Gauge-Invariant Decomposition of Nucleon Spin and Its Spin-Off

Details Gauge-Invariant Decomposition of Nucleon Spin and Its Spin-Off Gauge-Invariant Decomposition of Nucleon Spin and Its Spin-Off

1996-03-08

arxiv.org/abs/hep-ph/9603249v1

Phys.Rev.Lett. 78 (1997) 610-613

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1103/PhysRevLett.78.610

I introduce a gauge invariant decomposition of the nucleon spin into quark helicity, quark orbital, and gluon contributions. The total quark (and hence the quark orbital) contribution is shown to be measurable through virtual Compton scattering in a special kinematic region where single quark scattering dominates. This deeply-virtual Compton scattering (DVCS) has much potential to unravel the quark and gluon structure of the nucleon.

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