Paper
Are all Boer-Mulders functions alike?
Authors
Abstract
Chirally odd generalized parton distributions (GPDs) and the Boer-Mulders function provide valuable information about spin-orbit correlations for quarks in nucleons and other hadrons. We compare results for the relevant GPD from a variety of phenomenological models as well as recent lattice results. We find that for nucleons as well as the pion and for both and quark. As a result, the corresponding Boer Mulders functions are all expected to be negative. The sign of arises from the relative sign between the upper and lower Dirac components for the quark wave functions.