Two-Loop Heavy-Flavor Contribution to Bhabha Scattering
R. Bonciani, A. Ferroglia, A. A. Penin
TL;DR
This paper calculates two-loop quantum electrodynamics corrections to Bhabha scattering involving heavy fermions, providing results applicable across a wide range of energies and scattering angles.
Contribution
It introduces a comprehensive calculation of two-loop heavy-flavor vacuum polarization effects in Bhabha scattering for arbitrary fermion masses and kinematic conditions.
Findings
Derived analytical expressions valid for all s, t, u >> m_e^2
Enhanced precision in theoretical predictions of Bhabha scattering
Applicable to high-energy collider experiments
Abstract
We evaluate the two-loop QED corrections to the Bhabha scattering cross section which involve the vacuum polarization by heavy fermions of arbitrary mass m_f >> m_e. The results are valid for generic values of the Mandelstam invariants s,t,u >> m_e^2.
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