Near-threshold proton-induced neutral pion production from deuterium

Journal Article · Sat Aug 01 04:00:00 EDT 1992 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.46.397· OSTI ID:7286564

Pickar, M A ^[1]; Bacher, A D; Meyer, H O; Pollock, R E ^[2]; Emery, G T ^[3]

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1. Department of Physics Astronomy, University of Kentucky, Lexington, Kentucky 40506 (United States)
2. Department of Physics, Indiana University, and Indiana University Cyclotron Facility, Bloomington, Indiana 47405 (United States)
3. Physics Department, Bowdoin College, Brunswick, Maine 04011 (United States)

Total cross sections and angular distributions for the differential cross section and analyzing power of the reaction {sup 2}H({ital {rvec p}},{pi}{sup 0}){sup 3}He have been measured at four energies very near threshold (0.1{lt}{ital T}{sub {pi}}{sup c.m.}{lt}2.7 MeV). The large asymmetries observed in the angular distributions of the differential cross section indicate strong constructive interference between the amplitudes for {ital s}-wave pion emission and the amplitudes for {ital p}-wave emission. A measure of the {ital s}-wave strength at zero energy is obtained and found to be consistent with the results from pionic atoms. The new data indicate that the excitation function for this reaction differs significantly from that of {ital p}+{ital n}{r arrow}{ital d}+{pi}{sup 0}.

• OSTI ID: 7286564
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 46:2; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

663430* -- Nucleon-Induced Reactions & Scattering-- (1992-)
663510 -- Nuclear Mass Ranges-- A=1-5-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANALYZING POWER
ANGULAR DISTRIBUTION
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BEAMS
BOSONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DEUTERIUM TARGET
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY
EVEN-ODD NUCLEI
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
HELIUM 3
HELIUM ISOTOPES
INTERACTIONS
INTERFERENCE
ISOTOPES
LIGHT NUCLEI
MESONS
MOMENTUM TRANSFER
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PIONS
PIONS NEUTRAL
POLARIZED BEAMS
PROTON REACTIONS
PSEUDOSCALAR MESONS
STABLE ISOTOPES
TARGETS
THRESHOLD ENERGY
TOTAL CROSS SECTIONS