STUDY OF LAMBDA(0) POLARIZATION IN PP-]P-LAMBDA-K-0(-)PI(+)PI(-) AT 27.5 GEV()PI(+)PI()

We measured the polarization of 51 195 Lambda(0,)s produced in the spe cific reaction pp --> p Lambda(0)K(+)pi(+)pi(-)pi(+)pi(-) with 27.5 Ge V/c protons incident on a liquid hydrogen target. Because the reaction was measured completely, the polarization was studied versus the foll owing: X(F) (-1 to + 1), Lambda(0) transverse momentum (0 to 1.32 GeV/ c), correlations with the momentum vectors of the other particles in t he reaction, and the invariant mass of combinations of particles in th e final state. The dependence of the polarization on these variables d oes not always agree with theoretical expectations.