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A Tale of Two Anomalies

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arxiv 1806.10252 v2 pith:XSS3MLP6 submitted 2018-06-26 hep-ph

Hooman Davoudiasl , William J. Marciano This is my paper · ORCID
classification hep-ph
keywords electronscalaranomaliesanomalousdiscrepancymagneticmomentsigma
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abstract

A recent improved determination of the fine structure constant, $\alpha= 1/137.035999046(27)$, leads to a $\sim 2.4 \sigma$ negative discrepancy between the measured electron anomalous magnetic moment and the Standard Model prediction. That situation is to be compared with the muon anomalous magnetic moment where a positive $\sim 3.7 \sigma$ discrepancy has existed for some time. A single scalar solution to both anomalies is shown to be possible if the two-loop electron Barr-Zee diagrams dominate the scalar one-loop electron anomaly effect and the scalar couplings to the electron and two photons are relatively large. We also briefly discuss the implications of that scenario.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. New physics and tau $g-2$ using LHC heavy ion collisions

    hep-ph 2019-08 conditional novelty 7.0 of 10

    Using ultraperipheral lead-lead collisions, a lepton-plus-tracks analysis could constrain the tau anomalous magnetic moment to -0.0080 < a_tau < 0.0046 at 68% CL, three times better than DELPHI.

  2. Constraints on scalar leptoquarks from lepton and kaon physics

    hep-ph 2019-08 accept novelty 6.0 of 10

    Scalar leptoquark couplings are constrained by a comprehensive set of upper bounds from tau, muon, electron, and kaon decay data, including standard model interference in rare K to pi l+ l- modes.

  3. Explanation of electron and muon g-2 anomalies in the MSSM

    hep-ph 2019-08 conditional novelty 6.0 of 10

    The paper shows that the electron and muon g-2 anomalies, which have opposite signs, can be simultaneously reproduced in the MSSM by making selectrons light and smuons heavy, with a wino-like chargino near the LEP bound.

  4. Resolving the $(g-2)_{\mu}$ and $B$ anomalies with leptoquarks and a dark Higgs boson

    hep-ph 2019-08 conditional novelty 5.0 of 10

    A model with a light dark Higgs and TeV-scale leptoquarks can simultaneously explain the muon g-2 and B decay anomalies, and predicts rare B, K, and Higgs decays within reach of current experiments.

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