Global analysis and LHC study of a vector-like extension of the Standard Model with extra scalars

Abstract

We perform a global analysis of a vector-like extension of the Standard Model, which also features additional doublet and singlet scalars. The usual Yukawa interactions are forbidden in this setup by an extra U(1) global symmetry and the masses of the second and third family quarks and leptons are generated via the mixing with the vector-like sector. We identify three best-fit benchmark scenarios which satisfy the constraints imposed by the stability of the scalar potential, the perturbativity of the coupling constants, the measurement of the muon anomalous magnetic moment and the non-observation of the flavor violating tau decays. We show that dominant contributions to the muon $(g-2)$ originate in this model from the charged Higgs/neutral lepton one-loop diagrams, thus correcting an inaccurate statement than can be found in the literature. We also perform a detailed LHC analysis of the benchmark scenarios. We investigate the experimental constraints stemming from direct searches for vector-like quarks, vector-like leptons and exotic scalars. While we show that the model is not currently tested by any collider experiment, we point out that decays of a heavy Higgs boson into two tau leptons may offer a smoking gun signature for the model verification in upcoming runs at the LHC.

arXiv comment42 pages, 12 tables, 9 figures

References in corpus (85)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
• The anomalous magnetic moment of the muon in the Standard Model
• Bulk Fields and Supersymmetry in a Slice of AdS
• SPheno, a program for calculating supersymmetric spectra, SUSY particle decays and SUSY particle production at e+ e- colliders
• SARAH 4: A tool for (not only SUSY) model builders
• SPheno 3.1: extensions including flavour, CP-phases and models beyond the MSSM
• Leading hadronic contribution to the muon magnetic moment from lattice QCD
• Reevaluation of the Hadronic Contributions to the Muon g-2 and to alpha(MZ)
• Hierarchies without Symmetries from Extra Dimensions
• The muon $g-2$ and $\alpha (M_Z^2)$: a new data-based analysis
• Complete Tenth-Order QED Contribution to the Muon g-2
• Refinements in electroweak contributions to the muon anomalous magnetic moment
• Reevaluation of the hadronic vacuum polarisation contributions to the Standard Model predictions of the muon g-2 and alpha(mZ) using newest hadronic cross-section data
• Hadronic light-by-light scattering contribution to the muon anomalous magnetic moment revisited
• The $g-2$ of charged leptons, $\alpha (M_Z^2)$ and the hyperfine splitting of muonium
• The Belle II Physics Book
• Hadronic contribution to the muon anomalous magnetic moment to next-to-next-to-leading order
• Two-pion contribution to hadronic vacuum polarization
• A new evaluation of the hadronic vacuum polarisation contributions to the muon anomalous magnetic moment and to $\mathbf{\alpha }({\mathbf{m}}_{\mathbf{Z}}^2)$
• The electroweak contributions to (g-2)_μ after the Higgs boson mass measurement
• Search for Lepton Flavor Violating Tau Decays into Three Leptons with 719 Million Produced Tau+Tau- Pairs
• Remarks on higher-order hadronic corrections to the muon g-2
• Dispersion relation for hadronic light-by-light scattering: two-pion contributions
• The hadronic light-by-light scattering contribution to the muon anomalous magnetic moment from lattice QCD
• Three-pion contribution to hadronic vacuum polarization
• Dispersion relation for hadronic light-by-light scattering: pion pole
• Fermion Masses, Mixings and Proton Decay in a Randall-Sundrum Model
• Pseudoscalar-pole contribution to the $(g_{\mu }-2)$: a rational approach
• Short-distance constraints for the HLbL contribution to the muon anomalous magnetic moment
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.20 ppm
• Lattice calculation of the pion transition form factor with $N_f=2+1$ Wilson quarks
• Calculation of the hadronic vacuum polarization contribution to the muon anomalous magnetic moment
• Confronting lepton flavor universality violation in B decays with high-$p_T$ tau lepton searches at LHC
• Longitudinal short-distance constraints for the hadronic light-by-light contribution to $(g-2{)}_{\mu }$ with large-$N_c$ Regge models
• Exploring new models in all detail with SARAH
• New physics explanations of $a_{\mu }$ in light of the FNAL muon $g-2$ measurement
• Search for heavy Higgs bosons decaying into two tau leptons with the ATLAS detector using $pp$ collisions at $\sqrt{s}=13$ TeV
• Hadronic vacuum polarization contribution to the anomalous magnetic moments of leptons from first principles
• HiggsTools: BSM scalar phenomenology with new versions of HiggsBounds and HiggsSignals
• Vevacious: A Tool For Finding The Global Minima Of One-Loop Effective Potentials With Many Scalars
• Search for additional neutral MSSM Higgs bosons in the $\tau \tau$ final state in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• The leading hadronic contribution to $(g-2{)}_{\mu }$ from lattice QCD with $N_{\mathrm{f}}=2+1$ flavours of O($a$) improved Wilson quarks
• The N2HDM under Theoretical and Experimental Scrutiny
• Consistency of hadronic vacuum polarization between lattice QCD and the R-ratio
• Hadronic-vacuum-polarization contribution to the muon's anomalous magnetic moment from four-flavor lattice QCD
• Electromagnetic and strong isospin-breaking corrections to the muon $g-2$ from Lattice QCD+QED
• Global Fit to Modified Neutrino Couplings and the Cabibbo-Angle Anomaly
• Search for charged Higgs bosons decaying into a top quark and a bottom quark at $\sqrt{s}$=13 TeV with the ATLAS detector
• Beta decays as sensitive probes of lepton flavor universality
• Scalar sector of Two-Higgs-Doublet models: A mini-review
• Constraints on scalar leptoquarks from lepton and kaon physics
• Global Electroweak Fit and Vector-Like Leptons in Light of the Cabibbo Angle Anomaly
• Hadronic vacuum polarization contribution to the muon $g-2$ with 2+1 flavor lattice QCD on a larger than (10 fm${)}^4$ lattice at the physical point
• Expectations for the muon g-2 in simplified models with dark matter
• Search for vector-like leptons in multilepton final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Search for heavy Higgs bosons decaying to a top quark pair in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for lepton-flavor-violating tau-lepton decays to $\ell \gamma$ at Belle
• On the Statistical Treatment of the Cabibbo Angle Anomaly
• Flavor anomalies and dark matter in SUSY with an extra U(1)
• The muon anomalous magnetic moment with staggered fermions: is the lattice spacing small enough?
• Search for heavy neutral Higgs bosons produced in association with $b$-quarks and decaying into $b$-quarks at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for beyond the standard model Higgs bosons decaying into a $\mathrm{b}\overline{\mathrm{b}}$ pair in pp collisions at $\sqrt{s}=$ 13 TeV
• Search for a charged Higgs boson decaying into top and bottom quarks in events with electrons or muons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Minimal models for $g-2$ and dark matter confront asymptotic safety
• Constraints on charmphilic solutions to the muon g-2 with leptoquarks
• Global Fit of Modified Quark Couplings to EW Gauge Bosons and Vector-Like Quarks in Light of the Cabibbo Angle Anomaly
• $R_{K^{(\ast )}}$ and the origin of Yukawa couplings
• Search for pair production of vector-like quarks in leptonic final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• 2HDM Neutral Scalars under the LHC
• Search for single production of a vector-like $T$ quark decaying into a Higgs boson and top quark with fully hadronic final states using the ATLAS detector
• Vector-like Quark Interpretation for the CKM Unitarity Violation, Excess in Higgs Signal Strength, and Bottom Quark Forward-Backward Asymmetry
• Search for pair-production of vector-like quarks in $pp$ collision events at $\sqrt{s}=13$ TeV with at least one leptonically decaying $Z$ boson and a third-generation quark with the ATLAS detector
• Fermion mass hierarchies from vector-like families with an extended 2HDM and a possible explanation for the electron and muon anomalous magnetic moments
• Search for pair-produced vector-like top and bottom partners in events with large missing transverse momentum in pp collisions with the ATLAS detector
• Search for MSSM Higgs bosons decaying to ${\mu }^{+}{\mu }^{-}$ in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for scalar resonances decaying into ${\mu }^{+}{\mu }^{-}$ in events with and without $b$-tagged jets produced in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for third-generation vector-like leptons in $pp$ collisions at $\sqrt{s}=13\text{TeV}$ with the ATLAS detector
• Search for single production of vector-like $T$ quarks decaying into $Ht$ or $Zt$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for single vector-like $B$ quark production and decay via $B\to bH(b\bar{b})$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Road map through the desert: unification with vector-like fermions
• Search for direct production of winos and higgsinos in events with two same-charge leptons or three leptons in $pp$ collision data at $\sqrt{s}=13$ TeV with the ATLAS detector
• $Z$ mediated Flavour Changing Neutral Currents with a Fourth Vector-Like Family
• Road map through the desert with scalars