B. Vereecke et al., SEARCH FOR PHYSICS BEYOND THE STANDARD MODEL VIA A POLARIZATION-ASYMMETRY CORRELATION EXPERIMENT ON IN-107, ACT PHY P B, 29(1-2), 1998, pp. 457-461
We report on a new precision measurement of the longitudinal polarizat
ion of positrons emitted by polarized In-107 nuclei. If interpreted in
the framework of the manifest left-right symmetric model, preliminary
results yield a lower limit of 303 GeV/c(2) for the mass of a possibl
e, predominantly right-handed W gauge boson.