Abstract
Properties of the recently proposed gauge-invariant gluon spin Sg are studied and compared to the usually defined “gluon polarization” Δg. By explicit 1-loop calculations in a quark state, it is found that Sg=59Δg. Furthermore, 45 of Sg can actually be identified as a “static-field” contribution and shown to cancel exactly an analogous static term in the gluon orbital angular momentum Lg, leaving Sg+Lg unaltered. These observations suggest that by an alternative definition, the gluon contribution to the nucleon spin may be drastically smaller than in the conventional wisdom.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
