Fermionic NNLO contributions to Bhabha scattering

Details Fermionic NNLO contributions to Bhabha scattering Fermionic NNLO contributions to Bhabha scattering

2007-10-26

arxiv.org/abs/0710.5111v2

Acta Phys.Polon.B38:3517-3528,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

To be published in Acta Physica Polonica, based on the talk given at 31st International Conference of Theoretical Physics: Mat

Scientific paper

We derive the two-loop corrections to Bhabha scattering from heavy fermions using dispersion relations. The double-box contributions are expressed by three kernel functions. Convoluting the perturbative kernels with fermionic threshold functions or with hadronic data allows to determine numerical results for small electron mass m_e, combined with arbitrary values of the fermion mass m_f in the loop, $m_e^2<

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