Induced decay of composite [ital J][sup [ital P][ital C]]=1[sup ++] particles in atomic Coulomb fields

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.50.867· OSTI ID:7112224

Stein, E; Reinhardt, J; Schaefer, A; Greiner, W ^[1]

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1. Institut fuer Theoretische Physik, Johann Wolfgang Goethe-Universitaet, Postfach 111932, D-60054 Frankfurt am Main (Germany)

The electron-positron pairs observed in heavy-ion collisions at Gesellschaft fuer Schwerionen-forschung Darmstadt mbH have been interpreted as the decay products of yet unknown particles with masses around 1.8 MeV. The negative results of resonant Bhabha scattering experiments, however, do not support such an interpretation. Therefore we focus on a more complex decay scenario, where the [ital e][sup +][ital e][sup [minus]] lines result from a two-collision process. We discuss the induced decay of a metastable 1[sup ++] state into [ital e][sup +][ital e][sup [minus]] pairs. For most realizations of a 1[sup ++] state such a decay in leading order can only take place in the Coulomb field of a target atom. This fact has the attractive consequence that for such a state the Bhabha bounds are no longer valid. However, the absolute value of the [ital e][sup +][ital e][sup [minus]] production cross section turns out to be unacceptably small.

• OSTI ID: 7112224
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 50:1; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

663450 -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
665300* -- Interactions Between Beams & Condensed Matter-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMS
BHABHA SCATTERING
CHARGE STATES
CHARGED-PARTICLE REACTIONS
COULOMB FIELD
CROSS SECTIONS
DAUGHTER PRODUCTS
DECAY
ELASTIC SCATTERING
ELECTRIC FIELDS
ELECTRON-POSITRON INTERACTIONS
ENERGY LEVELS
ENERGY RANGE
EXCITED STATES
HEAVY ION REACTIONS
INTERACTIONS
ISOTOPES
LEPTON-LEPTON INTERACTIONS
MASS SPECTRA
METASTABLE STATES
MEV RANGE
MEV RANGE 01-10
NUCLEAR REACTIONS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
SCATTERING
SPECTRA