Semiquantitative phenomenology of composite-particle decay and the e sup + e minus puzzle

Journal Article · Mon Mar 18 04:00:00 EST 1991 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.66.1426· OSTI ID:5837290

Griffin, J J ^[1]

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1. Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742-4111 (US)

A quantitative composite-particle phenomenology of the {ital e}{sup +}{ital e{minus}} puzzle'' is summarized. The U+Th coincident ({ital e}{sup +}{ital e{minus}}) lines (at 809, 760, and 608 keV) arise from the decay of free composite particles and the U+Ta ({ital e}{sup +}{ital e{minus}}) lines (at 805, 748, and 620( ) keV) from decays of a particle bound to an emergent heavy ion, presumably uranium. A good semiquantitative description is obtained for the difference energies and widths observed for these six lines without any reference to the internal structure of the composite particle. This result suggests that presently available data may be insufficient to determine that structure.

• DOE Contract Number: FG05-87ER40322
• OSTI ID: 5837290
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 66:11; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
645202 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
74 ATOMIC AND MOLECULAR PHYSICS
ACTINIDES
ANNIHILATION
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
BASIC INTERACTIONS
BOUND STATE
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
COLLISIONS
COMPOSITE MODELS
COULOMB FIELD
DATA
ELECTRIC FIELDS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
HEAVY ION REACTIONS
INFORMATION
INTERACTIONS
KEV RANGE
LEPTON-LEPTON INTERACTIONS
LEPTONS
LINE WIDTHS
MATHEMATICAL MODELS
METALS
NUCLEAR REACTIONS
NUMERICAL DATA
PAIR PRODUCTION
PARTICLE INTERACTIONS
PARTICLE MODELS
TANTALUM
THEORETICAL DATA
THORIUM
TRANSITION ELEMENTS
URANIUM