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Weak mixing angle in the Thomson limit

Erler, Jens ; Ferro-Hernández, Rodolfo

The journal of high energy physics, 2018-03, Vol.2018 (3), p.1-23, Article 196 [Periódico revisado por pares]

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Título:
Weak mixing angle in the Thomson limit
Autor: Erler, Jens ; Ferro-Hernández, Rodolfo
Assuntos: Classical and Quantum Gravitation ; Elementary Particles ; Physics ; Physics and Astronomy ; Quantum Field Theories ; Quantum Field Theory ; Quantum Physics ; Quark Masses and SM Parameters ; Regular Article - Theoretical Physics ; Relativity Theory ; Resummation ; String Theory
É parte de: The journal of high energy physics, 2018-03, Vol.2018 (3), p.1-23, Article 196
Descrição: A bstract We present a calculation of the weak mixing angle in the M S ¯ renormalization scheme which is relevant for experiments performed at very low energies or momentum transfers. We include higher orders in the perturbative QCD expansion, as well as updated phenomenological and theoretical input, and obtain the result sin 2 θ ^ W 0 = 0.23868 5 2 for the reference values α ^ s M Z = 0.1182 and m ^ c m ^ c = 1.272 GeV . The first quoted error is from the current Standard Model evaluation of the mixing angle at the Z boson mass scale. The second error represents the theoretical and parametric uncertainties induced by the evolution to the Thomson limit and is discussed in detail.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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