Transversity Generalized Parton Distributions from gamma N -> pi rho_T N' with a Large pi rho_T Invariant Mass - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2009

Transversity Generalized Parton Distributions from gamma N -> pi rho_T N' with a Large pi rho_T Invariant Mass

Résumé

The chiral-odd transversity generalized parton distributions of the nucleon can be accessed experimentally through the exclusive photoproduction process gamma N -> pi rhoT N', with or without beam and target polarization, provided the vector meson is produced in a transversely polarized state. The kinematical domain of factorization is defined through a large invariant mass of the meson pair and a small transverse momentum of the final nucleon. We calculate perturbatively the scattering amplitude at leading order in alpha_s and build a simple model for the dominant transversity GPD H_T(x, xi, t) based on the concept of double distribution. Counting rate estimates are in progress.

Dates et versions

hal-00432440 , version 1 (16-11-2009)

Identifiants

Citer

M. El Beiyad, B. Pire, M. Segond, L. Szymanowski, S. Wallon. Transversity Generalized Parton Distributions from gamma N -> pi rho_T N' with a Large pi rho_T Invariant Mass. 2009. ⟨hal-00432440⟩
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