T-odd polarization observables in the photoproduction of charmed particles near threshold


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Rekalo M., Tomasi-Gustafsson E.

PHYSICAL REVIEW D, vol.65, no.1, 2002 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 65 Issue: 1
  • Publication Date: 2002
  • Doi Number: 10.1103/physrevd.65.014010
  • Journal Name: PHYSICAL REVIEW D
  • Journal Indexes: Science Citation Index Expanded, Scopus

Abstract

The imaginary part of the matrix element for associative charm particle photoproduction, gamma+N-->Lambda(c)+(D) over bar, has a definite spin structure, near the reaction threshold, being characterized by a single parameter. This allows us to predict, in the framework of an effective Lagrangian approach, the energy and the angular dependence of T-odd polarization observables such as the analyzing power in the reaction gamma+(p) over bar-->Lambda(c) + (D) over bar and the polarization of the Lambda(c) hyperon, produced in the collision of unpolarized particles. We find sizable values for these observables, which can be measured experimentally.