What is the scale of new physics behind the muon 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>g</mml:mi><mml:mo>−</mml:mo><mml:mn>2</mml:mn></mml:math>
?

Allwicher, Lukas; Luzio, Luca Di; Fedele, Marco; Mescia, Federico; Nardecchia, Marco

doi:10.1103/physrevd.104.055035

Cited by 22 publications

(15 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[29][30][31][32][33][34][35][36][37][38][39][40], The a µ anomaly involves only leptons of the second generation and, taken alone, does not indicate any violation of flavour quantum numbers. It also does not provide a clear indication on the energy scale of the associated new dynamics [16,17].…”

Section: Introductionmentioning

confidence: 90%

See 1 more Smart Citation

Flavour alignment of New Physics in light of the (g − 2)μ anomaly

Isidori

Pagès

Wilsch

2022

J. High Energ. Phys.

View full text Add to dashboard Cite

We investigate the flavour alignment conditions that New Physics (NP) models need to satisfy in order to address the (g − 2)μ anomaly and, at the same time, be consistent with the tight bounds from μ → eγ and τ → μγ. We analyse the problem in general terms within the SMEFT, considering the renormalisation group evolution of all the operators involved. We show that semileptonic four-fermion operators, which are likely to generate a sizeable contribution to the (g − 2)μ anomaly, need to be tightly aligned to the lepton Yukawa couplings and the dipole operators in flavour space. While this tuning can be achieved in specific NP constructions, employing particular dynamical assumptions and/or flavour symmetry hypotheses, it is problematic in a wide class of models with broken flavour symmetries, such as those proposed to address both charged- and neutral-current B anomalies. We quantify this tension both in general terms, and in the context of explicit NP constructions.

show abstract

Section: Introductionmentioning

confidence: 90%

“…under the hypothesis of new degrees of freedom above the electroweak scale, has been presented in refs. [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Flavour alignment of New Physics in light of the (g − 2)μ anomaly

Isidori

Pagès

Wilsch

2022

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…Assuming that they are hints of NP, both the muon 𝑔 − 2 discrepancy and the 𝐵 anomalies require new fields coupling to muons at scales O (100) TeV [8,9]. Therefore, we find it natural to seek a common explanation of the two phenomena.…”

Section: Introduction and Motivationsmentioning

confidence: 92%

$B$ anomalies and muon $g-2$ from Dark Matter

Arcadi¹,

Fedele²,

Mescia³

2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Assuming that they are hints of NP, both the muon − 2 discrepancy and the anomalies require new fields coupling to muons at scales O (100) TeV [8,9]. Therefore, we find it natural to seek a common explanation of the two phenomena.…”

Section: Introduction and Motivationsmentioning

confidence: 92%