Electron EDM and LFV decays in the light of Muon $(g-2)_\mu$ with U(2) flavor symmetry

Author:

Morimitsu Tanimoto, Kei Yamamoto

Keyword:

High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph)

journal:

date:

2023-10-24 16:00:00

Abstract

We study the interplay of New Physics (NP) among the lepton magnetic moment, the lepton flavor violation (LFV) and the electron electric dipole moment (EDM) in the light of recent data of the muon $(g-2)_\mu$. The NP is discussed in the leptonic dipole operator with the $U(2)$ flavor symmetry of the charged leptons, where possible CP violating phases of the three family space are taken into account. It is remarked that the third-family contributes significantly to the LFV decay, $\mu \to e\gamma$, and the electron EDM. The experimental upper-bound of the $\mu \to e\gamma$ decay gives a severe constraint for parameters of the flavor model. The predicted electron EDM is rather large due to CP violating phases in the three family space. In addition, we also study $(g-2)_{e,\tau}$ of the electron and tauon, and EDMs of the muon and tauon as well as the $\tau \to e \gamma$ and $\tau \to \mu \gamma$ decays. The $\tau_R \to \mu_L \gamma$ decay is predicted close to the experimental upper-bound. The $\tau_R \to e_L \gamma$ decay is not suppressed.

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