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- Centre National de la Recherche ScientifiqueFR13 papers
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21 papers · 2 filters
QCD radiation in the production of heavy colored particles at the LHC
Johan Alwall, Simon de Visscher, Fabio Maltoni
We present a study of effects of QCD radiation in the production of heavy colored states, employing inclusive multi-jet samples obtained by matching matrix elements and parton show…
Quantum Gravitational Effects and Grand Unification
Xavier Calmet, Stephen D. H. Hsu, David Reeb
In grand unified theories with large numbers of fields, renormalization effects significantly modify the scale at which quantum gravity becomes strong. This in turn can modify the…
New Developments in MadGraph/MadEvent
Johan Alwall, Pierre Artoisenet, Simon de Visscher +4
We here present some recent developments of MadGraph/MadEvent since the latest published version, 4.0. These developments include: Jet matching with Pythia parton showers for both…
Associated Production of a W Boson and One b Jet
J. Campbell, R. Keith Ellis, F. Febres Cordero +4
We calculate the production of a W boson and a single b jet to next-to-leading order in QCD at the Fermilab Tevatron and the CERN Large Hadron Collider. Both exclusive and inclusiv…
Automation of the Dipole Subtraction Method in MadGraph/MadEvent
Rikkert Frederix, Thomas Gehrmann, Nicolas Greiner
We present the implementation of the dipole subtraction formalism for the real radiation contributions to any next-to-leading order QCD process in the MadGraph/MadEvent framework.…
Antenna functions from MHV rules
Claude Duhr, Fabio Maltoni
QCD amplitudes display a universal behaviour when one or more partons are soft and/or collinear. This can expressed in terms of antenna functions which are much simpler than the fu…