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Diffractive electroproduction of two mesons separated by a large rapidity gap

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arxiv hep-ph/0307086 v1 pith:SQWMXVWB submitted 2003-07-07 hep-ph

classification hep-ph
keywords amplitudecollineardescribinggammalargemesonsprocessrapidity
verification ladder T0 review T1 audit T2 compute T3 formal
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We consider the process gamma^* N -> M_1 M_2 N' with a large rapidity gap between the two mesons M_1 and M_2. Within the QCD collinear approximation, the scattering amplitude may be written as a convolution of an impact factor describing the gamma^* -> M_1 transition and an amplitude describing the N -> M_2 N' collinear process.

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