Four-Fermion Production in Electron-Positron Collisions
Martin W. Gruenewald, Giampiero Passarino, E. Accomando, A., Ballestrero, P. Bambade, D. Bardin, W. Beenakker, F. Berends, E. Boos, A., Chapovsky, A. Denner, S. Dittmaier, M. Dubinin, J. B. Hansen, V. Ilyin, S., Jadach, Y. Kurihara, M. Kuroda, E. Maina, G. Montagna, M. Moretti
TL;DR
This paper reviews recent theoretical advancements in calculating four-fermion processes in electron-positron collisions at LEP-2 energies, focusing on key reactions and assessing uncertainties across different methods.
Contribution
It provides a comprehensive comparison of approaches for four-fermion process predictions, establishing theoretical uncertainties and summarizing recent developments.
Findings
Predictions for W-pair, single-W, Z-pair, and photon production are compared.
Theoretical uncertainties for these processes are quantified.
Recent calculation methods have improved accuracy in modeling four-fermion events.
Abstract
This report summarises the results of the four-fermion working group of the LEP2-MC workshop, held at CERN from 1999 to 2000. Recent developments in the calculation of four-fermion processes in electron-positron collisions at LEP-2 centre-of-mass energies are presented, concentrating on predictions for four main reactions: W-pair production, visible photons in four-fermion events, single-W production and Z-pair production. Based on a comparison of results derived within different approaches, theoretical uncertainties on these predictions are established.
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Taxonomy
TopicsQuantum and Classical Electrodynamics · Atomic and Molecular Physics · Muon and positron interactions and applications