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Dark matter, muon g−2, electric dipole moments, and Z→ℓi+ℓj− in a one-loop induced neutrino model

Cheng-Wei Chiang1,2,3,*, Hiroshi Okada3,†, and Eibun Senaha1,‡

  • 1Department of Physics, National Taiwan University, Taipei 10617, Taiwan
  • 2Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
  • 3Physics Division, National Center for Theoretical Sciences, Hsinchu 30013, Taiwan

  • *chengwei@phys.ntu.edu.tw
  • †macokada3hiroshi@cts.nthu.edu.tw
  • ‡eibunsenaha@ntu.edu.tw
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Phys. Rev. D 96, 015002 – Published 5 July, 2017

DOI: https://doi.org/10.1103/PhysRevD.96.015002

Abstract

We study a simple one-loop induced neutrino mass model that contains both bosonic and fermionic dark matter candidates and has the capacity to explain the muon anomalous magnetic moment anomaly. We perform a comprehensive analysis by taking into account the relevant constraints of charged lepton flavor violation, electric dipole moments, and neutrino oscillation data. We examine the constraints from lepton flavor-changing Z boson decays at the one-loop level, particularly when the involved couplings contribute to the muon g−2. It is found that BR(Z→μτ)≃(10−7–10−6) while BR(τ→μγ)≲10−11 in the fermionic dark matter scenario. The former can be probed by the precision measurement of the Z boson at future lepton colliders.

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Phys. Rev. D 96, 015002– Published 5 July, 2017
  • Received 30 March 2017

© 2017 American Physical Society

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