REACTION pn $Yields$ pn$pi$$sup 0$ IN THE ENERGY RANGE FROM THE THRESHOLD TO 665 MEV

Technical Report · Thu Jan 01 04:00:00 EST 1959

OSTI ID:4215204

Dunaitzev, A F; Prokoshkin, Yu D

By a combined investigation of neutral pion production in p-d and p-p collisions data were obtained on the magnitudes of the total cross sections and angular distribuiions for the reaction pn yields pn pi /sup 0/ in the energy range from the threshold to 665 Mev. The comparison of these cross sections with those from other reactions shows that the requirement which the hypothesis of the isotopic invariance imposes on the relation between the total cross sections for various reactions of pion production is fulfilled in the investigated energy region within the experimental error (up to 10%). The pion production in the state with the isotopic spin T = 1 is approximately twice as intensive as in the state with T = 0. The angular distribution of neutral pions produced in nucleon- nucleon collisions at an energy of about 650 Mev was found to be close to isotropic in contrast to that of the charged pions which is essentially anisotropic by the data of Neganov and Savchenko. This difference contradicts the hypothesis of the isotopic invariance. The latter conclusion has, however, some objections and is of a preliminary character. (auth)

• Research Organization: Joint Inst. for Nuclear Research, Dubna, U.S.S.R. Lab. of Nuclear Problems
• NSA Number: NSA-14-004729
• OSTI ID: 4215204
• Report Number(s): NP-8143; P-405
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
CROSS SECTIONS
ERRORS
INTERACTIONS
ISOSPIN
MEV RANGE
NEUTRONS
PARTICLE MODELS
PHYSICS
PIONS
PIONS-NEUTRAL
PRODUCTION
PROTONS