2018/02/28 by Matthias Heller, Oleksandr Tomalak, Marc Vanderhaeghen · 13 citations
Physics and Astronomy · #Atomic and Molecular Physics #Electron #Electron–positron annihilation #Hadron #Lepton #Muon #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Radiative transfer #Universality (dynamical systems) #Virtual particle #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevd.97.076012
published in Physical review. D/Physical review. D. 97(7) (American Physical Society) · 23 pages, 10 figures, fixed typo in Eqs 64 and 66, minor corrections in text and figures, Version published in Phys. Rev. D
openalex created_date 2018/03/06 · arxiv created 2018/04/19 · openalex publication_date 2018/04/30 · arxiv updated 2018/05/09 · openalex updated_date 2026/08/05
We report on the calculation of first-order quantum electrodynamics (QED) corrections for the \ensuremathγp\ensuremath→l+l^\ensuremath-p^\ensuremath' process. An upcoming experiment at MAMI (Mainz) aims to compare the cross sections of muon- and electron-pair production in this reaction to test lepton universality. Precise knowledge of the electromagnetic radiative corrections is needed for these measurements. As a first step, we present the leading QED radiative corrections in the soft-photon approximation when accounting for the finite lepton mass. For the kinematics at MAMI, we find corrections of the percent level for muons, and of order 10% for electrons.