Abstract
We perform a calculation of Sivers function in a light-cone SU(6) quark–diquark model with both scalar diquark and vector diquark spectators. We derive the transverse momentum dependent light-cone wave function of the proton by taking into account the Melosh–Wigner rotation. By adopting one-gluon exchange, we obtain a non-vanishing Sivers function of down quark from interference of proton spin amplitudes. We analyze the |P h⊥| M weighted Sivers asymmetries in π +, π − and π 0 electroproduction off transverse polarized proton target, averaged and not averaged by the kinematics of HERMES experiment.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.