Electroweak one-loop corrections to the decay of the neutral vector boson

Akhundov, A.A.; Bardin, D. Y.; Riemann, T.

doi:10.1016/0550-3213(86)90014-3

Cited by 215 publications

(81 citation statements)

References 10 publications

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“…Our measurement agrees with the expected partial width in the standard model, Fb6 = 379 MeV [13] (forMz=91.160GeV [3],as=0.12, Mtop= 100 OeV, and MHiggs = 100 GeV).…”

Section: Measurement Of Z °-- Bbsupporting

confidence: 78%

Measurement of Z0 → b decay properties

et al. 1990

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General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. We have measured the properties of Z°--,bl] decays using a sample of 944 inclusive muon events, corresponding to 18000 hadron events obtained with the L3 detector at LEP. We measured the partial decay width of the Z ° into bb, Fb6 = 353 _+ 48 MeV, and we determined the vector coupling of the Z ° to the b quark; g~,(b)=0.095 _+ 0.047. We measured the forward-backward charge asymmetry in e + e-~bl~ events at ,,/s ~ Mz, and obtained Ab~ = 13.3 _+ 9.9%.

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“…Our measurement agrees with the expected partial width in the standard model, Fb6 = 379 MeV [13] (forMz=91.160GeV [3],as=0.12, Mtop= 100 OeV, and MHiggs = 100 GeV).…”

Section: Measurement Of Z °-- Bbsupporting

confidence: 78%

Measurement of Z0 → b decay properties

et al. 1990

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“…It includes up to two-loop electroweak corrections [1,2,[4][5][6][7][8][9][10][11][12][13] and all known QCD corrections [1,2,14]. In these calculations the intermediate on-shell mass scheme [2] is used, which lies between OMS-I and OMS-II.…”

Section: Correction Of Rmentioning

confidence: 99%

“…1 "Introduction" The sentence should be replaced by "The calculations of the partial and total widths of the Z and of the total width of the W boson have been integrated from the ZFITTER package [1,2] into the Gfitter subpackage GSM and are co-authored by both groups [3]. 1 It includes up to two-loop electroweak corrections [1,2,[4][5][6][7][8][9][10][11][12][13] and all known QCD corrections [1,2,14]. "…”

mentioning

confidence: 99%

Erratum to: Revisiting the global electroweak fit of the Standard Model and beyond with Gfitter

et al. 2011

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Our above-mentioned publication requires changes of citations in the description of the global electroweak fit of the Standard Model and corrections of mistakes in the results of the fit of the two Higgs doublet model (2HDM). We emphasise in particular the use of ZFITTER implementations [1,2] for the calculation of the partial and total widths of the Z and of the total width of the W boson. The following changes should be made.Replacement of the sixth sentence in the fourth paragraph in Sect. 1 "Introduction" The sentence should be replaced by "The calculations of the partial and total widths of the Z and of the total width of the W boson have been integrated from the ZFITTER package [1,2] into the Gfitter subpackage GSM and are co-authored by both groups [3]. 1 It includes up to two-loop electroweak corrections [1,2,[4][5][6][7][8][9][10][11][12][13] and all known QCD corrections [1,2,14]." Correction of R 0b constraints For the theoretical prediction of the electroweak precision observable R 0 b in the 2HDM we used Eqs. (6.3) and (6.4) from Ref. [15]. These equations contained a misprint and the common factors e/(s W c W ) should be removed. We are grateful to Pietro Slavich and Giuseppe Degrassi for drawing our attention to this. After correction we obtain slightly tighter exclusion regions for [1,2,14]. In these calculations the intermediate on-shell mass scheme [2] is used, which lies between OMS-I and OMS-II."Replacement of the third sentence in Sect. A.4 "Radiator functions" The sentence should be replaced by "The following formulae as implemented in the Gfitter subpackage GSM are taken from [13] and the ZFITTER package [1, 2] (cf. Footnote 1). The relevant implementations are coauthored by both groups [3]."

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“…Contributions from box and vertex diagrams with heavy new particles are typically small. However, in the context of the SM, the Z-b-b vertex receives an important contribution from heavy top loops [5][6][7], leading us to speculate whether new physics may also play a role in direct corrections.…”

Section: Introductionmentioning

confidence: 99%

The effect of new physics on

Liu¹,

Ng²

1995

Physics Letters B

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Motivated by the ∼ 2σ discrepancy between the experimental value for R b and the theoretical prediction of the Standard Model, we examine the effect of new physics on the Z-b-b vertex. Using general results for both new scalars and gauge bosons, we show that two conditions must be satisfied in order for new physics to give observable deviations in the vertex. In particular, the fermion in the loop must transform chirally under SU (2) × U (1) and it must be massive compared to the exchanged boson. We examine the implications of these results on the 2 Higgs Doublet model and the Left-Right Symmetric model.

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Electroweak one-loop corrections to the decay of the neutral vector boson

Cited by 215 publications

References 10 publications

Measurement of Z0 → b decay properties

Measurement of Z0 → b decay properties

Erratum to: Revisiting the global electroweak fit of the Standard Model and beyond with Gfitter

The effect of new physics on

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