The gluon spin asymmetry as a link to Delta G and orbital angular momentum.
Conference
·
OSTI ID:947974
The fundamental program in high energy spin physics focuses on the spin structure of the nucleon. The gluon and orbital angular momentum components of the nucleon spin are virtually unknown. The J{sub z} = 1/2 sum rule involves the integrated parton densities and can be used to extract information on the orbital angular momentum and its evolution. To avoid any bias on a model of {Delta}G, we assume that the gluon asymmetry, A = {Delta}G/G can be used to extract {Delta}G over a reasonable kinematic region. Combining the results for {Delta}G with the evolution equations, we can determine a theoretical expression for the orbital angular momentum and its evolution.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 947974
- Report Number(s):
- ANL-HEP-CP-04-140
- Country of Publication:
- United States
- Language:
- ENGLISH
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