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Light vectors coupled to anomalous currents with harmless Wess-Zumino terms

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arxiv 2204.05945 v2 pith:WH2WBTRI submitted 2022-04-12 hep-ph

Luca Di Luzio , Marco Nardecchia , Claudio Toni This is my paper · ORCID
classification hep-ph
keywords anomalouscoupledcurrentslightvectorstermswess-zuminoaccidental
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We reconsider the case of light vectors coupled to anomalous fermionic currents, focussing on the interplay between UV and IR dynamics. Taking as a general framework the gauging of the Standard Model accidental symmetries, we show that it is possible to devise an anomaly-free UV completion with mostly-chiral heavy fermions such that anomalous Wess-Zumino terms are suppressed in the IR, thus relaxing would-be strong bounds from the longitudinal emission of light vectors coupled to non-conserved currents. We classify such scenarios and show that they will be extensively probed at the high-luminosity phase of the LHC via the measurement of the $h \to Z \gamma$ rate and the direct search for non-decoupling charged leptons.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A framework for missing-energy searches with anomalous light vectors

    hep-ph 2026-03 conditional novelty 6.0 of 10

    For light U(1)X vectors coupled to anomaly-sensitive currents, Wess-Zumino coefficients are fixed by anomaly matching, which lets all missing-energy searches (K, B, D, Z) be mapped onto one (m_X,g_X) plane with minima...

  2. Vector Portals at Future Lepton Colliders

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Future lepton colliders could probe dark photon and L_mu-L_tau vector portals with one to two orders of magnitude better sensitivity than current constraints across masses from tens of GeV to a few TeV.

  3. Searching for hadronic scale baryonic and dark forces at $(g-2)_\mu$'s lattice-vs-dispersion front

    hep-ph 2024-12 conditional novelty 5.0 of 10

    A flavor-universal GeV-scale vector boson's direct contribution to (g-2)_mu cancels against its on-shell contribution to the e+e- -> hadrons data when the data-driven HVP is used, redirecting the search to the lattice...

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