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A subtraction scheme for NNLO computations
Radja Boughezal, Kirill Melnikov, Frank Petriello
We use the known soft and collinear limits of tree- and one-loop scattering amplitudes -- computed over a decade ago -- to explicitly construct a subtraction scheme for next-to-nex…
Top quark pair production in association with a jet: QCD corrections and jet radiation in top quark decays
Kirill Melnikov, Andreas Scharf, Markus Schulze
We consider top quark pair production in association with a hard jet through next-to-leading order in perturbative QCD. Top quark decays are treated in the narrow width approximati…
Charged-Particle Decay at Finite Temperature
Andrzej Czarnecki, Marc Kamionkowski, Samuel K. Lee +1
Radiative corrections to the decay rate of charged fermions caused by the presence of a thermal bath of photons are calculated in the limit when temperatures are below the masses o…
The four-dimensional helicity scheme and dimensional reconstruction
Radja Boughezal, Kirill Melnikov, Frank Petriello
The four-dimensional helicity regularization scheme is often used in one-loop QCD computations. It was recently argued in Ref. [1] that this scheme is inconsistent beyond the one-l…
One-loop calculations in quantum field theory: from Feynman diagrams to unitarity cuts
R. Keith Ellis, Zoltan Kunszt, Kirill Melnikov +1
The success of the experimental program at the Tevatron re-inforced the idea that precision physics at hadron colliders is desirable and, indeed, possible. The Tevatron data strong…
Hadronic light-by-light scattering contribution to the muon magnetic anomaly: constituent quark loops and QCD effects
Radja Boughezal, Kirill Melnikov
The hadronic light-by-light scattering contribution to the muon anomalous magnetic moment can be estimated by computing constituent quark loops. Such an estimate is very sensitive…
NLO QCD corrections for W^+W^- pair production in association with two jets at hadron colliders
Tom Melia, Kirill Melnikov, Raoul Rontsch +1
We compute the NLO QCD corrections to the pair production of W-bosons in association with two jets at the Tevatron and the LHC. This process is an important background to heavy Hig…
Top quark spin correlations at the Tevatron and the LHC
Kirill Melnikov, Markus Schulze
Spin correlations of top quarks produced in hadron collisions have not been observed experimentally with large significance. In this Letter, we propose a new variable that may enab…
QCD corrections to top quark pair production in association with a photon at hadron colliders
Kirill Melnikov, Andreas Scharf, Markus Schulze
We compute QCD corrections to the production of a ttbar pair in association with a hard photon at the Tevatron and the LHC. This process allows a direct measurement of the top quar…