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arXiv · 1110.5242

Generalized Parton Distributions of the Photon for Nonzero zeta

Asmita Mukherjee·Sreeraj Nair
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Abstract

We present a calculation of the generalized parton distributions of the photon when there is non-zero momentum transfer both in the transverse and longitudinal directions. We consider only the contributions when the photon helicity is not flipped and calculate those at leading order in electromagnetic coupling $α$ and zeroth order in the strong coupling $α_s$. We keep the leading logarithmic terms as well as the quark mass terms in the vertex. By taking Fourier transforms of the GPDs with respect to the transverse and longitudinal momentum transfer, we obtain the parton distributions of the photon in position space.

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Asmita Mukherjee, Sreeraj Nair. 2011-10-24. Generalized Parton Distributions of the Photon for Nonzero zeta. https://doi.org/10.1016/j.physletb.2011.12.011

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