Family non-universal Z' models with protected flavor-changing interactions

Abstract

We define a new class of $Z^{\prime }$ models with neutral flavor-changing interactions at tree level in the down-quark sector. They are related in an exact way to elements of the quark mixing matrix due to an underlying flavored $U(1{)}^{\prime }$ gauge symmetry, rendering these models particularly predictive. The same symmetry implies lepton-flavor non-universal couplings, fully determined by the gauge structure of the model. Our models allow to address presently observed deviations from the SM and specific correlations among the new physics contributions to the Wilson coefficients $C_{9,10}^{(\prime )\ell }$ can be tested in $b\to s{\ell }^{+}{\ell }^{-}$ transitions. We furthermore predict lepton-universality violations in $Z^{\prime }$ decays, testable at the LHC.

15 pages, 3 tables, 2 figures. v2: discussion improved, version accepted in PRD

References in corpus (26)

• Test of lepton universality using $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Neutrino Trident Production: A Powerful Probe of New Physics with Neutrino Beams
• 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 $L_{\mu }-L_{\tau }$
• Search for high-mass dilepton resonances in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector
• Addressing the LHC flavour anomalies with horizontal gauge symmetries
• 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
• Lepton Flavor Violation in B Decays?
• $SU(2)\times U(1)$ gauge invariance and the shape of new physics in rare $B$ decays
• Hint of Lepton Flavour Non-Universality in $B$ Meson Decays
• Search for physics beyond the standard model in dilepton mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
• Z' physics with early LHC data
• Diagnosing lepton-nonuniversality in $b\to s\ell \ell$
• Constraints on two-lepton, two quark operators
• Global fits to b -> s ll data and signs for lepton non-universality
• Parity and Time-Reversal Violation in Atomic Systems
• Search for narrow resonances in dilepton mass spectra in pp collisions at sqrt(s) = 7 TeV
• The Anatomy of Z' and Z with Flavour Changing Neutral Currents in the Flavour Precision Era
• Neutral $B$ meson mixings and $B$ meson decay constants with static heavy and domain-wall light quarks
• Search for contact interactions and large extra dimensions in the dilepton channel using proton-proton collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• An invisible axion model with controlled FCNCs at tree level
• Identification of Extra Neutral Gauge Bosons at the LHC Using b- and t-Quarks
• Unravelling an Extra Neutral Gauge Boson at the LHC using Third Generation Fermions
• A class of invisible axion models with FCNCs at tree level
• Dilepton Signatures of Family Non-Universal U(1)'

Cited by in corpus (15)

• Search for lepton-universality violation in $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Explaining Dark Matter and $B$ Decay Anomalies with an $L_{\mu }-L_{\tau }$ Model
• Lepton Flavor Non-Universality in B decays from Dynamical Yukawas
• The role of the $S_3$ GUT leptoquark in flavor universality and collider searches
• $B$ decay anomalies and dark matter from vectorlike confinement
• Neutrino mixing and $R_K$ anomaly in $U(1{)}_X$ models: a bottom-up approach
• Dirac dark matter and $b\to s{\ell }^{+}{\ell }^{-}$ with $\mathrm{U}(1)$ gauge symmetry
• $B$ decay anomalies from nonabelian local horizontal symmetry
• Direct determination of Wilson coefficients using $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ decays
• Search for the $t\to ch$ decay at hadron colliders
• Flavour Anomalies in $b\to s{\ell }^{+}{\ell }^{-}$ Processes - a round table Discussion
• Dark Matter phenomenology : from simplified WIMP models to refined alternative solutions
• U(1)' coupling constant at low energies from heterotic orbifolds
• Theory status and implications of $R_K^{(\ast )}$
• A flavor-safe composite explanation of $R_K$