Calculation of the Two-Loop Heavy-Flavor Contribution to Bhabha Scattering

Details Calculation of the Two-Loop Heavy-Flavor Contribution to Bhabha Scattering Calculation of the Two-Loop Heavy-Flavor Contribution to Bhabha Scattering

2008-02-15

arxiv.org/abs/0802.2215v2

JHEP0802:080,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

43 pages, 8 figures; added references

Scientific paper

10.1088/1126-6708/2008/02/080

We describe in detail the calculation of the two-loop corrections to the QED Bhabha scattering cross section due to the vacuum polarization by heavy fermions. Our approach eliminates one mass scale from the most challenging part of the calculation and allows us to obtain the corrections in a closed analytical form. The result is valid for arbitrary values of the heavy fermion mass and the Mandelstam invariants, as long as s,t,u >> m_e^2.

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