Experimental determination of the effective strong coupling constant
Journal Article
·
OSTI ID:850148
We extract an effective strong coupling constant from low Q2 data on the Bjorken sum. Using sum rules, we establish its Q2-behavior over the complete Q2-range. The result is compared to effective coupling constants extracted from different processes and to calculations based on Schwinger-Dyson equations, hadron spectroscopy or lattice QCD. Although the connection between the experimentally extracted effective coupling constant and the calculations is not clear, the results agree surprisingly well.
- Research Organization:
- TJNAF (Thomas Jefferson National Accelerator Facility, Newport News, VA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 850148
- Report Number(s):
- JLAB-PHY-05-405; DOE/ER/40150-3570; TRN: US0504285
- Country of Publication:
- United States
- Language:
- English
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