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Addressing the B-physics anomalies in a fundamental Composite Higgs Model
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abstract
I present a model addressing coherently the naturalness problem of the electroweak scale and the observed pattern of deviations from the Standard Model in semi-leptonic decays of $B$ mesons. The Higgs and the two scalar leptoquarks responsible for the $B$-physics anomalies, $S_1 = ({\bf \bar 3}, {\bf 1}, 1/3)$ and $S_3 = ({\bf \bar 3}, {\bf 3}, 1/3)$, arise as pseudo Nambu-Goldstone bosons of a new strongly coupled sector at the multi-TeV scale. I focus on an explicit realization of such a dynamics in terms of a new strongly coupled gauge interaction and extra vectorlike fermions charged under it. The model presents a very rich phenomenology, ranging from flavour observables, Higgs and electroweak precision measurements, and direct searches of new states at the LHC.
Forward citations
Cited by 3 Pith papers
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A common origin of the Higgs boson and the flavor hierarchies
A unified TeV-scale model produces the Higgs as a pseudo-Goldstone boson from the same gauge deconstruction that suppresses light-family Yukawa couplings and CKM mixing while leaving PMNS mixing anarchic.
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The effects of a scalar singlet Leptoquark at the $Z$ factory
A scalar singlet leptoquark that explains B-meson anomalies produces a ~0.7% decrease in Z→τ+τ−, which future Z-factory measurements could detect, while Z→μ+μ− is essentially unchanged.
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Lepton Flavor Universality tests through angular observables of $\overline{B}\to D^{(\ast)}\ell\overline{\nu}$ decay modes
Angular observables in B→D(*)ℓν decays can distinguish Lorentz structures of new physics contributions fitted to measured R(D(*)) ratios, even when those ratios agree with the Standard Model.
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