Published January 2016 | Version v1
Report Open

QCD NLO with POWHEG matching and top threshold matching in WHIZARD

  • 1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Theory Group
  • 2. European Commission, Luxembourg (Luxembourg)
  • 3. Siegen Univ. (Germany)
  • 4. Mainz Univ. (Germany). PRISMA Cluster of Excellence

Description

We present the status of the automation of NLO processes within the event generator WHIZARD. The program provides an automated FKS subtraction and phase space integration over the FKS regions, while the (QCD) NLO matrix element is accessed via the Binoth Les Houches Interface from an externally linked one-loop program. Massless and massive test cases and validation are shown for several e+e- processes. Furthermore, we discuss work in progress and future plans. The second part covers the matching of the NRQCD prediction with NLL threshold resummation to the NLO continuum top pair production at lepton colliders. Both the S-wave and P-wave production of the top pair are taken into account in the resummation. The inclusion in WHIZARD allows to study more exclusive observables than just the total cross section and automatically accounts for important electroweak and relativistic corrections in the threshold region.

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Additional details

Publishing Information

Imprint Pagination
9 p.
ISSN
0418-9833
Report number
DESY--15-176

Conference

Title
12. International symposium on radioactive corrections; LoopFest 14: International symposium on radiative corrections for the LHC and future colliders
Acronym
Radcor 2015
Dates
15-19 Jun 2015
Place
Los Angeles, CA (United States)

Optional Information

Secondary number(s)
MITP--16-007; SI-HEP--2016-02