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Title: Angular Momentum Decomposition for an Electron

Journal Article · · Physical Review D
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We calculate the orbital angular momentum of the `quark' in the scalar diquark model as well as that of the electron in QED (to order $$\alpha$$). We compare the orbital angular momentum obtained from the Jaffe-Manohar decomposition to that obtained from the Ji relation and estimate the importance of the vector potential in the definition of orbital angular momentum.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-060R23177
OSTI ID:
956252
Report Number(s):
JLAB-THY-08-920; arXiv:0812.1605; DOE/OR/23177-0561
Journal Information:
Physical Review D, Journal Name: Physical Review D
Country of Publication:
United States
Language:
English

References (11)

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Gauge-Invariant Decomposition of Nucleon Spin journal January 1997
QCD constraints on the shape of polarized quark and gluon distributions journal May 1995
Orbital angular momentum in deep inelastic scattering journal May 1999
Light-cone representation of the spin and orbital angular momentum of relativistic composite systems journal January 2001
Anomalous magnetic moment and limits on fermion substructure journal November 1980
A possible resolution of the proton spin problem journal May 2008
Orbital angular momentum and the parton model journal June 1987
Interplay of Spin and Orbital Angular Momentum in the Proton journal September 2008
The g1 problem: Deep inelastic electron scattering and the spin of the proton journal June 1990
Quark orbital-angular-momentum distribution in the nucleon journal November 1998

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