  The differential cross section and target asymmetry components of the
reaction D(e,pp)e'pi- on polarized deuteron were measured. The kinetic energies
of the protons were measured within 55-180 MeV and 46-265 MeV. The polar
acceptance angles in laboratory frame for the both protons are (64 - 82)
degrees and the azimuthal angles are (-16 +16), (164 - 196) degrees. The sharp
peak of the tensor a(20)-component of the target asymmetry is found near the
invariant mass of the pppi-system M(pppi) = 2300 MeV/c**2. The performed
calculations of the differential yield and the tensor target asymmetry do not
describe the obtained experimental results.
