Hepp and Speer Sectors within Modern Strategies of Sector Decomposition

Understand

Hepp and Speer sectors were successfully used in the sixties and seventies for proving mathematical theorems on analytically or/and dimensionally regularized and renormalized Feynman integrals at Euclidean external momenta.

• We describe them within recently developed strategies of introducing iterative sector decompositions.
• We show that Speer sectors are reproduced within one of the existing strategies.