Coherent. eta. -meson production in the reaction. pi. sup minus + sup 3 He r arrow. eta. + t

Journal Article · Mon Nov 20 04:00:00 EST 1989 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.63.2353· OSTI ID:5092029

Peng, J C; Leitch, M J; Bowman, J D; Irom, F; Kapustinsky, J; Li, T K; Liu, L C; Mishra, C S; Simmons, J E; Wong, Z F ^[1]; Smith, C ^[2]; Whitney, R R ^[3]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (USA)
2. University of Virginia, Charlottesville, Virginia 22901 (USA)
3. Continuous Electron Beam Accelerator Facility, Newport News, Virginia 23606 (USA)

The reaction {pi}{sup {minus}}+{sup 3}He{r arrow}{eta}+{ital t} has been observed by detecting {eta}{r arrow}2{gamma} decays. The observed forward-angle cross sections vary from {similar to}100 {mu}b/sr at 680 MeV/{ital c} to {similar to}2 {mu}b/sr at 590 MeV/{ital c}. Distorted-wave impulse-approximation calculations reproduce the shape but underestimate the magnitude of the observed cross section. These cross sections are approximately 100 times larger than those for the reaction {ital p}+{ital d}{r arrow}{eta}+{sup 3}He measured at similar {eta} center-of-mass energies.

• OSTI ID: 5092029
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 63:21; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

651220* -- Nuclear Properties & Reactions
A=1-5
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DETECTION
DISTORTED WAVE THEORY
ELEMENTARY PARTICLES
ENERGY RANGE
GAMMA DETECTION
HADRON REACTIONS
HADRONS
HELIUM 3 TARGET
MASS SPECTRA
MEASURING INSTRUMENTS
MESON REACTIONS
MESONS
MEV RANGE
MEV RANGE 100-1000
NEUTRON DETECTORS
NUCLEAR REACTIONS
PARTICLE PRODUCTION
PHASE SHIFT
PION MINUS REACTIONS
PION REACTIONS
RADIATION DETECTION
RADIATION DETECTORS
SPECTRA
TARGETS
THRESHOLD DETECTORS
TRITONS