Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-12-21
Czech.J.Phys.51:A307-A313,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
Paper contains 7 pages, 2 eps figures, 1 picture - czjphys.sty required; to be published in Proc. of the International Worksho
Scientific paper
10.1007/s10582-001-0038-0
The fragmentation of deuterons into pions with nonzero angle emitted in the kinematical region forbidden for free nucleon-nucleon collisions is analyzed. The inclusive relativistic invariant spectrum of pions and the tensor analyzing power ${\rm A}_{YY}$ are investigated within the framework of an impulse approximation using different kinds of the deuteron wave function. The influence of ${\rm P}$-wave contribution to the deuteron wave function is studied, too. Our results are compared with the experimental data and other calculations performed within both the non-relativistic and relativistic approaches. It was found that theoretical calculations based on IA do not provide a consistent understanding of the new data in a whole cumulative region that can be caused by a influence of non-nucleon degrees of freedom.
Illarionov Alexei Yu.
Litvinenko Anatoli G.
Lykasov Gennadi I.
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