28 citations · 96 across the 14 of their papers we have counts for
14 papers
Role of gluons and the quark sea in the proton spin
Petr Zavada
The real, interacting elementary particle always consits of a 'bare' particle and a cloud of virtual particles mediating a self-interaction and/or the bond inside a composite objec…
On the role of quark orbital angular momentum in the proton spin
Petr Zavada
We study the covariant version of the quark-parton model, in which the general rules of the angular momentum composition are accurately taken into account. We demonstrate how these…
Spin-orbital composition in relativistic many-fermion systems
Petr Zavada
The interplay of spins and orbital angular moments of the fermions play an important role for the structure of the many-fermion systems like atoms, nuclei, nucleons (baryons) or me…
Proton spin in leading order of the covariant approach
Petr Zavada
We study the covariant version of the quark-parton model, in which the general rules of the angular momentum composition are accurately taken into account. We demonstrate how these…
Quark orbital angular momentum: can we learn about it from GPDs and TMDs?
H. Avakian, A. V. Efremov, P. Schweitzer +2
It is known how to access information on quark orbital angular momentum from generalized parton distribution functions, in a certain specified framework. It is intuitively expected…
Parton distribution functions and quark orbital motion
Petr Zavada
Covariant version of the quark-parton model is studied. Dependence of the structure functions and parton distributions on the 3D quark intrinsic motion is discussed. The important…