Neutrino mixing and $R_K$ anomaly in $U(1{)}_X$ models: a bottom-up approach

Abstract

We identify a class of $U(1{)}_X$ models which can explain the $R_K$ anomaly and the neutrino mixing pattern, by using a bottom-up approach. The different $X$-charges of lepton generations account for the lepton universality violation required to explain $R_K$. In addition to the three right-handed neutrinos needed for the Type-I seesaw mechanism, these minimal models only introduce an additional doublet Higgs and a singlet scalar. While the former helps in reproducing the quark mixing structure, the latter gives masses to neutrinos and the new gauge boson $Z^{\prime }$. Our bottom-up approach determines the $X$-charges of all particles using theoretical consistency and experimental constraints. We find the parameter space allowed by the constraints from neutral meson mixing, rare $b\to s$ decays and direct collider searches for $Z^{\prime }$. Such a $Z^{\prime }$ may be observable at the ongoing run of the Large Hadron Collider with a few hundred fb${}^{-1}$ of integrated luminosity.

29 pages, 6 figures, minor typos corrected, one comment and references added, matches with the version published in JHEP

References in corpus (31)

• PYTHIA 6.4 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Test of lepton universality using $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Updated fit to three neutrino mixing: exploring the accelerator-reactor complementarity
• Explaining $h\to {\mu }^{\pm }{\tau }^{\mp }$, $B\to K^{\ast }{\mu }^{+}{\mu }^{-}$ and $B\to K{\mu }^{+}{\mu }^{-}/B\to K{e}^{+}{e}^{-}$ in a two-Higgs-doublet model with gauged $L_{\mu }-L_{\tau }$
• Addressing the LHC flavour anomalies with horizontal gauge symmetries
• Angular Distributions of B -> K ll Decays
• Simultaneous Explanation of the $R_K$ and $R(D^{(\ast )})$ Puzzles
• Lepton Flavor Violation in B Decays?
• Physics at Super B Factory
• Leptoquark model to explain the $B$-physics anomalies, $R_K$ and $R_D$
• Explaining Dark Matter and $B$ Decay Anomalies with an $L_{\mu }-L_{\tau }$ Model
• B-decay Anomalies in a Composite Leptoquark Model
• Hint of Lepton Flavour Non-Universality in $B$ Meson Decays
• Family non-universal Z' models with protected flavor-changing interactions
• Simultaneous Explanation of the $R_K$ and $R_{D^{(\ast )}}$ Puzzles: a Model Analysis
• Lepton universality violation and lepton flavor conservation in $B$-meson decays
• Phenomenology of an $SU(2)\times SU(2)\times U(1)$ model with lepton-flavour non-universality
• Lepton Flavor Non-Universality in B decays from Dynamical Yukawas
• Vanishing Minors in the Neutrino Mass Matrix from Abelian Gauge Symmetries
• Scalar leptoquarks and the rare B meson decays
• Explaining the $R_K$ and $R_{D^{(\ast )}}$ anomalies with vector leptoquarks
• Zero minors of the neutrino mass matrix
• Shedding light on the $b\to s$ anomalies with a dark sector
• Explaining the Lepton Non-universality at the LHCb and CMS from a Unified Framework
• LHCb anomalies from a natural perspective
• Explanation of $B\to K^{(\ast )}{\ell }^{+}{\ell }^{-}$ and muon $g-2$, and implications at the LHC
• SU(5) Unification with TeV-scale Leptoquarks
• Dirac dark matter and $b\to s{\ell }^{+}{\ell }^{-}$ with $\mathrm{U}(1)$ gauge symmetry
• Signature of heavy Majorana neutrinos at a linear collider: Enhanced charged Higgs pair production
• Effects of scalar leptoquark on semileptonic ${\Lambda }_b$ decays

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• A minimal flavored $U(1{)}^{\prime }$ for $B$-meson anomalies
• Reconciling dark matter, $R_{K^{(\ast )}}$ anomalies and $(g-2{)}_{\mu }$ in an $L_{\mu }-L_{\tau }$ scenario
• Direct determination of Wilson coefficients using $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ decays
• Addressing $R_K$ and neutrino mixing in a class of $U(1{)}_X$ models