B-decay Anomalies in a Composite Leptoquark Model

Abstract

The collection of a few anomalies in semileptonic $B$-decays, especially in $b\to c\tau \bar{\nu }$, invites to speculate about the emergence of some striking new phenomena, perhaps interpretable in terms of a weakly broken $U(2{)}^n$ flavor symmetry and of leptoquark mediators. Here we aim at a partial UV completion of this interpretation by generalizing the minimal composite Higgs model to include a composite vector leptoquark as well.

29 pages, 4 figures, 1 table

References in corpus (14)

• Test of lepton universality using $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• A custodial symmetry for Zbb
• On the B to D* tau nu Sensitivity to New Physics
• Angular Distributions of B -> K ll Decays
• $R_K$ and future $b\to s\ell \ell$ BSM opportunities
• Simultaneous Explanation of the $R_K$ and $R(D^{(\ast )})$ Puzzles
• Explaining Dark Matter and $B$ Decay Anomalies with an $L_{\mu }-L_{\tau }$ Model
• B -> D tau nu Branching Ratios: Opportunity for Lattice QCD and Hadron Colliders
• Scalar leptoquarks and the rare B meson decays
• A GIM Mechanism from Extra Dimensions
• Search for pair production of third-generation scalar leptoquarks and top squarks in proton-proton collisions at sqrt(s) = 8 TeV
• Massive vectors and loop observables: the $g-2$ case
• Search for pair production of third-generation leptoquarks and top squarks in pp collisions at sqrt(s) = 7 TeV
• Gauged Lepton Flavour

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