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40 papers · 2 filters
An alternative subtraction scheme for next-to-leading order QCD calculations
Cheng-Han Chung, Michael Krämer, Tania Robens
We propose a new subtraction scheme for next-to-leading order QCD calculations. Our scheme is based on the momentum mapping and on the splitting functions derived in the context of…
Electroweak non-resonant corrections to top pair production close to threshold
M. Beneke, B. Jantzen, P. Ruiz-Femenia
The production of W+ W- b bbar from e+ e- collisions at energies close to the t tbar threshold is dominated by the resonant process with a nearly on-shell t tbar intermediate state…
Complete off-shell effects in top quark pair hadroproduction with leptonic decay at next-to-leading order
Giuseppe Bevilacqua, Michal Czakon, Andreas van Hameren +2
Results for next-to-leading order QCD corrections to the pp(p\bar{p}) -> t \bar{t} -> W^+W^- b\bar{b} -> e^{+} ν_{e} μ^{-} \barν_μ b \bar{b} +X processes with complete off-shell ef…
The Extended Higgs System in -symmetric Supersymmetry Theories
S. Y. Choi, D. Choudhury, A. Freitas +2
The Higgs sector is extended in -symmetric supersymmetry theories by two iso-doublets which complement the standard iso-doublets . We have analyzed masses and…
Reweighting NNPDFs: the W lepton asymmetry
The NNPDF Collaboration, Richard D. Ball, Valerio Bertone +7
We present a method for incorporating the information contained in new datasets into an existing set of parton distribution functions without the need for refitting. The method inv…
Modern Feynman Diagrammatic One-Loop Calculations
Thomas Reiter, Gavin Cullen, Nicolas Greiner +14
In this talk we present techniques for calculating one-loop amplitudes for multi-leg processes using Feynman diagrammatic methods in a semi-algebraic context. Our approach combines…