Next-to-Next-to-Leading Logarithms in Four-Fermion Electroweak Processes at High Energy
High Energy Physics - Phenomenology
2009-11-07 v3
Abstract
We sum up the next-to-next-to-leading logarithmic virtual electroweak corrections to the high energy asymptotics of the neutral current four-fermion processes for light fermions to all orders in the coupling constants using the evolution equation approach. From this all order result we derive finite order expressions through next-to-next-to leading order for the total cross section and various asymmetries. We observe an amazing cancellation between the sizable leading, next-to-leading and next-to-next-to-leading logarithmic contributions at TeV energies.
Keywords
Cite
@article{arxiv.hep-ph/0106298,
title = {Next-to-Next-to-Leading Logarithms in Four-Fermion Electroweak Processes at High Energy},
author = {J. H. Kühn and S. Moch and A. A. Penin and V. A. Smirnov},
journal= {arXiv preprint arXiv:hep-ph/0106298},
year = {2009}
}
Comments
latex, 20 pages; coupling constant in the fermionic contribution to the electroweak corrections corrected