Two-Loop Electroweak Logarithms in Four-Fermion Processes at High Energy

Bernd Jantzen; Johann H. Kühn; Alexander A. Penin; Vladimir A. Smirnov

doi:10.1016/j.nuclphysb.2005.10.010 10.1016/j.nuclphysb.2006.07.004

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arXiv · hep-ph/0509157

Two-Loop Electroweak Logarithms in Four-Fermion Processes at High Energy

Bernd Jantzen·Johann H. Kühn·Alexander A. Penin·Vladimir A. Smirnov

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Abstract

We present the complete analytical result for the two-loop logarithmically enhanced contributions to the high energy asymptotic behavior of the vector form factor and the four-fermion cross section in a spontaneously broken SU(2) gauge model. On the basis of this result we derive the dominant two-loop electroweak corrections to the neutral current four-fermion processes at high energies. Previously neglected effects of the gauge boson mass difference are included through the next-to-next-to-leading logarithmic approximation.

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Bernd Jantzen, Johann H. Kühn, Alexander A. Penin, Vladimir A. Smirnov. 2008-05-07. Two-Loop Electroweak Logarithms in Four-Fermion Processes at High Energy. https://doi.org/10.1016/j.nuclphysb.2005.10.010%2010.1016%2Fj.nuclphysb.2006.07.004

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