Possibility of measuring the lifetime of the. sigma. /sup 0/ hyperon by the method of Coulomb excitation
Journal Article
·
· Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
OSTI ID:6772816
A study is made of the possibility of measuring the lifetime of the ..sigma../sup 0/ hyperon produced in the process ..lambda..A..--> sigma../sup 0/A by separating the Coulomb peak from the strong-interaction background in the differential cross section for small momentum transfers to the nucleus. The strong-interaction contribution to the process ..lambda..N..--> sigma../sup 0/N is estimated by the method of complex angular momenta with allowance for cuts. The cross section for the nuclear process ..lambda..A..--> sigma../sup 0/A is evaluated using the Glauber formalism. It is shown that in the case of heavy nuclei the electromagnetic interactions dominate over the entire region of coherence for laboratory energies of the incident ..lambda.. hyperon in the range E> or approx. =10 GeV. The ranges of energies and emission angles of the ..lambda.. hyperons and photons from the decay of coherently produced ..sigma../sup 0/ hyperons are determined.
- Research Organization:
- Moscow Engineering-Physics Institute
- OSTI ID:
- 6772816
- Journal Information:
- Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 27:2; ISSN SJNCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645207* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. Greater than 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
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COULOMB EXCITATION
DECAY
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EXCITATION
FERMIONS
GLAUBER THEORY
HADRON REACTIONS
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HYPERON BEAMS
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HYPERONS
LAMBDA PARTICLE BEAMS
LIFETIME
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SIGMA PARTICLES
STRANGE PARTICLES
Baryon No. Greater than 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BARYON REACTIONS
BARYONS
BEAMS
COULOMB EXCITATION
DECAY
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EXCITATION
FERMIONS
GLAUBER THEORY
HADRON REACTIONS
HADRONS
HYPERON BEAMS
HYPERON REACTIONS
HYPERONS
LAMBDA PARTICLE BEAMS
LIFETIME
NUCLEAR REACTIONS
PARTICLE BEAMS
SIGMA NEUTRAL
SIGMA PARTICLES
STRANGE PARTICLES