Higher Fock State Contributions to the Generalized Parton Distribution

Journal Article · Fri Apr 14 04:00:00 EDT 2006

OSTI ID:881110

Ji, Chueng-Ryong; Mishchenko, Yuriy; Radyushkin, Anatoly

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
• 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
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DISTRIBUTION
KERNELS
PIONS
QUARK MODEL
SUM RULES
WAVE FUNCTIONS