1994/02/24 by M. Cavicchi, Marco Cavicchi, Antonio Vairo +1
Engineering · Physics and Astronomy · #Atomic and Molecular Physics #Muon and positron interactions and applications #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1007/bf01580325
published as Z.Phys. C63 (1994) 455-462 · 21 pages, Latex, Preprint DFUB-94-03
arxiv created 1994/02/24 · openalex publication_date 1994/09/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We solve the Bethe-Salpeter equation for hydrogenic bound states by choosing an appropriate interaction kernel Kc. We want to use our solution to calculate up to a higher order the hydrogen Lamb-shift, and as a first application we present up to order (å/ π)(\za)7 the contribution of the lowest order self-energy graph, calculated \it exactly. The basic formalism is a natural extension to the hydrogenic bound states of the one previously presented by R. Barbieri and E. Remiddi and used in the case of positronium.