655 citations · 1.2k across the 15 of their papers we have counts for
16 papers
Effective theory calculation of resonant high-energy scattering
M. Beneke, A. P. Chapovsky, A. Signer +1
Tests of the standard model and its hypothetical extensions require precise theoretical predictions for processes involving massive, unstable particles. It is well-known that ordin…
Effective theory approach to unstable particle production
M. Beneke, A. P. Chapovsky, A. Signer +1
Using the hierarchy of scales between the mass, , and the width, , of a heavy, unstable particle we construct an effective theory that allows calculations for resonant proces…
Towards an effective-action approach to fermion-loop corrections
W. Beenakker, A. P. Chapovsky, A. Kanaki +2
We present a study of the effective action approach to incorporate higher-order effects in e^+e^- -> n fermions. In its minimal version, the effective action approach is found to e…
Soft-collinear effective theory and heavy-to-light currents beyond leading power
M. Beneke, A. P. Chapovsky, M. Diehl +1
An important unresolved question in strong interaction physics concerns the parameterization of power-suppressed long-distance effects to hard processes that do not admit an operat…
Non-factorizable corrections and effective field theories
A. P. Chapovsky, V. A. Khoze, A. Signer +1
We analyze the structure of higher-order radiative corrections for processes with unstable particles. By subsequently integrating out the various scales that are induced by the pre…
Impact of the W boson decay width on photon bremsstrahlung accompanying W pair production
A. P. Chapovsky, V. A. Khoze, W. J. Stirling
The bremsstrahlung spectrum of photons accompanying pair production depends on the decay width of the unstable bosons. The dependence arises from the interference between e…