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Maximal Flavour Violation: a Cabibbo mechanism for leptoquarks

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arxiv 1808.00942 v2 pith:AZB4YRQR submitted 2018-08-02 hep-ph hep-ex

Luca Di Luzio , Javier Fuentes-Martin , Admir Greljo , Marco Nardecchia , Sophie Renner This is my paper · ORCID
classification hep-phhep-ex
keywords flavourcurrentsmechanismdirectindirectmodelneutralsearches
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We propose a mechanism that allows for sizeable flavour violation in quark-lepton currents, while suppressing flavour changing neutral currents in quark-quark and lepton-lepton sectors. The mechanism is applied to the recently proposed 4321 renormalizable model, which can accommodate the current experimental anomalies in $B$-meson decays, both in charged and neutral currents, while remaining consistent with all other indirect flavour and electroweak precision measurements and direct searches at high-$p_T$. To support this claim, we present an exhaustive phenomenological survey of this fully calculable UV complete model and highlight the rich complementarity between indirect and direct searches.

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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. Probing Flavour Deconstruction via Primordial Gravitational Waves

    hep-ph 2025-09 conditional novelty 6.0 of 10

    Flavour deconstruction phase transitions can generate detectable gravitational waves, but their spectra typically peak above the millihertz range, making LISA detection possible yet not guaranteed.

  2. With or without U(2)? Probing non-standard flavor and helicity structures in semileptonic B decays

    hep-ph 2019-09 conditional novelty 6.0 of 10

    Under the minimally-broken U(2)_q × U(2)_ℓ flavor symmetry hypothesis, semileptonic B decay amplitudes are controlled by a few parameters, yielding testable correlations such as equal new-physics effects in b→u and b→...

  3. Constraints on scalar leptoquarks from lepton and kaon physics

    hep-ph 2019-08 accept novelty 6.0 of 10

    Scalar leptoquark couplings are constrained by a comprehensive set of upper bounds from tau, muon, electron, and kaon decay data, including standard model interference in rare K to pi l+ l- modes.

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