ON THE $Sigma$-HYPERON DECAY (in Russian)
Experimental data on probabilities and coefficients of asymmetry for SIGMA hyperon decay along different channels satisfy the rule STA DELTA I! = 1/2/ . If the rule STA DELTA I! = 1/2 is confirmed by the experiments, then the universal theory of weak interactions between charged particles will not hold. The amplitudes of SIGMA + yields p + pi /sup 0/, SIGMA /sup +/ yields n + pi /sup +/, and SIGMA /su p -/ yields n + pi /sup -/ are expressed by A/sub +/ , A/sub 0/ and Asub -, where A = a + ib ( sigma K), K is single vector in the direction of nucleon motion. The lack of asymmetry in SIGMA /sup plus or minus / yields n + pi /sup plus or minus / decay means that for the above processes Re(ab*) = 0. Three variations satisfy these conditions: a = 0; b = 0; a and b differ in phase at 90 deg . Measurements of the direction of the nucleon polarization vector offers verification for STA DELTA I! = i1/2 and aid in the selection of a solution for two possible conditions (a/sub 0/ = b/sub -/ = 0 or a/ sub 0/ = b/sub 0/ = 0). In the event transverse neutron polarization is absent in SIGMA /sup -/ decay, the initial SIGMA /sup -/ is nonpolarized, and the absence of asymmetry in the decay does not result in the equation Re(ab*) = 0. The magnitude of Re(ab*) is determined by measuring the longitudinal neutron polarization. (R.V.J.)
- Research Organization:
- Joint Inst. for Nuclear Research, Dubna, USSR
- NSA Number:
- NSA-14-022344
- OSTI ID:
- 4157708
- Journal Information:
- Zhur. Eksptl'. i Teoret. Fiz., Journal Name: Zhur. Eksptl'. i Teoret. Fiz. Vol. Vol: 38
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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