Diphoton Generalized Distribution Amplitudes

Details Diphoton Generalized Distribution Amplitudes Diphoton Generalized Distribution Amplitudes

2008-06-06

arxiv.org/abs/0806.1098v1

Phys.Rev.D78:034009,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 5 figures

Scientific paper

10.1103/PhysRevD.78.034009

We calculate the leading order diphoton generalized distribution amplitude by calculating the amplitude of the process gamma* gamma -> gamma gamma in the low energy and high photon virtuality region at the Born order and in the leading logarithmic approximation. As in the case of the anomalous photon structure functions, the gamma gamma generalized distribution amplitude exhibits a characteristic \ln Q^2 behaviour and obeys inhomogeneous evolution equations.

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