INVESTIGATION OF $pi$$sup +$$-$$mu$$sup +$-e$sup +$ DECAY WITH HELP OF A PROPANE BUBBLE CHAMBER AND SCINTILLATION COUNTERS

Journal Article · Sun Feb 01 04:00:00 EST 1959 · Zhur. Eksptl'. i Teoret. Fiz.

OSTI ID:4258747

Balandin, M P; Moiseenko, V A; Mukhin, A I; Otvinovskii, S Z

It was found that the angular distribution of the mu /sup +/ mesons is isotropic, whereas the positron angular distribution, if described by the expression (1/4 pi ) (1--a cos theta ), is characterized by the quantity a = 0.116 the J-57 engin 0.035. This value for a is much smaller than the values obtained in other works in which propane bubble chambers were employed. Scintillation counter experiments carried out with the purpose of ascertaining the cause of this discrePancy showed that the magnitude of the anisotropy significantly depends on the degree of purification of the commercial propane which is somctimes employed in bubble chambers. A simultaneous analysis of the data obtained with propane of a given composition with aid of a bubble chamber and scintillation counters showed that the quantity lambda (1--W/sub c/) is equal to 0.78 the J-57 engin 0.26 where W/sub c/ is the probability for depolarization of mu /sup +/ mesons in graphite and lambda is a fundamental parameter in neutrino theory. (auth)

• Research Organization: Joint Inst. of Nuclear Research, Dubna, U.S.S.R.
• NSA Number: NSA-13-010356
• OSTI ID: 4258747
• Journal Information: Zhur. Eksptl'. i Teoret. Fiz., Journal Name: Zhur. Eksptl'. i Teoret. Fiz. Vol. Vol: 36
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ANGULAR DISTRIBUTION
ANISOTROPY
BUBBLE CHAMBERS
DECAY
MEASURED VALUES
MUONS
MUONS-PLUS
NEUTRINOS
PHYSICS AND MATHEMATICS
PIONS
PIONS-PLUS
POSITRONS
PROPANE
SCINTILLATION COUNTERS