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Dijet and electroweak limits on a $Z'$ boson coupled to quarks

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arxiv 2112.05392 v2 pith:GRSRISJT submitted 2021-12-10 hep-ph

classification hep-ph
keywords bosonconstraintscoupling-massdijetelectroweakflavor-independentlimitsmasses
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

An insightful way of presenting the LHC limits on dijet resonances is the coupling-mass plot for a $Z'$ boson that has flavor-independent quark interactions. This also illustrates the comparison of low-mass LHC sensitivity with constraints on the flavor-independent $Z'$ boson from electroweak and quarkonium measurements. To derive these constraints, we compute the $Z'$ mixing with the $Z$, the photon, and the $\Upsilon$ meson, emphasizing the logarithmic dependence on the masses of the new electroweak-charged fermions (``anomalons") required to cancel the gauge anomalies. We update the coupling-mass plot, extending it for $Z'$ masses from 5 GeV to 5 TeV.

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  1. Quark-universal $U(1)$ breaking scalar at the LHC

    hep-ph 2025-06 conditional novelty 6.0 of 10

    In a quark-universal U(1)_B model, the scalar φ that breaks the symmetry can be discovered first through its diphoton decay, and its rate can explain the 95 GeV diphoton excess.

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