Published for the American Physical Society by the American Institute of Physics
Physical Review C, Nuclear Physics vol:90 issue:3
035502 (15 pages)
The experimental value, ˜A = 0.587(14), is in agreement with the standard model value of 0.5991(2) and is interpreted in terms of physics beyond the standard model. The limits obtained on possible tensor-type charged currents in the weak interaction Hamiltonian are −0.045 < (C_T + C'_T)/CA < 0.159 (90% C.L.).
The obtained limits are comparable to limits from other correlation measurements in nuclear β decay and contribute to further constraining tensor coupling constants.