http://hdl.handle.net/20.500.12128/6978
Title: | Electroweak bosonic 2-loop corrections to the Z-pole precision observables |
Authors: | Dubovyk, Ievgen Gluza, Janusz Freitas, Ayres Riemann, Tord Usovitsch, Johann |
Keywords: | cząstki elementarne; oddziaływania elektrosłabe; Bozon Higgsa |
Issue Date: | 2017 |
Citation: | Acta Physica Polonica B, Vol. 48, no. 12 (2017), s. 2321-2329 |
Abstract: | Precision measurements of properties of the electroweak W - and Z-bosons provide strong constraints on the Standard Model (SM) and extensions thereof. This sensitivity crucially depends on the availability of accurate theoretical predictions for these quantities, including higher-order radiative corrections. This contribution gives a brief overview of available calculations and compares the estimate of theory uncertainties with the projected experimental precision of future e(+)e(-) collider proposals. Then it is shown how numerical Mellin-Barnes integrals can be used to evaluate higher-order loop integrals that depend on three or more independent mass and momentum scales. As a concrete physical application, the complete two-loop corrections to Z -> b (b) over bar are considered. |
URI: | http://hdl.handle.net/20.500.12128/6978 |
DOI: | 10.5506/APhysPolB.48.2321 |
ISSN: | 0587-4254 |
Appears in Collections: | Artykuły (WNŚiT) |
File | Description | Size | Format | |
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Dubovyk_Electroweak_bosonic_2_loop_corrections.pdf | 612,63 kB | Adobe PDF | View/Open |
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