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Título del libro: Transversity 2008 - Proceedings Of The 2nd Workshop On Transverse Polarization Phenomena In Hard Processes
Título del capítulo: Sivers function in constituent quark models

Autores UNAM:
AURORE MARIE PASCALE NICOLE COURTOY;
Autores externos:

Idioma:
Inglés
Año de publicación:
2009
Palabras clave:

DIS; Neutron structure; Transversity


Resumen:

A formalism to evaluate the Sivers function, developed for calculations in constituent quark models, is applied to the Isgur-Karl model. A non-vanishing Sivers asymmetry, with opposite signs for the u and d flavor, is found; the Burkardt sum rule is fulfilled up to 2%. Nuclear effects in the extraction of neutron single spin asymmetries in semi-inclusive deep inelastic scattering off 3He are also evaluated. In the kinematics of JLab, it is found that the nuclear effects described by an Impulse Approximation approach are under control.


Entidades citadas de la UNAM: