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The Price of Tiny Kinetic Mixing

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arxiv 1909.00696 v2 pith:SF4H6LJS submitted 2019-09-02 hep-ph

Tony Gherghetta , Joern Kersten , Keith Olive , Maxim Pospelov This is my paper · ORCID
classification hep-ph
keywords kineticmixingconsidergaugeapproachbottom-upepsilontop-down
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We consider both "bottom-up" and "top-down" approaches to the origin of gauge kinetic mixing. We focus on the possibilities for obtaining kinetic mixings $\epsilon$ which are consistent with experimental constraints and are much smaller than the naive estimates ($\epsilon \sim 10^{-2} - 10^{-1}$) at the one-loop level. In the bottom-up approach, we consider the possible suppression from multi-loop processes. Indeed we argue that kinetic mixing through gravity alone, requires at least six loops and could be as large as $\sim 10^{-13}$. In the top-down approach we consider embedding the Standard Model and a $U(1)_X$ in a single grand-unified gauge group as well as the mixing between Abelian and non-Abelian gauge sectors.

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Cited by 4 Pith papers

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

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  3. Towards UV-Models of Kinetic Mixing and Portal Matter VII: A Light Dark Photon in the $3_c3_L1_A1_B$ Model

    hep-ph 2024-12 conditional novelty 6.0 of 10

    In the 3c3L1A1B model, a single larger gauge force unifies part of the weak force with a dark force, producing a light dark photon, multi-TeV portal matter, and new heavy gauge bosons with testable signatures.

  4. Portal Matter and Scotogenic-like Dirac Neutrino Masses

    hep-ph 2026-07 conditional novelty 5.0 of 10

    One-loop diagrams from dark-charged scalars and fermions in an E6-like portal matter model generate Dirac neutrino masses near 0.05 eV.

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