Journal
PHYSICAL REVIEW C
Volume 86, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.86.015205
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Funding
- US Department of Energy [DE-FG0287ER40365]
- National Science Foundation [PHY-0555232, PIF-0653405]
- Direct For Mathematical & Physical Scien
- Division Of Physics [0854805] Funding Source: National Science Foundation
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We consider the transition (gamma*pi(0)(eta,eta') -> gamma) and electromagnetic (gamma*pi(+/-) -> pi(+/-)) form factors in a wide range of energy-momentum transfer s. We employ dispersion relations to connect the timelike and spacelike regions. We discuss the role of resonances and QCD partonic contributions. We find that the former give sizable contributions in the currently available range of s and for the latter we consider the role of Reggeized fermion exchange.
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