Observation of new short-lived particles in nuclear emulsion exposed to protons with a momentum of 400 GeV/c
Journal Article
·
· Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
OSTI ID:5980162
As a result of scanning the neighborhood up to 1000 ..mu..m of 1120 stars produced in nuclear emulsion by 400 GeV/c protons, 9 secondary events were singled out after a careful analysis, that were interpreted as cases of charmed particle decay. The mass values of the decaying particles agree with this interpretation. All decays occurred at distances not exceeding 100 ..mu..m from the vertex of the primary star. An estimate of the lifetime of the decaying particles gave a value of 1.5 x 10/sup -14/ sec. The cross section per nucleon for charmed particle production according to this experiment is 120 ..mu..b.
- Research Organization:
- P. N. Lebedev Physics Institute, USSR Academy of Sciences
- OSTI ID:
- 5980162
- Journal Information:
- Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 29:1; ISSN SJNCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON REACTIONS
CHARGED-PARTICLE REACTIONS
CHARM PARTICLES
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
GEV RANGE 100-1000
HADRON REACTIONS
INTERACTIONS
LIFETIME
NUCLEAR EMULSIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
POSTULATED PARTICLES
PROTON REACTIONS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON REACTIONS
CHARGED-PARTICLE REACTIONS
CHARM PARTICLES
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
GEV RANGE 100-1000
HADRON REACTIONS
INTERACTIONS
LIFETIME
NUCLEAR EMULSIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
POSTULATED PARTICLES
PROTON REACTIONS