance. The Abashian-Both-Crowe enhancement {ital X}{sub ABC} is a prominent feature of the data. It is shown that the {ital np}{r arrow}{ital dX}{sub ABC} process at 1.9 GeV/{ital c}, which contains most of the 2{pi} production, is almost isotropic, in constrast to theoretical models.

• OSTI ID: 6361016
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 65:6; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BARYON-BARYON INTERACTIONS
BARYONS
BOSONS
CROSS SECTIONS
DATA
DEUTERIUM
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
HYDROGEN ISOTOPES
INFORMATION
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
MESON-MESON INTERACTIONS
MESONS
MEV RANGE
MEV RANGE 100-1000
N BARYONS
N-1535 BARYONS
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
ODD-ODD NUCLEI
PARTICLE INTERACTIONS
PARTICLE KINEMATICS
PION-PION INTERACTIONS
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
SCATTERING AMPLITUDES
STABLE ISOTOPES