Measurement of np r arrow d. pi. sup 0 cross sections very near threshold

Journal Article · Mon Jan 08 04:00:00 EST 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.176· OSTI ID:7162688

Hutcheon, D A; Korkmaz, E; Moss, G A; Abegg, R; Davison, N E; Edwards, G W.R.; Greeniaus, L G; Mack, D; Miller, C A; Olsen, W C; van Heerden, I J; Yanlin, Y ^[1]

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1. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3 (Canada) Nuclear Research Center, Univesity of Alberta, Edmonton, Alberta, Canada T6G 2N5 Department of Physics, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2 Department of Physics, University of Western Cape, Bellville 7573, (South Africa)

We have measured {ital np}{r arrow}{ital d}{pi}{sup 0} cross sections at eleven beam energies within 16 MeV of threshold. Total cross sections are only 0.67{plus minus}0.10 of the value which has been generally accepted for {ital s}-wave pion production strength near threshold. The differential cross sections are anisotropic at only 1 MeV (c.m.) above threshold. Our results are compared to {pi}{sup +}d{r arrow}pp data and to predictions of two models.

• OSTI ID: 7162688
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 64:2; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
651220 -- Nuclear Properties & Reactions
A=1-5
Experimental
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BARYONS
BASIC INTERACTIONS
BOSONS
CROSS SECTIONS
DATA
DATA ANALYSIS
DELTA BARYONS
DELTA-1232 BARYONS
DEUTERIUM
DIFFERENTIAL CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
HYDROGEN ISOTOPES
INFORMATION
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
MEASURING INSTRUMENTS
MESON-BARYON INTERACTIONS
MESONS
MEV RANGE
MEV RANGE 100-1000
N BARYONS
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
ODD-ODD NUCLEI
P WAVES
PARTIAL WAVES
PARTICLE IDENTIFICATION
PARTICLE INTERACTIONS
PION-DEUTERON INTERACTIONS
PIONS
PIONS NEUTRAL
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PSEUDOSCALAR MESONS
S WAVES
SPECTROMETERS
STABLE ISOTOPES
TOTAL CROSS SECTIONS