Year: 2011
Type: conference-paper
Abstract: In this talk we present techniques for calculating one-loop amplitudes for multi-leg processes using Feynman diagrammatic methods in a semi-algebraic context.Our approach combines the advantages of the different methods allowing for a fast evaluation of the amplitude while monitoring the numerical stability of the calculation.In phase space regions close to singular kinematics we use a method avoiding spurious Gram determinants in the calculation.As an application of our approach we report on the status of the calculation of the amplitude for the process pp → b bb b + X. CPP2010,
DOI: 10.22323/1.131.0003
Authors: Thomas Reiter, Gavin Cullen, Nicolas Greiner, Alberto Guffanti, Jean-Philippe Guillet, Gudrun Heinrich, Stefan Karg, Nikolas Kauer, Tobias Kleinschmidt, Maciej Koch-Janusz, Gionata Luisoni, Pierpaolo Mastrolia, Giovanni Ossola, Eric Pilon, Mark Rodgers, Francesco Tramontano, Ioan T. Wigmore
Institutions: National Institute for Subatomic Physics, University of Edinburgh, University of Illinois Urbana-Champaign, University of Freiburg, Laboratoire d'Annecy de Physique Théorique, Durham University, RWTH Aachen University, Royal Holloway University of London, University of Salerno, European Organization for Nuclear Research, City University of New York, New York City College of Technology, Centro Ricerche Enrico Fermi
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
OpenAlex ID: W2792053391