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A three Higgs doublet model with symmetry-suppressed flavour changing neutral currents
We construct a three-Higgs doublet model with a flavour non-universal U(1) × ℤ 2 symmetry. That symmetry induces suppressed flavour-changing...
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Asymmetry in flavour changing electromagnetic transitions of vector-like quarks
Vector-like quarks have been of interest for a plethora of experimentally motivated reasons and have come under increased investigation recently due...
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Gauge SU(2)f flavour transfers
We introduce the idea of flavour transfer from a non-abelian horizontal SU(2) f flavour gauge group embedded in the Standard Model flavour structure....
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Bs → μ+μ− in a two-Higgs-doublet model with flavour-changing up-type Yukawa couplings
We present a Two-Higgs-Doublet Model in which the structure of the quark Yukawa matrices is governed by three spurions breaking the flavour...
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Minimal flavour deconstruction
We construct two concrete examples of flavour non-universal gauge theories which, after the inclusion of all d ≤ 4 gauge invariant operators, allow...
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Flavour constraints on light spin-1 bosons within a chiral Lagrangian approach
We discuss the construction of the chiral Lagrangian for a light spin-1 boson, here denoted as X , featuring both vector and axial-vector couplings to...
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Non-universal gauge interactions addressing the inescapable link between Higgs and flavour
We systematically explore ultraviolet complete models where flavour hierarchies emerge, via approximate accidental symmetries, from an underlying...
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Deconstructed hypercharge: a natural model of flavour
The flavour puzzle is one of the greatest mysteries in particle physics. A ‘flavour deconstruction’ of the electroweak gauge symmetry, by promoting...
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On the IR/UV flavour connection in non-universal axion models
Non-universal axion models, with the Peccei-Quinn (PQ) symmetry acting on Standard Model (SM) fermions in a generation-dependent way, are typically...
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Search for flavour-changing neutral tqH interactions with H → γγ in pp collisions at \( \sqrt{s} \) = 13 TeV using the ATLAS detector
A search for flavour-changing neutral interactions involving the top quark, the Higgs boson and an up-type quark q ( q = c, u ) is presented. The...
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Electroweak-flavour and quark-lepton unification: a family non-universal path
We present a family-non-universal extension of the Standard Model where the first two families feature both quark-lepton and electroweak-flavour...
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Neutral Current B-Decay Anomalies
We discuss the implications of \(b \rightarrow s \ell ^+\ell ^-\)...
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Search for flavour-changing neutral current interactions of the top quark and the Higgs boson in events with a pair of τ-leptons in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
A search for flavour-changing neutral current (FCNC) tqH interactions involving a top quark, another up-type quark ( q = u, c ), and a Standard Model...
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Lepton-flavoured scalar dark matter in Dark Minimal Flavour Violation
We study a simplified model of lepton-flavoured complex scalar dark matter set up in the Dark Minimal Flavour Violation framework. In this model the...
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Electroweak flavour unification
We propose that the electroweak and flavour quantum numbers of the Standard Model (SM) could be unified at high energies in an SU(4) × Sp(6) L × Sp(6) R ...
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Tri-hypercharge: a separate gauged weak hypercharge for each fermion family as the origin of flavour
We propose a tri-hypercharge (TH) extension of the Standard Model (SM) in which a separate gauged weak hypercharge is associated with each fermion...
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Effective portals to heavy neutral leptons
The existence of right-handed neutrinos, or heavy neutral leptons (HNLs), is strongly motivated by the observation of neutrino masses and mixing. The...
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Heavy flavour physics and CP violation at LHCb: A ten-year review
Heavy flavour physics provides excellent opportunities to indirectly search for new physics at very high energy scales and to study hadron properties...
