Diphoton Generalized Distribution Amplitudes - Archive ouverte HAL
Article Dans Une Revue Physical Review D Année : 2008

Diphoton Generalized Distribution Amplitudes

Résumé

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.

Dates et versions

hal-00286241 , version 1 (09-06-2008)

Identifiants

Citer

M. El Beiyad, B. Pire, L. Szymanowski, S. Wallon. Diphoton Generalized Distribution Amplitudes. Physical Review D, 2008, D78, pp.034009. ⟨hal-00286241⟩
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