Aachen 2019 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 46: Theorie: QCD

T 46.1: Vortrag

Dienstag, 26. März 2019, 16:00–16:15, ST 8

Resonance-Aware Subtraction in the Dipole Methode — •Sebastian Liebschner¹, Frank Siegert¹, and Stefan Höche² — ¹Institut für Kern- und Teilchenphysik, TU Dresden, 01069 Dresden, Germany — ²SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA

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.