Competing Sudakov veto algorithms

Fooling Around with the Sudakov Veto Algorithm

The Sudakov veto algorithm for generating emission and no-emission probabilities in parton showers is revisited and some reweighting techniques are suggested to improve statistics by oversampling in specific cases.

Fusing Competing Prediction Algorithms for Prognostics (preprint)

Sudakov Form Factors

The theory of the on-shell Sudakov form factor to all order of logarithms is explained.

Anomalous Sudakov Form Factors

While radiative corrections of infrared origin normally depress high energy amplitudes (Sudakov form factors), we find that in some cases resummation of leading effects produces exponentials with positive exponents, giving rise to amplitudes that grow indefinitely with energy. The effect happens in broken gauge theories like the electroweak sector of the Standard Model, and is related to the ex...

Sudakov Resummations at Higher Orders ∗

We summarize our recent results on the resummation of hard-scattering coefficient functions and on-shell form factors in massless perturbative QCD. The threshold resummation has been extended to the fourth logarithmic order for deep-inelastic scattering, Drell-Yan lepton pair production and Higgs production via gluon-gluon fusion. The leading six infrared pole terms have been derived to all ord...