T-noninvariant effect in muon capture by 6-Li nucleus with decay to a continuum

Abstract

The T-noninvariant transverse polarization of neutrons is considered for muon capture by a 6-Li nucleus with decay into a quasistationary 2+ state of the three particle alpha+n+n continuum. This polarization is orthogonal to the plane spanned by the polarization axis of the initial mesic atom and the neutron momentum. The situation in which neutrons that are emitted in the plane orthogonal to the axis of the mesic-atom polarization and which have oppositely directed momenta equal in magnitude are selected is analyzed. The wave function of the final state is constructed by using the method of hyperspherical harmonics. In the approximation of the allowed Gamow-Teller transition 1+ to 2+, this neutron polarization is expressed in terms of the T-noninvariant relative phase of reduced matrix elements for transitions from the 6-Li ground state to various final-state configurations.