Universal higher order singlet QED corrections to unpolarized lepton scattering

J. Blümlein; H. Kawamura

doi:10.1140/epjc/s10052-007-0300-0

EPJ

Universal higher order singlet QED corrections to unpolarized lepton scattering

J. Blümlein¹^* and H. Kawamura¹^,2

¹ Deutsches Elektronen-Synchrotron, DESY, Platanenallee 6, 15738, Zeuthen, Germany
² Radiation Laboratory, RIKEN, Wako, 351-0198, Japan

Received: 6 March 2007
Published online: 10 May 2007

Abstract

We calculate the universal flavor singlet radiative QED corrections to unpolarized lepton scattering applicable to general differential scattering cross sections, involving charged fermions or photons in the initial or final states. The radiators are derived to O((αln(Q²/m_f ²))⁵) in analytic form. Numerical illustrations are given.

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