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Anomalous $Z'$ and Diboson Resonances at the LHC
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abstract
We propose novel collider searches which can significantly improve the LHC reach to new gauge bosons $Z'$ with mixed anomalies with the electroweak (EW) gauge group. Such a $Z'$ necessarily acquires a Chern-Simons coupling to the EW gauge bosons and these couplings can drive both exotic $Z$ decays into $Z'\gamma$ if the new gauge boson is sufficiently light, as well as $Z'$ decays into EW gauge bosons.While the exotic decay rate of the heavy $Z$ into $Z'\gamma$ is too small to be observed at the LHC, for a light $Z'$, we show the potential of a lepton jet search in association with a photon to probe the rare decay $Z \to Z' \gamma$.
Forward citations
Cited by 2 Pith papers
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A framework for missing-energy searches with anomalous light vectors
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...
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Probing triple-gauge couplings in anomalous gauge theories at hadron and lepton colliders
Anomalous Z'ZZ, Z'Zγ, and Z'γγ couplings from a muonic U(1)' model are beyond HL-LHC reach but potentially discoverable at CLIC and a 100 TeV pp collider.
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