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Transversity in hard exclusive electroproduction of pseudoscalar mesons

  • S. V. GoloskokovEmail author
  • P. KrollEmail author
Regular Article - Theoretical Physics

Abstract.

Estimates for electroproduction of pseudoscalar mesons at small values of skewness are presented. Cross-sections and asymmetries for these processes are calculated within the handbag approach which is based on factorization in hard parton subprocesses and soft generalized parton distributions (GPDs). The latter are constructed from double distributions. Transversity GPDs are taken into account; they are accompanied by twist-3 meson wave functions. For most pseudoscalar-meson channels a combination of ˜T and \( \bar{{E}}_{T}^{}\) plays a particularly prominent role. This combination of GPDs, which we constrain by moments obtained from lattice QCD, leads, with the exception of the \( \pi^{+}_{}\) and \( \eta^{\prime}_{}\) channels, to large transverse cross-sections.

Keywords

Form Factor Pseudoscalar Meson Electromagnetic Form Factor Pion Pole HERMES Collaboration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.Bogoliubov Laboratory of Theoretical PhysicsJoint Institute for Nuclear ResearchMoscow regionRussia
  2. 2.Fachbereich PhysikUniversität WuppertalWuppertalGermany
  3. 3.Institut für Theoretische PhysikUniversität RegensburgRegensburgGermany

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