Problem of Neutrino Handedness in Weak Interactions

In this paper we show that the neutrino observables, including an information about the transverse neutrino spin polarization, can be sensitive to the effects coming from the interference terms between the standard vector V, axial A couplings of L-handed neutrinos and exotic scalar S coupling of R-handed ones in the differential cross section. Our analysis is based on the electron neutrino-electron elastic scattering. This reaction is considered at the level of the four-fermion point interaction. Neutrinos are assumed to be massive and to be polarized Dirac fermions coming from the Sun.