Search for lepton-flavor violating decays of the Higgs boson in the $\mu \tau$ and e$\tau$ final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV

Abstract

A search is presented for lepton-flavor violating decays of the Higgs boson to $\mu \tau$ and e$\tau$. The data set corresponds to an integrated luminosity of 137 fb${}^{-1}$ collected at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV. No significant excess has been found, and the results are interpreted in terms of upper limits on lepton-flavor violating branching fractions of the Higgs boson. The observed (expected) upper limits on the branching fractions are, respectively, $\mathcal{B}($H $\to \mu \tau )$ $<$ 0.15 (0.15)% and $\mathcal{B}($H$\to$e$\tau )$ $<$ 0.22 (0.16)% at 95% confidence level.

arXiv commentReplaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-20-009 (CMS Public Pages)

References in corpus (72)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• The anti-k_t jet clustering algorithm
• An Introduction to PYTHIA 8.2
• FastJet user manual
• Asymptotic formulae for likelihood-based tests of new physics
• A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
• A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Confidence Level Computation for Combining Searches with Small Statistics
• Parton distributions from high-precision collider data
• Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
• Particle-flow reconstruction and global event description with the CMS detector
• Non-Abelian Discrete Symmetries in Particle Physics
• Pileup subtraction using jet areas
• The CMS trigger system
• TMVA - Toolkit for Multivariate Data Analysis
• Merging meets matching in MC@NLO
• Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 TeV
• The Catchment Area of Jets
• Observation of a new boson with mass near 125 GeV in pp collisions at sqrt(s) = 7 and 8 TeV
• Event generator tunes obtained from underlying event and multiparton scattering measurements
• Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV
• Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
• Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV
• Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at sqrt(s) = 8 TeV
• Evidence for the spin-0 nature of the Higgs boson using ATLAS data
• Performance of the CMS muon detector and muon reconstruction with proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for Lepton Flavor Violating Tau Decays into Three Leptons with 719 Million Produced Tau+Tau- Pairs
• Combined measurements of Higgs boson couplings in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Extraction and validation of a new set of CMS PYTHIA8 tunes from underlying-event measurements
• NLO Higgs boson production via gluon fusion matched with shower in POWHEG
• Study of the mass and spin-parity of the Higgs boson candidate via its decays to Z boson pairs
• Flavor Violating Higgs Decays
• Measurements of the Higgs boson production and decay rates and coupling strengths using $pp$ collision data at $\sqrt{s}=7$ and $8$ TeV in the ATLAS experiment
• Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV
• Performance of the CMS Level-1 trigger in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Measurements of Inclusive W and Z Cross Sections in pp Collisions at sqrt(s)=7 TeV
• Electron and photon reconstruction and identification with the CMS experiment at the CERN LHC
• Flavor Physics in the Randall-Sundrum Model: I. Theoretical Setup and Electroweak Precision Tests
• Higgs production via gluon fusion in the POWHEG approach in the SM and in the MSSM
• Performance of missing transverse momentum reconstruction in proton-proton collisions at $\sqrt{s}=$ 13 TeV using the CMS detector
• Jet pair production in POWHEG
• Standard Model Higgs-Boson Branching Ratios with Uncertainties
• Measurements of properties of the Higgs boson decaying into the four-lepton final state in pp collisions at sqrt(s) = 13 TeV
• Observation of the Higgs boson decay to a pair of tau leptons with the CMS detector
• Delta F=2 Observables and Fine-Tuning in a Warped Extra Dimension with Custodial Protection
• Flavour-Changing Decays of a 125 GeV Higgs-like Particle
• Performance of reconstruction and identification of $\tau$ leptons decaying to hadrons and ${\nu }_{\tau }$ in pp collisions at $\sqrt{s}=$ 13 TeV
• A minimal set of top-Higgs anomalous couplings
• New Search for tau -> mu gamma and tau -> e gamma Decays at Belle
• Higgs-dependent Yukawa couplings
• Probing lepton flavour violation with Higgs boson decays H-> li+lj
• Higgs Mediated FCNC's in Warped Extra Dimensions
• Natural Neutrino Masses and Mixings from Warped Geometry
• Reconstruction and identification of tau lepton decays to hadrons and tau neutrino at CMS
• Composite Higgs-Mediated FCNC
• NLO predictions for Higgs boson pair production with full top quark mass dependence matched to parton showers
• Leptonic CP Asymmetries in Flavor-changing H0 Decays
• Lepton flavor violation in the Higgs sector and the role of hadronic tau-lepton decays
• Higgs-induced lepton flavor violation
• Modified Higgs branching ratios versus CP and lepton flavor violation
• Higgs boson pair production in non-linear Effective Field Theory with full $m_t$-dependence at NLO QCD
• $h\to \mu \tau$ at Hadron Colliders
• Electroweak and Flavour Structure of a Warped Extra Dimension with Custodial Protection
• Comprehensive Analysis on Lepton Flavor Violating Higgs Boson to mu tau Decay in Supersymmetry without R Parity
• Search for lepton flavour violating decays of the Higgs boson to e tau and e mu in proton-proton collisions at sqrt(s) = 8 TeV
• Search for lepton flavour violating decays of the Higgs boson to $\mu \tau$ and e$\tau$ in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Searches for lepton-flavour-violating decays of the Higgs boson in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• The Impact of Kaluza-Klein Fermions on Standard Model Fermion Couplings in a RS Model with Custodial Protection
• An embedding technique to determine $\tau \tau$ backgrounds in proton-proton collision data

Cited by in corpus (28)

• Likelihood analysis of the flavour anomalies and $g-2$ in the general two Higgs doublet model
• Introduction to Charged Lepton Flavour Violation
• Lepton portal dark matter at muon colliders: Total rates and generic features for phenomenologically viable scenarios
• Lepton-Flavor-Violating ALP Signals with TeV-Scale Muon Beams
• Search for the lepton-flavor violating decay of the Higgs boson and additional Higgs bosons in the e$\mu$ final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Effective comparison of neutrino-mass models
• Searches for exclusive Higgs and $Z$ boson decays into a vector quarkonium state and a photon using $139$ fb${}^{-1}$ of ATLAS $\sqrt{s}=13$ TeV proton$-$proton collision data
• Search for the charged-lepton-flavor-violating decay $Z\to e\mu$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Constraining Lepton Flavor Violating Higgs Couplings at the HL-LHC in the Vector Boson Fusion Channel
• Collider Prospects for Muon $g-2$ in General Two Higgs Doublet Model
• Low energy phenomena of the lepton sector in an $A_4$ symmetry model with heavy inverse seesaw neutrinos
• Current Status of the Muon g-2 Interpretations within Two-Higgs-Doublet Models
• Snowmass 2021 White Paper: Charged lepton flavor violation in the tau sector
• Hints of a new leptophilic Higgs sector?
• Decadal Mission for the New Physics Higgs/Flavor Era
• Probing chirality structure in lepton-flavour-violating Higgs decay $h\to \tau \mu$ at the LHC
• Influence of QCD parton shower in deep learning invisible Higgs through vector boson fusion
• Searching exotic Higgs bosons at the LHC
• Lessons from LHC on the LFV Higgs decays $h\to {\ell }_a{\ell }_b$ in the Two-Higgs Doublet Models
• Enhanced $B_q\to \ell {\ell }^{\prime }$ and $B\to (K,\pi )\ell {\ell }^{\prime }$ in light of $(g-2{)}_{\mu }$
• $CP$ violation in the $HZZ$ vertex and left-right asymmetries
• Lepton Flavor Violation: From Muon Decays to Muon Colliders
• Improved Bounds and Global Fit of Flavor-Violating Charged Lepton Yukawa Couplings post LHC
• Decays $Z\to e_a{e}_b$ in a 3-3-1 model with neutral leptons
• Search for charged lepton flavor violating Z and Z' boson decays in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Freeze-in Leptogenesis via Dark-Matter Oscillations
• Searches for charged-lepton-flavor violation in ${\chi }_{bJ}(1P)$ decays
• Leptophilic Portals to New Physics at Colliders