NEW POSSIBILITIES OF STUDYING INDUCED PSEUDOSCALAR INTERACTION AND T-INVARIANCE IN MUON-CAPTURE BY POLARIZED AND ALIGNED NUCLEI

The angular distribution of neutrinos (recoil nuclei) in muon capture by a nucleus with arbitrary spin J(i) for an allowed Gamow-Teller tran sition is considered by taking into account hyperfine effects. This an gular distribution is shown to include a correlation that is highly se nsitive to the form factor g(P) of the induced pseudoscalar interactio n and arises only if the initial mesic atom is aligned. It is shown th at, for the same transition, allowance must be made for the sensitivit y of the nuclear model to the properly considered hyperfine dependence of the muon-capture rate to extract the g(P) value. An estimate is gi ven for the T-noninvariant transverse polarization of neutrons for muo n capture by a Li-6 nucleus with a decay into a quasistationary 2(+) s tate of the three-particle alpha + n + n continuum.