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Two-Loop N_F=1 QED Bhabha Scattering Differential Cross Section

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arxiv hep-ph/0405275 v2 pith:OSGJ6BKF submitted 2004-05-27 hep-ph

R. Bonciani , A. Ferroglia , P. Mastrolia , E. Remiddi , J. J. van der Bij This is my paper · ORCID
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keywords bhabhacrossdifferentialdimensionalscatteringsectiontwo-loopalpha
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We calculate the two-loop virtual, UV renormalized corrections at order \alpha^4 (N_F=1) in QED to the Bhabha scattering differential cross section, for arbitrary values of the squared c.m. energy s and momentum transfer t, and on-shell electrons and positrons of finite mass m. The calculation is carried out within the dimensional regularization scheme; the remaining IR divergences appear as polar singularities in (D-4). The result is presented in terms of 1- and 2-dimensional harmonic polylogarithms, of maximum weight 3.

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  1. On the extraction of $\alpha_\textit{em}(m_Z^2)$ at Tera-$Z$

    hep-ph 2025-01 conditional novelty 7.0 of 10

    Forward-region Bhabha ratios at Tera-Z could extract alpha_em(m_Z^2) with a projected statistical sensitivity of about 6e-6, below the current bottleneck.

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