EXPERIMENTAL VERIFICATION OF THE CHARGE INVARIANCE PRINCIPLE IN THE d + d $Yields$ He$sup 4$ + $pi$$sup 0$ REACTION FOR 400 Mev DEUTERONS

Journal Article · Fri Sep 01 00:00:00 EDT 1961 · Zhur. Eksptl'. i Teoret. Fiz.

OSTI ID:4836393

Akimov, Yu K; Savchenko, O V; Soroko, L M

Experiments with a 400 Mev deuteron beam are described in which the d + d yields He/sup 4/ + pi /sup 0/ reaction, forbidden by the law of conservation of total isotopic spin, is investigated. With a reliability of 90% the total cross section of the reaction is shown to be smaller than 1.1 x 10/sup -32/ cm/ sup 2/. The upper limit of the cross section is compared with the cross sections for d + d yields He/sup 4/ + gamma and p + He/sup 3/ yields He/sup 4/ + pi /sup He/sup 4/ + pi /sup 0/ (which is allowed by the isotopic spin selection rules). The data and the theoretical estimations point to the existence of a strong forbiddenness in the d + d yields He/sup 4/ + pi /sup 0/ reaction, and hence confirm the validity of the law of conservation of total isotopic spin in processes of pi -meson production by nucleons and light nuclei. (auth)

• Research Organization: Joint Inst. for Nuclear Research, Dubna, USSR
• NSA Number: NSA-16-000975
• OSTI ID: 4836393
• Journal Information: Zhur. Eksptl'. i Teoret. Fiz., Vol. Vol: 41; Other Information: Orig. Receipt Date: 31-DEC-62
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

PHYSICS
BINDING ENERGY
CROSS SECTIONS
DEUTERON BEAMS
ELECTRIC CHARGES
ENERGY
ENERGY LEVELS
ENERGY RANGE
GAMMA RADIATION
HELIUM 3
HELIUM 4
INTERACTIONS
ISOSPIN
MEASURED VALUES
NUCLEAR FORCES
NUCLEAR MODELS
NUCLEI
NUCLEONS
PARTICLE MODELS
PIONS
PRODUCTION
PROTONS
QUANTUM MECHANICS
SELECTION RULES
SPIN
TRANSIENTS