Master integrals for bipartite cuts of three-loop photon self energy

Abstract

We calculate master integrals for bipartite cuts of the three-loop propagator QED diagrams. These master integrals determine the spectral density of the photon self energy. Our results are expressed in terms of the iterated integrals, which, apart from the $4m$ cut, reduce to Goncharov's polylogarithms. The master integrals for $4m$ cut have been calculated in our previous paper in terms of the one-fold integrals of harmonic polylogarithms and complete elliptic integrals. We provide the threshold and high-energy asymptotics of the master integrals found, including those for $4m$ cut.

17 pages

References in corpus (5)

• Reducing differential equations for multiloop master integrals
• Sector Decomposition
• Resolution of singularities for multi-loop integrals
• Blowing up Feynman integrals
• $\epsilon$-regular basis for non-polylogarithmic multiloop integrals and total cross section of the process $e^{+}{e}^{-}\to 2(Q\bar{Q})$

Cited by in corpus (4)

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