QCD NLO with POWHEG matching and top threshold matching in WHIZARD
Creators
- 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.
Files
47081457.pdf
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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)
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 47081457
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ANNIHILATION; AUTOMATION; COMPUTERIZED SIMULATION; ELECTRON-POSITRON INTERACTIONS; FEYNMAN DIAGRAM; INTEGRAL CALCULUS; MASSLESS PARTICLES; MATRIX ELEMENTS; NUMERICAL SOLUTION; P CODES; P WAVES; PAIR PRODUCTION; PERTURBATION THEORY; PHASE SPACE; QUANTUM CHROMODYNAMICS; RELATIVISTIC RANGE; REST MASS; S WAVES; W CODES; WEINBERG-SALAM GAUGE MODEL
- Descriptors DEC
- COMPUTER CODES; DIAGRAMS; ELEMENTARY PARTICLES; ENERGY RANGE; FIELD THEORIES; INFORMATION; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; MASS; MATHEMATICAL MODELS; MATHEMATICAL SOLUTIONS; MATHEMATICAL SPACE; MATHEMATICS; PARTIAL WAVES; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; QUANTUM FIELD THEORY; SIMULATION; SPACE; UNIFIED GAUGE MODELS; UNIFIED-FIELD THEORIES
Optional Information
- Secondary number(s)
- MITP--16-007; SI-HEP--2016-02