Constraints on scalar and vector leptoquarks from the LHC Higgs data

Abstract

We study contributions of single scalar or vector leptoquark (LQ) to loop-induced Higgs processes, gluon fusion production ($gg\to h$) and $h\to \gamma \gamma$ decay, by analyzing the current Higgs data from the LHC Run I and II. Scalar LQ is studied in a model independent way, while the vector LQ $U_1(3,1,2/3)$ is discussed in the '4321' model. Constraints on the interactions of LQ and Higgs boson are obtained. We provide a method to determine vacuum expectation values ${\upsilon }_3$ and ${\upsilon }_1$ of the new scalar fields ${\Omega }_3$ and ${\Omega }_1$ in the '4321' model via the combination of Higgs data and measurements of $R_{D^{(\ast )}}$ and $R_{K^{(\ast )}}$.

References in corpus (38)

• Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC $pp$ collision data at $\sqrt{s}=$ 7 and 8 TeV
• Test of lepton universality using $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Evidence for an excess of B -> D(*) Tau Nu decays
• Measurement of an Excess of B -> D(*) Tau Nu Decays and Implications for Charged Higgs Bosons
• Measurement of the branching ratio of $\bar{B}\to D^{(\ast )}{\tau }^{-}{\bar{\nu }}_{\tau }$ relative to $\bar{B}\to D^{(\ast )}{\ell }^{-}{\bar{\nu }}_{\ell }$ decays with hadronic tagging at Belle
• Measurement of the ratio of branching fractions $\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\tau }^{-}{\overline{\nu }}_{\tau })/\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\mu }^{-}{\overline{\nu }}_{\mu })$
• B-physics anomalies: a guide to combined explanations
• Measurement of the $\tau$ lepton polarization and $R(D^{\ast })$ in the decay $\bar{B}\to D^{\ast }{\tau }^{-}{\bar{\nu }}_{\tau }$
• On the Standard Model predictions for $R_K$ and $R_{K^{\ast }}$
• Combined measurements of Higgs boson couplings in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• On the B to D* tau nu Sensitivity to New Physics
• Search for lepton-universality violation in $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Measurement of the branching ratio of ${\bar{B}}^0\to D^{\ast +}{\tau }^{-}{\bar{\nu }}_{\tau }$ relative to ${\bar{B}}^0\to D^{\ast +}{\ell }^{-}{\bar{\nu }}_{\ell }$ decays with a semileptonic tagging method
• $B$ Meson Anomalies in a Pati-Salam Model within the Randall-Sundrum Background
• A model of vector leptoquarks in view of the $B$-physics anomalies
• B-decay discrepancies after Moriond 2019
• Measurement of $\mathcal{R}(D)$ and $\mathcal{R}(D^{\ast })$ with a semileptonic tagging method
• Scalar leptoquarks from GUT to accommodate the $B$-physics anomalies
• The Leptoquark Hunter's Guide: Pair Production
• Test of lepton-flavor universality in $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decays at Belle
• Left-Right SU(4) Vector Leptoquark Model for Flavor Anomalies
• Update on the b->s anomalies
• Pati-Salam explanations of the B-meson anomalies
• A unified leptoquark model confronted with lepton non-universality in $B$-meson decays
• Addressing the ${\mathbf{R}}_{D^{(\ast )}}$ anomalies with an ${\mathbf{S}}_1$ leptoquark from $\mathbf{SO}(10)$ grand unification
• Interpreting the $R_{K^{(\ast )}}$ Anomaly in the Colored Zee-Babu Model
• Constraints on New Scalars from the LHC 125 GeV Higgs Signal
• Searches for scalar leptoquarks and differential cross-section measurements in dilepton-dijet events in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 13 TeV with the ATLAS experiment
• Diboson Excess from a New Strong Force
• A chiral SU(4) explanation of the $b\to s$ anomalies
• Higgs Uncovering Light Scalar Remnants of High Scale Matter Unification
• Precision Higgs Measurements: Constraints from New Oblique Corrections
• On the Minimal Flavor Violating Leptoquark Explanation of the $R_{D^{(\ast )}}$ Anomaly
• CP Violation in ${\bar{B}}^0\to D^{\ast +}{\mu }^{-}{\bar{\nu }}_{\mu }$
• Scalar leptoquarks and Higgs pair production at the LHC
• Linking lepton number violation with $B$ anomalies
• A New Left-Right Symmetry Model
• $R_D$ and $R_{D^{\ast }}$: Theoretical Development

Cited by in corpus (5)

• Unified explanation of flavor anomalies, radiative neutrino mass and ANITA anomalous events in a vector leptoquark model
• Complete Lagrangian and Set of Feynman Rules for Scalar Leptoquarks
• Constraints on leptoquarks from lepton-flavour-violating tau-lepton processes
• Next-to-Leading-Order QCD Matching for $\Delta F=2$ Processes in Scalar Leptoquark Models
• Effects of vector leptoquarks on ${\Lambda }_b\to {\Lambda }_c\ell {\overline{\nu }}_{\ell }$ decay