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The regional strategy in the asymptotic expansion of two-loop vertex feynman diagrams

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Abstract

General prescriptions for evaluating coefficients at arbitrary powers and logarithms in the asymptotic expansion of Feynman diagrams in the Sudakov limit are discussed and illustrated with two-loop examples. Peculiarities connected with the evaluation of individual terms in the expansion, in particular, the introduction of an auxiliary analytic regularization, are characterized.

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Authors and Affiliations

  1. Skobeltsin Institute of Nuclear Physics, Moscow State University, Moscow, Russia

    V. A. Smirnov

  2. Skobeltsin Institute of Nuclear Physics, Moscow State University, Moscow, Russia

    E. R. Rakhmetov

Authors
  1. V. A. Smirnov
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  2. E. R. Rakhmetov
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Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 120, No. 1, pp. 64–71, July, 1999.

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Smirnov, V.A., Rakhmetov, E.R. The regional strategy in the asymptotic expansion of two-loop vertex feynman diagrams. Theor Math Phys 120, 870–875 (1999). https://doi.org/10.1007/BF02557396

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  • DOI: https://doi.org/10.1007/BF02557396

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