Theory of Z boson decays

The precision data on Z boson decays from LEP-I and SLC colliders are compared with the predictions based on the Minimal Standard Theory. The Born approximation of the theory is based on three most accurately known observables: G_mu -- the four fermion coupling constant of muon decay, m_Z -- the mas...

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Bibliographic Details
Published inReports on progress in physics Vol. 62; no. 9; pp. 1275 - 1332
Main Authors Novikov, V A, Okun, L B, Rozanov, A N, Vysotsky, M I
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.09.1999
Subjects
High Energy Physics - Theory
Physics
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Summary:The precision data on Z boson decays from LEP-I and SLC colliders are compared with the predictions based on the Minimal Standard Theory. The Born approximation of the theory is based on three most accurately known observables: G_mu -- the four fermion coupling constant of muon decay, m_Z -- the mass of the Z boson, and alpha(m_Z) -- the value of the running fine structure constant at the scale of m_Z. The electroweak loop corrections are expressed, in addition, in terms of the masses of higgs, m_H, of the top and bottom quarks, m_t and m_b, and of the strong interaction constant alpha_s(m_Z). The main emphasis of the review is focused on the one-electroweak-loop approximation. Two electroweak loops have been calculated in the literature only partly. Possible manifestations of new physics are briefly discussed.
ISSN:0034-4885
1361-6633
DOI:10.1088/0034-4885/62/9/201