Speaker
Sebastian Liebschner
(IKTP Dresden)
Description
NLO-subtraction schemes such as CS-dipole-subtraction are indispensable for MC-Generators to calculate real and virtual corrections efficiently. However, those algorithms suffer from numerical inefficiencies and even cause distortions in physical distributions when interfaced with parton showers, if the process in question comprises potentially resonant particles.
In this talk I will elucidate this matter and offer an alternative subtraction-scheme, which makes use of so called pseudo-dipoles. I will show results, which have been calculated with a SHERPA-implementation of this new pseudo-dipole-subtraction and compare them to the ones obtained with ordinary CS-dipole-subtraction.
Primary authors
Sebastian Liebschner
(IKTP Dresden)
Frank Siegert
(Technische Universitaet Dresden (DE))
Dr
Stefan Hoeche
(SLAC)
