Logo der Universität Wien
You are here:>University of Vienna >Faculty of Physics


Simone Alioli (CERN): The GENEVA Monte Carlo framework: improving SMC with resummation

Tuesday, 25. April 2017, 16:15

Location:  Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock

I will discuss the GENEVA Monte Carlo framework, as an example of how to include analytic resummation in Shower Monte Carlo event generators. GENEVA combines the fully-differential NNLO calculation with higher-order resummation of the resolution parameter, providing a systematic assessment of perturbative uncertainties.
The resulting parton-level events are further combined with parton showering and hadronization in Pythia 8. For the Drell-Yan case presented, the 0-jettiness resummation is carried out to NNLL', which consistently incorporates all singular virtual and real NLO corrections. In this way, the perturbative accuracy of 0-jet-like resummation variables is significantly improved beyond the parton shower approximation. I will show comparisons with LHC measurements at 7 TeV from ATLAS, CMS and LHCb, including results for several underlying-event sensitive observables.

Faculty of Physics
University of Vienna

Boltzmanngasse 5
1090 Vienna

Dean's Office:
Tue, Wed, Fri 9-12
Thu 14-16

T: +43-1-4277-510 01
F: +43-1-4277-9 510
University of Vienna | Universitätsring 1 | 1010 Vienna | T +43-1-4277-0