Non-Abelian vector dark matter and lepton g-2

The mystery of dark matter remains an unsettled problem of particle physics. On top of that, experiments show a persistent contention of the muon anomalous magnetic moment (AMM) relative to the Standard Model (SM) prediction. In this work, we consider the possibility of extending the SM with a non-A...

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Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2021-10, Vol.2021 (10), p.14
Main Authors: Chowdhury, Talal Ahmed, Saad, Shaikh
Format: Article
Language:English
Subjects:
Anomalies
Bosons
Dark matter
dark matter theory
Fermions
Leptons
Magnetic moments
Muons
Particle physics
particle physics - cosmology connection
Standard model (particle physics)
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Summary:The mystery of dark matter remains an unsettled problem of particle physics. On top of that, experiments show a persistent contention of the muon anomalous magnetic moment (AMM) relative to the Standard Model (SM) prediction. In this work, we consider the possibility of extending the SM with a non-Abelian gauge symmetry SU(2) X , under which SM leptons transform non-trivially. SM leptons receive corrections to their AMMs of right order via one-loop processes mediated by beyond SM (BSM) fermions required to cancel anomalies, and BSM gauge bosons that play the role of dark matter. We show that simultaneous explanation of the muon AMM along with reproducing correct relic abundance allows rather a narrow range of 0.5–2 TeV dark matter mass, consistent with current experimental constraints. However, a concurrent description that also includes electron AMM is challenging in this set-up.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2021/10/014