Leptoquark model to explain the $B$-physics anomalies, $R_K$ and $R_D$

Abstract

We show that a model with a scalar leptoquark of hypercharge $Y=1/6$ which includes the light right-handed neutrinos, can successfully describe both of the $B$-physics anomalies, $R_K^{\exp }<R_K^{\mathrm{SM}}$ and $R_D^{\exp }>R_D^{\mathrm{SM}}$. We discuss the corresponding low energy effective theory and, after using the known experimental data as constraints, we show that the model is viable and that it offers several predictions which can be tested experimentally.

6 pages, 4 figures

References in corpus (6)

• Test of lepton universality using $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Implications of lepton flavor universality violations in B decays
• Two-Loop Electroweak Corrections for the K -> pi nu anti-nu Decays
• Simultaneous Explanation of the $R_K$ and $R(D^{(\ast )})$ Puzzles
• Lepton universality violation and lepton flavor conservation in $B$-meson decays
• Diagnosing lepton-nonuniversality in $b\to s\ell \ell$

Cited by in corpus (67)

• B-physics anomalies: a guide to combined explanations
• 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
• Reading the footprints of the B-meson flavor anomalies
• New Physics effect on $B_c\to J/\psi \tau \bar{\nu }$ in relation to the $R_{D^{(\ast )}}$ anomaly
• Lepton Flavor Non-Universality in B decays from Dynamical Yukawas
• Explaining the $R_K$ and $R_{D^{(\ast )}}$ anomalies with vector leptoquarks
• The role of the $S_3$ GUT leptoquark in flavor universality and collider searches
• Penguin $b\to s{\ell }^{\prime +}{\ell }^{\prime -}$ and $B$-meson anomalies in a gauged $L_{\mu }-L_{\tau }$
• $B$ Flavour Anomalies: 2021 Theoretical Status Report
• 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
• Minimal unified resolution to $R_{K^{(\ast )}}$ and $R(D^{(\ast )})$ anomalies with lepton mixing
• 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
• B-meson charged current anomalies: the post-Moriond status
• On lepton flavour universality in semileptonic $B_c\to {\eta }_c,J/\psi$ decays
• Understanding the first measurement of $\mathcal{B}(B\to K\nu \bar{\nu })$
• GUT Physics in the era of the LHC
• Impact of the $b\to sll$ anomalies on dark matter physics
• Investigation of Effects of New Physics in ${\Lambda }_b\to {\Lambda }_c\tau {\bar{\nu }}_{\tau }$ Decay
• Impact of ${\Lambda }_b\to {\Lambda }_c\tau \nu$ measurement on New Physics in $b\to cl\nu$ transitions
• Measurements of the branching fractions of the semileptonic decays ${\Xi }_c^0\to {\Xi }^{-}{\ell }^{+}{\nu }_{\ell }$ and the asymmetry parameter of ${\Xi }_c^0\to {\Xi }^{-}{\pi }^{+}$
• Towards testing the magnetic moment of the tau at one part per million
• Probing the $R_{K^{(\ast )}}$ Anomaly at a Muon Collider
• Rare semileptonic $B\to K(\pi )l_i^{-}{l}_j^{+}$ decay in vector leptoquark model
• Phenomenology of $b\to c\tau \bar{\nu }$ decays in a scalar leptoquark model
• Effective-field theory analysis of the ${\tau }^{-}\to {\eta }^{(\prime )}{\pi }^{-}{\nu }_{\tau }$ decays
• Explanations for anomalies of muon anomalous magnetic dipole moment, $b\to s\mu \bar{\mu }$ and radiative neutrino masses in a leptoquark model
• First test of Lepton Flavor Universality in the charmed baryon decays ${\Omega }_c^0\to {\Omega }^{-}{\ell }^{+}{\nu }_{\ell }$ using data of the Belle experiment
• $B$ decay anomalies from nonabelian local horizontal symmetry
• A model for the Singlet-Triplet Leptoquarks
• Semileptonic and leptonic $B$ decays, circa 2016
• Remarks on the Standard Model predictions for $R(D)$ and $R(D^{\ast })$
• Light dark matter, rare $B$ decays with missing energy in $L_{\mu }-L_{\tau }$ model with a scalar leptoquark
• Collider Signatures of Coannihilating Dark Matter in Light of the B-Physics Anomalies
• Unified resolution of the $R(D)$ and $R(D^{\ast })$ anomalies and the lepton flavor violating decay $h\to \mu \tau$
• Observation of $D_s^{+}\to {\eta }^{\prime }{\mu }^{+}{\nu }_{\mu }$, Precision Test of Lepton Flavor Universality with $D_s^{+}\to {\eta }^{(\prime )}{\ell }^{+}{\nu }_{\ell }$, and First Measurements of $D_s^{+}\to {\eta }^{(\prime )}{\mu }^{+}{\nu }_{\mu }$ Decay Dynamics
• Marriage between neutrino mass and flavor anomalies
• Muon $(g-2)$ and Flavor Puzzles in the $U(1{)}_X^{}$-gauged Leptoquark Model
• The fate of $V_1$ vector leptoquarks: the impact of future flavour data
• Flavour Anomalies in $b\to s{\ell }^{+}{\ell }^{-}$ Processes - a round table Discussion
• Direct production of SM-singlet scalars at the muon collider
• Decay dynamics of $N\to \ell \pi$ and $N\to \ell \gamma$
• Investigating the effect of $U_1$ vector leptoquark on $b\to u\tau \bar{\nu }$ mediated $B$ decays
• Revisiting the Scalar Leptoquark ($S_1$) Model with the Updated Leptonic Constraints
• The Revival of $U(1{)}_{L_e-L_{\mu }}$: A Natural Solution for $(g-2{)}_{\mu }$ with a Sub-GeV Dark Matter
• Evaluation of investigational paradigms for the discovery of non-canonical astrophysical phenomena
• Prospects for discovering new physics in charm sector through low-energy scattering processes $e^{-}p\to e^{-}({\mu }^{-}){\Lambda }_c$
• Testing Lepton Flavour Universality in ${\rm Y}(4S)$ Decays
• TeV-scale vector leptoquark from Pati-Salam unification with vectorlike families
• Searching and identifying leptoquarks through low-energy polarized scattering processes $e^{-}p\to e^{-}{\Lambda }_c$
• Searching for new physics from SMEFT and leptoquarks at the P2 experiment
• Flavor phenomenology of an extended 2HDM with inverse seesaw mechanism
• Reappraisal of the minimal flavoured $Z^{\prime }$ scenario
• Perturbative unitarity constraints on generic Yukawa interactions
• Lepton polarization asymmetry in $B_{(}s,d{)}^{\ast }$ arrow ${\mu }^{+}{\mu }^{-}$ with new Z' couplings
• Novel Leptoquark Pair Production at LHC
• Flavour Physics from Present to Future Colliders
• Quark and lepton flavor model with leptoquarks in a modular $A_4$ symmetry
• Phenomenological study of a gauged $L_{\mu }-L_{\tau }$ model with a scalar leptoquark
• Model Dependent Analysis of D_((s))^+ arrows η^((')) l^+ ν_l Decays in Beyond Standard Model
• Rare decay $t\to c\gamma \gamma$ via scalar leptoquark doublets
• Leptoquarks in B-meson anomalies: simplified models and HL-LHC discovery prospects
• Vacuum stability in an extended standard model with a leptoquark