APPLIED ASYMPTOTIC EXPANSIONS IN MOMENTA AND MASSES

By Y. BESIS

1 INTRODUCTION 2 FEYNMAN INTEGRALS: A BRIEF REVIEW 3 WHY, WHERE AND HOW TO EXPAND 4 OFF-SHELL LARGE-MOMENTUM EXPANSION 5 LARGE-MASS EXPANSION 6 THRESHOLD EXPANSION ONE HEAVY MASS IN THE THRESHOLD 7 THRESHOLD EXPANSION TWO MASSES IN THE THRESHOLD 8 SUDAKOV LIMITS 9 CONCLUSION