Résumé du preprint DAPNIA-04-337

DAPNIA-04-337
Associative open charm photoproduction $\gamma+ N\to Y_c +\overline{D}_c (\overline{D}^*_c) $, $Y_c=\Lambda_c^+$ or $\Sigma_c$
E. Tomasi-Gustafsson
We analyze polarization effects in associative photoproduction of pseudoscalar ($\\overline{D}_c$) and vector ($\\overline{D}^*_c$) charmed mesons in exclusive processes $\\gamma+ N\\to Y_c +\\overline{D}_c$, $Y_c=\\Lambda_c^+$, $\\Sigma_c$.
We calculate the differential cross section and all polarization observables in framework of an effective Lagrangian approach. In case of collinear kinematics it is possible to give model independent predictions for polarization observables in case of $\\overline{D}_c$  production, and the analysis for $\\overline{D}^*_c$ is largely simplified.

 

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