Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-05-27
Nucl.Phys. B701 (2004) 121-179
Physics
High Energy Physics
High Energy Physics - Phenomenology
61 pages, 4 figures. Overall sign mistakes in some formulas in appendix corrected, references added
Scientific paper
10.1016/j.nuclphysb.2004.09.015
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.
Bonciani R.
der Bij J. van J.
Ferroglia Andrea
Mastrolia Pierpaolo
Remiddi Ettore
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