Corpus ID: 117799838

Applications of the Large Mass Expansion

  title={Applications of the Large Mass Expansion},
  author={J. Fleischer and A. Kotikov and O. Veretin},
  journal={arXiv: High Energy Physics - Phenomenology},
The method of the large mass expansion (LME) is investigated for selfenergy and vertex functions in two-loop order. It has the technical advantage that in many cases the expansion coefficients can be expressed analytically. As long as only one non-zero external momentum squared, q(2), is involved also the Taylor expansion (TE) w.r.t. small q(2) yields high precision results in a domain sufficient for most applications. In the case of only one non-zero mass M and only one external momentum… Expand
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