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arXiv · hep-ph/9512324

Photoproduction of neutral pion pairs in the Coulomb field of the nucleus

A. A. Bel'kov·M. Dillig·A. V. Lanyov
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Abstract

The total cross section for Coulomb photoproduction of neutral pion pairs in the reaction gamma A --> pi0 pi0 A is estimated within the effective chiral lagrangian approach. The amplitude of gamma gamma* --> pi0 pi0 with one off-shell photon is calculated at O(p^6) in the momentum expansion; in addition, nuclear absorption is taken into account. Besides its experimental feasibility, the results of the calculation demonstrate that the reaction gamma A --> pi0 pi0 A is a powerful source of information on the process gamma gamma --> pi0 pi0 close to threshold.

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A. A. Bel'kov, M. Dillig, A. V. Lanyov. 1997-03-20. Photoproduction of neutral pion pairs in the Coulomb field of the nucleus. https://doi.org/10.1088/0954-3899%2F23%2F7%2F007

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