Associative charm photoproduction with circularly polarized photons
PHYSICS LETTERS B, vol.541, pp.101-107, 2002 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 541
- Publication Date: 2002
- Doi Number: 10.1016/s0370-2693(02)02190-1
- Journal Name: PHYSICS LETTERS B
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.101-107
- Open Archive Collection: AVESIS Open Access Collection
- Middle East Technical University Affiliated: No
Abstract
We calculate the asymmetries for the processes gamma + p --> Lambda(c)(+) (Sigma(c)(+)) + (D-0) over bar and gamma + p --> Lambda(c)(+)(Sigma(c)(+)) + (D*) over bar, induced by circularly polarized photons on a polarized proton target in the framework of an effective Lagrangian model. We found large and positive values for the asymmetry induced by the z-component of the proton polarization, in a wide energy region, from threshold up to E-gamma = 70 GeV In the case of pseudoscalar meson photoproduction, the predictions are qualitatively model-independent. For D*-photoproduction, there is a strong dependence of the asymmetries on NLambda(c)D(D*)-coupling constants. (C) 2002 Elsevier Science B.V. All rights reserved.