Test of the isospin invariance using polarization effects in slow antiproton annihilation, (p)over-bar+p(n)->P+V

Yalcin C., Rekalo M., Koru H.

MODERN PHYSICS LETTERS A, vol.12, no.7, pp.479-487, 1997 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 12 Issue: 7
  • Publication Date: 1997
  • Doi Number: 10.1142/s0217732397000492
  • Journal Name: MODERN PHYSICS LETTERS A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.479-487
  • Middle East Technical University Affiliated: No

Abstract

The spin structure of the amplitudes for antiproton annihilation at rest, (p) over bar + N --> P + V, P = pi, eta; V = rho, omega, phi, is established. The relation between symmetry properties of strong interaction (isospin invariance and the invariance relative to charge conjugation) and the polarization effects in such reactions are derived. It is demonstrated that the simplest polarization effects in (p) over bar + N --> P + V, namely, the elements of V-meson density matrix, are sensitive to possible violation of the isospin invariance and C-invariance. The analysis of the spin structure of P-wave annihilation amplitudes is also presented.