Angle dependence of polarization observables by fragmentation of deuteronsto pions

The fragmentation of deuterons into pions with nonzero angle emitted in the kinematical region forbidden for free nucleon-nucleon collisions is analyz ed. The inclusive relativistic invariant spectrum of pions and the tensor a nalyzing power A(YY) are investigated within the framework of an impulse ap proximation using different kinds of the deuteron wave function. The influe nce of P-wave contribution to the deuteron wave function is studied, too. O ur results are compared with the experimental data and other calculations p erformed within both the non-relativistic and relativistic approaches. It w as found that theoretical calculations based on IA do not provide a consist ent understanding of the new data in a whole cumulative region that can be caused by a influence of non-nucleon degrees of freedom.