On the electron self-energy to three loops in QED

Autor:	Duhr, Claude, Gasparotto, Federico, Nega, Christoph, Tancredi, Lorenzo, Weinzierl, Stefan
Rok vydání:	2024
Předmět:	High Energy Physics - Theory High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
Popis:	We compute the electron self-energy in Quantum Electrodynamics to three loops in terms of iterated integrals over kernels of elliptic type. We make use of the differential equations method, augmented by an $\epsilon$-factorized basis, which allows us to gain full control over the differential forms appearing in the iterated integrals to all orders in the dimensional regulator. We obtain compact analytic expressions, for which we provide generalized series expansion representations that allow us to evaluate the result numerically for all values of the electron momentum squared. As a by product, we also obtain $\epsilon$-resummed results for the self-energy in the on-shell limit $p^2 = m^2$, which we use to recompute the known three-loop renormalization constants in the on-shell scheme. Comment: 41 pages, 4 tables, 7 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2408.05154 Zobrazit plný text záznamu View this record from Arxiv