Implications of the Muon g-2 result on the flavour structure of the lepton mass matrix

Author:

Calibbi Lorenzo,López-Ibáñez M. L.ORCID,Melis Aurora,Vives Oscar

Abstract

AbstractThe confirmation of the discrepancy with the Standard Model predictions in the anomalous magnetic moment by the Muon g-2 experiment at Fermilab points to a low scale of new physics. Flavour symmetries broken at low energies can account for this discrepancy but these models are much more restricted, as they would also generate off-diagonal entries in the dipole moment matrix. Therefore, if we assume that the observed discrepancy in the muon $$g-2$$ g - 2 is explained by the contributions of a low-energy flavor symmetry, lepton flavour violating processes can constrain the structure of the lepton mass matrices and therefore the flavour symmetries themselves predicting these structures. We apply these ideas to several discrete flavour symmetries popular in the leptonic sector, such as $$\Delta (27)$$ Δ ( 27 ) , $$A_4$$ A 4 , and $$A_5 < imes \mathrm{CP}$$ A 5 CP .

Publisher

Springer Science and Business Media LLC

Subject

Physics and Astronomy (miscellaneous),Engineering (miscellaneous)

Reference75 articles.

1. Muon g-2 Collaboration, B.E. Abi, Measurement of the positive muon anomalous magnetic moment to 0.46 ppm. Phys. Rev. Lett. 126, 141801 (2021)

2. Muon g-2 Collaboration, H.N. Brown et al., Precise measurement of the positive muon anomalous magnetic moment. Phys. Rev. Lett. 86, 2227–2231 (2001). arXiv:hep-ex/0102017

3. T. Aoyama et al., The anomalous magnetic moment of the muon in the Standard Model. Phys. Rep. 887, 1–166 (2020). arXiv:2006.04822

4. A. Czarnecki, W.J. Marciano, The muon anomalous magnetic moment: a Harbinger for “new physics.” Phys. Rev. D 64, 013014 (2001). arXiv:hep-ph/0102122

5. Muon g-2 Collaboration, G.W. Bennett et al., Final report of the muon E821 anomalous magnetic moment measurement at BNL. Phys. Rev. D 73, 072003 (2006). arXiv:hep-ex/0602035

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