Calculation of the two-loop heavy-flavor contribution to Bhabha scattering

6533b7d3fe1ef96bd1261651

RESEARCH PRODUCT

Calculation of the two-loop heavy-flavor contribution to Bhabha scattering

Andrea Ferroglia Roberto Bonciani Alexander A. Penin Alexander A. Penin

subject

Physics Nuclear and High Energy Physics Particle physics Standard Model 530 Physics Electromagnetic Processes and Properties High Energy Physics::Phenomenology FOS: Physical sciences Fermion LEP HERA and SLC Physics Loop (topology)High Energy Physics - Phenomenology Cross section (physics)High Energy Physics - Phenomenology (hep-ph)10231 Institute for Computational Science Heavy fermion Mass scale Vacuum polarization 3106 Nuclear and High Energy Physics Flavor Bhabha scattering

description

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.

year	journal	country	edition	language
2008-02-15	Journal of High Energy Physics

https://doi.org/10.1088/1126-6708/2008/02/080

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