TTP01-15 Next-to-Next-to-Leading Logarithms in Four-Fermion Electroweak Processes at High Energy

TTP01-15 Next-to-Next-to-Leading Logarithms in Four-Fermion Electroweak Processes at High Energy

TTP01-15 Next-to-Next-to-Leading Logarithms in Four-Fermion Electroweak Processes at High Energy

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.

J.H.~K\“uhn, S.~Moch, A.A.~Penin, V.A.~Smirnov
Nucl. Phys. B616 286-306 2001
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