Hadronic Vacuum Polarization:<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo stretchy="false">(</mml:mo><mml:mi>g</mml:mi><mml:mo>−</mml:mo><mml:mn>2</mml:mn><mml:msub><mml:mo stretchy="false">)</mml:mo><mml:mi>μ</mml:mi></mml:msub></mml:math>versus Global Electroweak Fits

Crivellin, Andreas; Hoferichter, Martin; Manzari, Claudio Andrea; Montull, Marc

doi:10.1103/physrevlett.125.091801

Cited by 209 publications

(127 citation statements)

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“…where F Z L = (−1/2+sin 2 θ W )g 2 / cos θ W and F Z R = sin 2 θ W g 2 / cos θ W are the left-and righthanded couplings of the tree-level Z¯ vertex, with g 2 being the SU(2) L gauge coupling. The one-loop renormalized effective couplingsF Z L,R calculated by keeping only the logarithmic charged-lepton mass dependence are given, respectively, bŷ 14) in the degenerate limit of Higgs mass spectrum, with…”

Section: Compatibility With the Z τ Decay Data And The Lhc Boundsmentioning

confidence: 99%

Power-aligned 2HDM: a correlative perspective on (g − 2)e,μ

et al. 2021

J. High Energ. Phys.

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With the hypothesis of minimal flavor violation, we find that there exists a power-aligned relation between the Yukawa couplings of the two scalar doublets in the two-Higgs-doublet model with Hermitian Yukawa matrices. Within such a power-aligned framework, it is found that a simultaneous explanation of the anomalies observed in the electron and muon anomalous magnetic moments can be reached with TeV-scale quasi-degenerate Higgs masses, and the resulting parameter space is also phenomenologically safer under the B-physics, Z and τ decay data, as well as the current LHC bounds. Furthermore, the flavor-universal power that enhances the charged-lepton Yukawa couplings prompts an interesting correlation between the two anomalies, which makes the model distinguishable from the (generalized) linearly aligned and the lepton-specific two-Higgs-doublet models that address the same anomalies but in a non-correlative manner, and hence testable by future precise measurements.

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Section: Compatibility With the Z τ Decay Data And The Lhc Boundsmentioning

confidence: 99%

Power-aligned 2HDM: a correlative perspective on (g − 2)e,μ

et al. 2021

J. High Energ. Phys.

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“…A recent lattice-QCD result [16] for HVP brought the SM prediction of (g − 2) of the muon into agreement with experiments. However, this result is in tension with e þ e − → hadrons cross-section data and global fits to electroweak precision observables [17].…”

Section: Introductionmentioning

confidence: 71%

( g−2 ) anomalies and neutrino mass

et al. 2020

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Motivated by the experimentally observed deviations from standard model predictions, we calculate the anomalous magnetic moments a α ¼ ðg − 2Þ α for α ¼ e, μ in a neutrino mass model originally proposed by Babu, Nandi, and Tavartkiladze (BNT). We discuss two variants of the model: the original model, and a minimally extended version with an additional hypercharge-zero triplet scalar. While the original BNT model can explain a μ , only the variant with the triplet scalar can explain both experimental anomalies. The heavy fermions of the model can be produced at the high-luminosity LHC, and in the part of parameter space where the model explains the experimental anomalies it predicts certain specific decay patterns for the exotic fermions.

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“…Discussions with the authors of Ref. [13] are also acknowledged. I also wish to thank the referee for suggesting improvements and clarifications.…”

Section: Acknowledgmentsmentioning

confidence: 94%

“…(4.12) have been disused in Refs. [13,14]. However, it is also possible to construct models that do not give such large shifts.…”

Section: A the Constituent Chiral Quark Modelmentioning

confidence: 99%

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Constraints between Δαhad(MZ2) and
Rafael
¹

2020
Phys. Rev. D
33
0
21
0
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I discuss the possibility of estimating the shift δΔαðM 2 Z Þ on the running of the EM-coupling to the M Z scale, induced by the discrepancy Δa μ between two precise determinations of the hadronic vacuum polarization contribution to g μ − 2. It is shown that the size of Δa μ implies rigorous bounds on the δΔαðM 2 Z Þ-shift. Any extra contribution to this minimal shift necessarily depends on the specific shape of the underlying spectral function 1 π ImΔðtÞ responsible for the Δa μ-discrepancy. I show that, in the case of a quark model, the total ΔαðM 2 Z Þ-shift remains small. I also discuss the scenario where 1 π ImΔðtÞ is a constant in a finite t-region and show that in this case, up to a t max ≾ 5 GeV 2 , the size of the total δΔα ð5Þ had ðM 2 Z Þ-shift, remains below or of the order of the present error value on Δα ð5Þ had ðM 2 Z Þ.

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Hadronic Vacuum Polarization:(g−2)μversus Global Electroweak Fits

Cited by 209 publications

References 99 publications

Power-aligned 2HDM: a correlative perspective on (g − 2)e,μ

Power-aligned 2HDM: a correlative perspective on (g − 2)e,μ

( g−2 ) anomalies and neutrino mass

Constraints between Δαhad(MZ2) and
Rafael
¹

2020
Phys. Rev. D
33
0
21
0
View full text Add to dashboard Cite

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Hadronic Vacuum Polarization:(g−2)μversus Global Electroweak Fits

Cited by 209 publications

References 99 publications

Power-aligned 2HDM: a correlative perspective on (g − 2)e,μ

Power-aligned 2HDM: a correlative perspective on (g − 2)e,μ

( g−2 ) anomalies and neutrino mass

Constraints between Δαhad(MZ2) and Rafael1 2020Phys. Rev. D330210View full textAdd to dashboardCite

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About

Constraints between Δαhad(MZ2) and
Rafael
¹

2020
Phys. Rev. D
33
0
21
0
View full text Add to dashboard Cite