Higher Fock State Contributions to the Generalized Parton Distribution
Journal Article
·
OSTI ID:881110
We discuss the higher Fock state (q{bar q} g) contributions to the nonzero value of the pion GPD at the crossover point x = zeta between the DGLAP and ERBL regions. Using the phenomenological light-front constituent quark model, we confirm that the higher Fock state contributions indeed give a nonzero value of the GPD at the crossover point. Iterating the light-front quark model wave function of the lowest q{bar q} Fock state with the Bethe-Salpeter kernel corresponding to the one-gluon-exchange, we include all possible time-ordered q{bar q} g Fock state contributions and obtain the pion GPD satisfying necessary sum rules and continuity conditions.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE - Office of Energy Research (ER)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 881110
- Report Number(s):
- JLAB-THY-06-476; DOE/ER/40150-3844; hep-ph/0603198; TRN: US0602899
- Country of Publication:
- United States
- Language:
- English
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