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arxiv: hep-ph/9307323 · v1 · submitted 1993-07-22 · ✦ hep-ph

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Standard and hypergeometric representations for loop diagrams and the photon-photon scattering

A.I. Davydychev
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classification ✦ hep-ph
keywords diagramshypergeometricloopphoton-photonrepresentationsscatteringanalyticconnection
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By using the example of photon-photon scattering box diagrams, different representations for loop integrals are discussed. A connection between hypergeometric representation and dilogarithms is derived. An explicit analytic continuation formula to large values of Mandelstam variables is constructed.

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