2007

Implication of the overlap representation for modelling generalized parton distributions

Hwang, D. S., Mueller, D.

Understand

Based on a field theoretically inspired model of light-cone wave functions, we derive valence-like generalized parton distributions and their double distributions from the wave function overlap in the parton number conserved s-channel.

The parton number changing contributions in the t-channel are restored from duality.
In our construction constraints of positivity and polynomiality are simultaneously satisfied and it also implies a model dependent relation between generalized parton distributions and transverse momentum dependent parton distribution functions.
The model predicts that the t-behavior of resulting hadronic amplitudes depends on the Bjorken variable x_Bj.

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