Method for taking into account hard-photon emission in four-fermion processes

A method for taking into account hard-photon emission in four-fermion processes proceeding in the s channel is described. The application of this method is exemplified by numerically estimating one-loop electroweak corrections to observables (cross sections and asymmetries) of the reaction e − e + →...

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Veröffentlicht in:	Physics of atomic nuclei 2016-01, Vol.79 (1), p.78-94
Hauptverfasser:	Aleksejevs, A. G., Barkanova, S. G., Zykunov, V. A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Analysis ASYMMETRY ATOMIC AND MOLECULAR PHYSICS Colliders (Nuclear physics) Collisions (Nuclear physics) CORRECTIONS CROSS SECTIONS ELECTRON-POSITRON INTERACTIONS Elementary Particles and Fields FERMIONS FOUR-BODY PROBLEM Methods Particle and Nuclear Physics PHOTON EMISSION Physics Physics and Astronomy S CHANNEL UNIFIED FIELD THEORIES WEINBERG-SALAM GAUGE MODEL ZBARYONS
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Beschreibung
Zusammenfassung:	A method for taking into account hard-photon emission in four-fermion processes proceeding in the s channel is described. The application of this method is exemplified by numerically estimating one-loop electroweak corrections to observables (cross sections and asymmetries) of the reaction e − e + → μ − μ + ( γ ) involving longitudinally polarized electrons and proceeding at energies below the Z -resonance energy.
ISSN:	1063-7788 1562-692X
DOI:	10.1134/S1063778815090021