Associative charm photoproduction with circularly polarized photons

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2002-08-08

Author

Rekalo, MP
Tomasi-Gustafsson, E

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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.

Subject Keywords

Dependent parton distributions, Spin asymmeties

URI

https://hdl.handle.net/11511/65338

Journal

PHYSICS LETTERS B

DOI

https://doi.org/10.1016/s0370-2693(02)02190-1

Collections

Department of Physics, Article

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Citation Formats

M. Rekalo and E. Tomasi-Gustafsson, “Associative charm photoproduction with circularly polarized photons,” PHYSICS LETTERS B, pp. 101–107, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65338.