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

Cited by in corpus (23)

• B-physics anomalies: a guide to combined explanations
• Search for lepton-universality violation in $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Gauge leptoquark as the origin of B-physics anomalies
• The lifetime of the $B_c^{-}$ meson and the anomalies in $B\to D^{(\ast )}\tau \nu$
• Baryon Number and Lepton Universality Violation in Leptoquark and Diquark Models
• What is the scale of new physics behind the $B$-flavour anomalies?
• Vector boson fusion at multi-TeV muon colliders
• Probing new physics in ${\bar{B}}^0\to D^{(\ast )}{\tau }^{-}{\bar{\nu }}_{\tau }$ using the longitudinal, transverse, and normal polarization components of the tau lepton
• $B$ decay anomalies and dark matter from vectorlike confinement
• Combined explanations of $(g-2{)}_{\mu }$, $R_{D^{(\ast )}}$, $R_{K^{(\ast )}}$ anomalies in a two-loop radiative neutrino mass model
• Neutrino mixing and $R_K$ anomaly in $U(1{)}_X$ models: a bottom-up approach
• Probing Lepton Flavour Universality with $K\to \pi \nu \bar{\nu }$ decays
• SU(5) Unification with TeV-scale Leptoquarks
• Investigation of Effects of New Physics in ${\Lambda }_b\to {\Lambda }_c\tau {\bar{\nu }}_{\tau }$ Decay
• Reconciling dark matter, $R_{K^{(\ast )}}$ anomalies and $(g-2{)}_{\mu }$ in an $L_{\mu }-L_{\tau }$ scenario
• Scalar Leptoquarks, Baryon Number Violation and Pati-Salam Symmetry
• Phenomenology of flavorful composite vector bosons in light of $B$ anomalies
• $B$ decay anomalies from nonabelian local horizontal symmetry
• Vector Leptoquarks Beyond Tree Level II: $\mathcal{O}({\alpha }_s)$ Corrections and Radial Modes
• Probing new physics in semileptonic ${\Sigma }_b$ and ${\Omega }_b$ decays
• Quark masses, CKM angles and Lepton Flavour Universality violation
• Searching for new physics from SMEFT and leptoquarks at the P2 experiment
• Lepton Universality Violation by Kaluza-Klein Neutrinos in $b\to sll$ transition