Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-10-08
Phys.Lett.B660:350-359,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 8 eps figures
Scientific paper
10.1016/j.physletb.2008.01.014
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. We also propose an improved ansatz for double distributions that embeds this property.
Hwang Dae Sung
Mueller Doreen
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