General analysis of the polarization effects in N+N -> d+P processes


Yalcin C., Rekalo M., Koru H.

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, cilt.24, ss.1003-1012, 1998 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 24 Konu: 5
  • Basım Tarihi: 1998
  • Doi Numarası: 10.1088/0954-3899/24/5/008
  • Dergi Adı: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
  • Sayfa Sayısı: ss.1003-1012

Özet

We establish the spin structure of matrix elements for N + N --> d + P processes, where P is a pi- or eta-meson, in terms of six scalar amplitudes. Isospin invariance of a strong interaction results in definite symmetry properties of these amplitudes relative to the change cos theta --> -cos theta; where theta is the P-meson production angle. We parametrize all possible polarization observables in n + p --> d + P using a formalism of structure functions and calculate these structure functions in terms of scalar amplitude. This allows us to establish symmetry properties of polarization observables relative to the transformation cos theta --> -cos theta. Special attention is devoted to theta = 90 degrees, where isospin invariance simplifies in particular spin structures of matrix elements.