The fate of $V_1$ vector leptoquarks: the impact of future flavour data

Abstract

Motivated by the recent experimental progress on the $B$-meson decay anomalies (in particular the angular observables in $B\to K^{\ast }\mu \mu$), we rely on a simplified-model approach to study the prospects of vector leptoquarks in what concerns numerous flavour observables, identifying several promising decay modes which would allow to (indirectly) probe such an extension. Our findings suggest that the confirmation of the $B$-meson decay anomalies, in parallel with positive signals (at Belle II or LHCb) for $\tau \to \varphi \mu$, $B_{(s)}$-meson decays to ${\tau }^{+}{\tau }^{-}$ and ${\tau }^{+}{\mu }^{-}$ (${\tau }^{+}{e}^{-}$) final states, as well as an observation of certain charged lepton flavour violation decays (at COMET or Mu2e), would contribute to strengthen the case for this scenario. We also illustrate how the evolution of the experimental determination of $R_{D^{(\ast )}}$ could be instrumental in falsifying an explanation of the anomalous $B$-meson decay data via a vector $V_1$ leptoquark.

arXiv comment42 pages, 7 figures, v3: takes into account updated $b\to s\ell \ell$ measurements, several improvements in the numerical analysis; conclusions unchanged, matches version published in EPJC

References in corpus (188)

• emcee: The MCMC Hammer
• Weak Decays Beyond Leading Logarithms
• Muon Decay and Physics Beyond the Standard Model
• Physics of leptoquarks in precision experiments and at particle colliders
• Symmetries and Asymmetries of B -> K* mu+ mu- Decays in the Standard Model and Beyond
• Systematic approach to exclusive B ->V l^+l^-, V gamma decays
• $B\to V{\ell }^{+}{\ell }^{-}$ in the Standard Model from Light-Cone Sum Rules
• B_{s,d} -> l+ l- in the Standard Model with Reduced Theoretical Uncertainty
• More Model-Independent Analysis of b->s Processes
• B-physics anomalies: a guide to combined explanations
• One Leptoquark to Rule Them All: A Minimal Explanation for $R_{D^{(\ast )}}$, $R_K$ and $(g-2{)}_{\mu }$
• Search for Lepton Flavor Violating Tau Decays into Three Leptons with 719 Million Produced Tau+Tau- Pairs
• On the Standard Model predictions for $R_K$ and $R_{K^{\ast }}$
• Charm-loop effect in $B\to K^{(\ast )}{\ell }^{+}{\ell }^{-}$ and $B\to K^{\ast }\gamma$
• 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 $L_{\mu }-L_{\tau }$
• Photonic penguins at two loops and m_t-dependence of BR[ B -> X_s l^+ l^-]
• Detailed calculation of lepton flavor violating muon-electron conversion rate for various nuclei
• Dressing L_mu - L_tau in Color
• Dispersive Bounds on the Shape of B -> D^(*) l nu Form Factors
• Test of lepton universality in beauty-quark decays
• Global analysis of $b\to s\ell \ell$ anomalies
• Patterns of New Physics in $b\to s{\ell }^{+}{\ell }^{-}$ transitions in the light of recent data
• Addressing the LHC flavour anomalies with horizontal gauge symmetries
• Angular Distributions of B -> K ll Decays
• Simultaneous Explanation of $R(D^{(\ast )})$ and $b\to s{\mu }^{+}{\mu }^{-}$: The Last Scalar Leptoquarks Standing
• Vector leptoquark resolution of $R_K$ and $R_{D^{(\ast )}}$ puzzles
• A three-site gauge model for flavor hierarchies and flavor anomalies
• Weak Radiative Decays of the B Meson and Bounds on $M_{H^{\pm }}$ in the Two-Higgs-Doublet Model
• $R_K$ and future $b\to s\ell \ell$ BSM opportunities
• Optimizing the basis of B->K*ll observables in the full kinematic range
• New physics in $b\to s$ transitions after LHC run 1
• Simultaneous Explanation of the $R_K$ and $R(D^{(\ast )})$ Puzzles
• Lepton Flavor Violation in B Decays?
• $B$ Meson Anomalies in a Pati-Salam Model within the Randall-Sundrum Background
• Interpreting Hints for Lepton Flavor Universality Violation
• $K^{+}\to {\pi }^{+}\nu \bar{\nu }$ and $K_L\to {\pi }^0\nu \bar{\nu }$ in the Standard Model: Status and Perspectives
• Flavor models for $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$
• Implications from clean observables for the binned analysis of B -> K*ll at large recoil
• Closing the window on single leptoquark solutions to the $B$-physics anomalies
• General formulae for f1 --> f2 gamma
• A model of vector leptoquarks in view of the $B$-physics anomalies
• B-decay discrepancies after Moriond 2019
• Revisiting $B\to D\ell \nu$
• Baryon Number and Lepton Universality Violation in Leptoquark and Diquark Models
• New physics in the weak interaction of $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$
• Towards the discovery of new physics with lepton-universality ratios of $b\to s\ell \ell$ decays
• $R(D^{\ast })$, $|V_{cb}|$, and the Heavy Quark Symmetry relations between form factors
• Improved Model-Independent Analysis of Semileptonic and Radiative Rare B Decays
• Leptoquark model to explain the $B$-physics anomalies, $R_K$ and $R_D$
• Wilson: a Python package for the running and matching of Wilson coefficients above and below the electroweak scale
• On B -> V l l at small dilepton invariant mass, power corrections, and new physics
• Emerging patterns of New Physics with and without Lepton Flavour Universal contributions
• Importance of Loop Effects in Explaining the Accumulated Evidence for New Physics in B Decays with a Vector Leptoquark
• On the impact of power corrections in the prediction of B->K*mu+mu- observables
• Lepton-flavour violating $B$ decays in generic $Z^{\prime }$ models
• Scalar leptoquarks from GUT to accommodate the $B$-physics anomalies
• $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decays at large recoil in the Standard Model: a theoretical reappraisal
• Complete Anatomy of B -> K*ll and its angular distribution
• Third Family Quark-Lepton Unification at the TeV Scale
• B-decay Anomalies in a Composite Leptoquark Model
• $B\to K{\ell }^{+}{\ell }^{-}$ decay at large hadronic recoil
• Hint of Lepton Flavour Non-Universality in $B$ Meson Decays
• Extraction of $|V_{cb}|$ from $B\to D^{(\ast )}\ell {\nu }_{\ell }$ and the Standard Model predictions of $R(D^{(\ast )})$
• Theory of B -> K(*)l+l- decays at high q^2: OPE and quark-hadron duality
• Family non-universal Z' models with protected flavor-changing interactions
• Reassessing the discovery potential of the $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decays in the large-recoil region: SM challenges and BSM opportunities
• $R_{D^{(\ast )}}$ anomaly: A possible hint for natural supersymmetry with $R$-parity violation
• New Physics in $b\to s{\mu }^{+}{\mu }^{-}$ after the Measurement of $R_{K^{\ast }}$
• The Benefits of B ---> K* l+ l- Decays at Low Recoil
• Maximal Flavour Violation: a Cabibbo mechanism for leptoquarks
• Lepton universality violation and lepton flavor conservation in $B$-meson decays
• Status of the $B\to K^{\ast }{\mu }^{+}{\mu }^{-}$ anomaly after Moriond 2017
• Reading the footprints of the B-meson flavor anomalies
• Reconsidering the One Leptoquark solution: flavor anomalies and neutrino mass
• Long-distance effects in $B\to K^{\ast }\ell \ell$ from Analyticity
• A Global Likelihood for Precision Constraints and Flavour Anomalies
• Lepton Flavor Violation in Exclusive $b\to s$ Decays
• New Physics in $b\to s{\ell }^{+}{\ell }^{-}$ confronts new data on Lepton Universality
• $B\to K{l}^{+}{l}^{-}$ decay form factors from three-flavor lattice QCD
• Lepton Flavor Non-Universality in B decays from Dynamical Yukawas
• Revisiting the vector leptoquark explanation of the B-physics anomalies
• Searching for New Physics with $b\to s{\tau }^{+}{\tau }^{-}$ processes
• Scalar leptoquarks and the rare B meson decays
• Continuing search for new physics in $b\to s\mu \mu$ decays: two operators at a time
• Towards a unified explanation of $R_{D^{(\ast )}}$, $R_K$ and $(g-2{)}_{\mu }$ anomalies in a left-right model with leptoquarks
• The Decay B --> K l^+ l^- at Low Hadronic Recoil and Model-Independent Delta B = 1 Constraints
• Left-Right SU(4) Vector Leptoquark Model for Flavor Anomalies
• The $B$ Anomalies and New Physics in $b\to s{e}^{+}{e}^{-}$
• Constraints on two-lepton, two quark operators
• Mu2e Technical Design Report
• Update on the b->s anomalies
• Combined Explanations of the $b\to s{\mu }^{+}{\mu }^{-}$ and $b\to c{\tau }^{-}\bar{\nu }$ Anomalies: a General Model Analysis
• A leptoquark model to accommodate $R_K^{\exp }<R_K^{\mathrm{SM}}$ and $R_{K^{\ast }}^{\exp }<R_{K^{\ast }}^{\mathrm{SM}}$
• Low-energy signatures of the ${\mathrm{PS}}^3$ model: from $B$-physics anomalies to LFV
• High-pT Signatures in Vector-Leptoquark Models
• Electroweak Corrections to $B_{s,d}\to {\ell }^{+}{\ell }^{-}$
• Tau Polarization Asymmetry in $B\to X_s{\tau }^{+}{\tau }^{-}$
• On the Importance of Electroweak Corrections for B Anomalies
• Lepton flavor universality violation without new sources of quark flavor violation
• Explaining the $R_K$ and $R_{D^{(\ast )}}$ anomalies with vector leptoquarks
• $\mu \to e\gamma$ and $\mu \to 3e$ processes with polarized muons and supersymmetric grand unified theories
• Angular analysis of $B^0\to K^{\ast }(892{)}^0{\ell }^{+}{\ell }^{-}$
• Phenomenology of semileptonic B-meson decays with form factors from lattice QCD
• Constraints on scalar leptoquarks from lepton and kaon physics
• The role of the $S_3$ GUT leptoquark in flavor universality and collider searches
• Generic Loop Effects of New Scalars and Fermions in $b\to s{\ell }^{+}{\ell }^{-}$, $(g-2{)}_{\mu }$ and a Vector-like $4^{\mathrm{th}}$ Generation
• Three-loop QCD corrections to B_s -> mu^+ mu^-
• Search for the Lepton Flavour Violating Decay ${\mu }^{+}\to e^{+}\gamma$ with the Full Dataset of the MEG Experiment
• Quark-Lepton Unification and Rare Meson Decays
• New physics solutions for $R_D$ and $R_{D^{\ast }}$
• Hadronic uncertainties in $B\to K^{\ast }{\mu }^{+}{\mu }^{-}$: a state-of-the-art analysis
• Penguin $b\to s{\ell }^{\prime +}{\ell }^{\prime -}$ and $B$-meson anomalies in a gauged $L_{\mu }-L_{\tau }$
• Third-family quark-lepton unification with a fundamental composite Higgs
• New Physics in the Visible Final States of $B\to D^{(\ast )}\tau \nu$
• Anomalies in Bottom from new physics in Top
• $b\to s{\ell }^{+}{\ell }^{-}$ Transitions in Two-Higgs-Doublet Models
• Bayesian fit analysis to full distribution data of $\bar{B}\to D^{(\ast )}\ell \bar{\nu }$: $|V_{cb}|$ determination and New Physics constraints
• Addressing $R_{D^{(\ast )}}$, $R_{K^{(\ast )}}$, muon $g-2$ and ANITA anomalies in a minimal $R$-parity violating supersymmetric framework
• $R_{D^{(\ast )}}$ motivated ${\mathcal{S}}_1$ leptoquark scenarios: Impact of interference on the exclusion limits from LHC data
• Shedding light on the $b\to s$ anomalies with a dark sector
• $D^{\ast }$ polarization vs. $R_{D^{(\ast )}}$ anomalies in the leptoquark models
• Implications for New Physics in $b\to s\mu \mu$ transitions after recent measurements by Belle and LHCb
• Consequences of R-Parity violating interactions for anomalies in $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$ and $b\to s{\mu }^{+}{\mu }^{-}$
• $B$ decay anomalies and dark matter from vectorlike confinement
• Minimal unified resolution to $R_{K^{(\ast )}}$ and $R(D^{(\ast )})$ anomalies with lepton mixing
• Leptoquarks meet ${\epsilon }^{\prime }/\epsilon$ and rare Kaon processes
• 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
• Measurement of $\mathcal{R}(D)$ and $\mathcal{R}(D^{\ast })$ with a semileptonic tagging method
• A near-minimal leptoquark model for reconciling flavour anomalies and generating radiative neutrino masses
• $R_2$ as a single leptoquark solution to $R_{D^{(\ast )}}$ and $R_{K^{(\ast )}}$
• Vector Leptoquarks Beyond Tree Level
• Addressing the ${\mathbf{R}}_{D^{(\ast )}}$ anomalies with an ${\mathbf{S}}_1$ leptoquark from $\mathbf{SO}(10)$ grand unification
• Muon-electron conversion in strange quark sea
• QCD Improved Matching for Semi-Leptonic B Decays with Leptoquarks
• Flavor anomalies and dark matter in SUSY with an extra U(1)
• Probing Lepton Flavour Universality with $K\to \pi \nu \bar{\nu }$ decays
• $b\to c\tau {\nu }_{\tau }$ Decays: A Catalogue to Compare, Constrain, and Correlate New Physics Effects
• Constraints on the charged scalar effects using the forward-backward asymmetry on $B\to D^{(\ast )}\tau \overline{{\nu }_{\tau }}$
• Two Higgs Doublet Models and $b\to s$ exclusive decays
• B-meson charged current anomalies: the post-Moriond status
• K^+ -> pi^+ nu nu-bar and K_L -> pi^0 nu nu-bar Decays in the General MSSM
• An empirical model of the long-distance contributions to ${\bar{B}}^0\to {\bar{K}}^{\ast 0}{\mu }^{+}{\mu }^{-}$ transitions
• Revisiting R-parity violating interactions as an explanation of the B-physics anomalies
• Vector Leptoquarks Beyond Tree Level III: Vector-like Fermions and Flavor-Changing Transitions
• Unified explanation of flavor anomalies, radiative neutrino mass and ANITA anomalous events in a vector leptoquark model
• Are we overlooking Lepton Flavour Universal New Physics in $b\to s\ell \ell$ ?
• Searching for New Physics in Rare $B\to \tau$ Decays
• A Common Origin of Neutrino Masses and $R_{D^{(\ast )}}$, $R_{K^{(\ast )}}$ Anomalies
• SU(5) Unification with TeV-scale Leptoquarks
• Charged current $b\to c\tau {\bar{\nu }}_{\tau }$ anomalies in a general $W^{\prime }$ boson scenario
• Naturalising the Third Family Hypercharge Model for Neutral Current $B-$Anomalies
• Unified SU(4) theory for the $R_{D^{(\ast )}}$ and $R_{K^{(\ast )}}$ anomalies
• $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$ excesses in ALRSM constrained from $B$, $D$ decays and $D^0-{\bar{D}}^0$ mixing
• Mass limits for scalar and gauge leptoquarks from $K_L^0\to e^{\mp }{\mu }^{\pm },B^0\to e^{\mp }{\tau }^{\pm }$ decays
• Lepton polarization asymmetries in rare semi-tauonic $b\to s$ exclusive decays at FCC-$ee$
• Scrutinizing $R$-parity violating interactions in light of $R_{K^{(\ast )}}$ data
• A chiral SU(4) explanation of the $b\to s$ anomalies
• Model independent constraints on leptoquarks from MU and TAU lepton rare processes
• Precise determination of the CKM matrix element $\left|V_{cb}\right|$ with ${\bar{B}}^0\to D^{\ast +}{\ell }^{-}{\bar{\nu }}_{\ell }$ decays with hadronic tagging at Belle
• Reconciling $B$-decay anomalies with neutrino masses, dark matter and constraints from flavour violation
• Reconciling dark matter, $R_{K^{(\ast )}}$ anomalies and $(g-2{)}_{\mu }$ in an $L_{\mu }-L_{\tau }$ scenario
• Vector leptoquark mass limits and branching ratios of $K_L^0,B^0,B_s\to l_i^{+}{l}_j^{-}$ decays with account of fermion mixing in leptoquark currents
• Phenomenology of $b\to c\tau \bar{\nu }$ decays in a scalar leptoquark model
• A nonunitary interpretation for a single vector leptoquark combined explanation to the $B$-decay anomalies
• Exhaustive Model Selection in $b\to s\ell \ell$ Decays: Pitting Cross-Validation against AIC${}_c$
• B anomalies and dark matter: a complex connection
• B-physics anomalies: The bridge between R-parity violating Supersymmetry and flavoured Dark Matter
• Lepton non-universality in $B$ decays and fermion mass structure
• Revisiting the $B$-physics anomalies in $R$-parity violating MSSM
• Contributions to $b\to s\ell \ell$ Anomalies from $R$-Parity Violating Interactions
• The Dark Side of 4321
• $R_{K^{(\ast )}}$ with leptoquarks and the origin of Yukawa couplings
• The third type of fermion mixing in the lepton and quark interactions with leptoquarks
• A new relation between the zero of $A_{FB}$ in $B^0\to K^{\ast }{\mu }^{+}{\mu }^{-}$ and the anomaly in $P_5^{\prime }$
• Dark matter for $b\to s{\mu }^{+}{\mu }^{-}$ anomaly in a gauged $U(1{)}_X$ model
• Clues for flavor from rare lepton and quark decays
• A vector leptoquark for the B-physics anomalies from a composite GUT
• Vector Leptoquarks Beyond Tree Level II: $\mathcal{O}({\alpha }_s)$ Corrections and Radial Modes
• $R_{K^{(\ast )}}$ and $R(D^{(\ast )})$ anomalies resolved with lepton mixing
• Impact of vector leptoquark on $\bar{B}\to {\bar{K}}^{\ast }{l}^{+}{l}^{-}$ anomalies
• Origin of Yukawa couplings for Higgs and leptoquarks
• An Overview of the COMET Experiment and its Recent Progress
• Updates on SM predictions of $|V_{cb}|$ and $R(D^{\ast })$ in $B\to D^{\ast }\ell {\nu }_{\ell }$ decays
• Study of Dynamics of $D^0\to K^{-}{e}^{+}{\nu }_e$ and $D^0\to {\pi }^{-}{e}^{+}{\nu }_e$ Decays
• Chiral gauge leptoquark mass limits and branching ratios of $K_L^0,B^0,B_s\to l_i^{+}{l}_j^{-}$ decays with account of the general fermion mixing in leptoquark currents
• An in-depth analysis of $b\to c(s)$ semileptonic observables with possible $\mu -\tau$ mixing
• R-Parity Violating Supersymmetry and the 125 GeV Higgs signals

Cited by in corpus (5)

• Marriage between neutrino mass and flavor anomalies
• LFV Higgs and $Z$-boson decays: leptonic CPV phases and CP asymmetries
• Search for lepton-flavor-violating $\tau$ decays into a lepton and a vector meson using the full Belle data sample
• Vector leptoquark contributions to lepton dipole moments
• Singlet vector leptoquark model facing recent LHCb and BABAR measurements