The pseudothreshold expansion of the 2-loop sunrise selfmass master amplitudes

1999/12/31 by M. Caffo, H. Czyż, H. Czyz +1 · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/s0550-3213(00)00274-1

published as Nucl.Phys. B581 (2000) 274-294 · 1+22 pages, Latex, no figures, changes in Eq.(41),(44),(47)

openalex publication_date 2000/08/01 · arxiv created 2002/03/22 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The values at pseudothreshold of two loop sunrise master amplitudes with arbitrary masses are obtained by solving a system of differential equations. The expansion at pseudothreshold of the amplitudes is constructed and some lowest terms are explicitly presented.

Citations

• Integration by parts: The algorithm to calculate β-functions in 4 loops
• Asymptotic expansion of Feynman integrals near threshold

Cited by

• Numerical evaluation of the general massive 2-loop sunrise self-mass master integrals from differential equations
• Numerical evaluation of the general massive 2-loop 4-denominator self-mass master integral from differential equations
• Four-Loop Tadpoles: Applications in QCD