Aug 27 – 31, 2018
TU Dresden
Europe/Zurich timezone

Using Pseudo-Dipoles for Resonance-Aware NLO-Subtraction

Aug 28, 2018, 5:14 PM
17m
POT/151 (TU Dresden)

POT/151

TU Dresden

https://navigator.tu-dresden.de/etplan/pot/01/raum/325301.0010
Monte Carlo and Resummation Monte Carlo and resummation

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)

Presentation materials