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

Journal Article · Mon Jan 08 00:00:00 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), Vol. 64:2; ISSN 0031-9007
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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PARTICLE IDENTIFICATION
PIONS NEUTRAL
PROTON-NEUTRON INTERACTIONS
DIFFERENTIAL CROSS SECTIONS
DATA ANALYSIS
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ELECTROMAGNETIC INTERACTIONS
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HYDROGEN ISOTOPES
INFORMATION
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MEASURING INSTRUMENTS
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NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
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