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VOLUME 51 (1990) | ISSUE 9 | PAGE 437
Limitation on right-handed currents in SU_L(2)\otimes SU_R(2)\otimes U(1)-symmetry model
The cross section for the helicity-changing scattering of neutrinos by electrons is calculated. It is larger by more than five orders of magnitude than the cross section for the elastic scattering in the electromagnetic channel due to the magnetic moment of neutrinos. A model discussed here yields a new astrophysical limitation on the mixing angle {ζ) for the mixing of left-handed and right-handed W bosons: sin 2£^0.01.