Analysis of the CP structure of the Yukawa coupling between the Higgs boson and $\tau$ leptons in proton-proton collisions at $\sqrt{s}=$ 13 TeV

Abstract

The first measurement of the CP structure of the Yukawa coupling between the Higgs boson and $\tau$ leptons is presented. The measurement is based on data collected in proton-proton collisions at $\sqrt{s}=$ 13 TeV by the CMS detector at the LHC, corresponding to an integrated luminosity of 137 fb${}^{-1}$. The analysis uses the angular correlation between the decay planes of $\tau$ leptons produced in Higgs boson decays. The effective mixing angle between CP-even and CP-odd $\tau$ Yukawa couplings is found to be $-$1 $\pm$ 19${}^{\circ }$, compared to an expected value of 0 $\pm$ 21${}^{\circ }$ at the 68.3% confidence level. The data disfavour the pure CP-odd scenario at 3.0 standard deviations. The results are compatible with predictions for the standard model Higgs boson.

arXiv commentReplaced with the published version. Added the journal reference and the DOI. All the figures and tables, including additional supplemental figures and tables, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-20-006 (CMS Public Pages)

References in corpus (38)

• XGBoost: A Scalable Tree Boosting System
• 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
• 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
• Parton distributions for the LHC Run II
• Parton distributions from high-precision collider data
• Top++: a program for the calculation of the top-pair cross-section at hadron colliders
• Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
• Single-top Wt-channel production matched with parton showers using the POWHEG method
• Description and performance of track and primary-vertex reconstruction with the CMS tracker
• Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV
• Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at sqrt(s) = 8 TeV
• Combining QCD and electroweak corrections to dilepton production in FEWZ
• NLO Higgs boson production via vector-boson fusion matched with shower in POWHEG
• Pileup Per Particle Identification
• NNLOPS simulation of Higgs boson production
• Higgs production via gluon fusion in the POWHEG approach in the SM and in the MSSM
• Single-top t-channel hadroproduction in the four-flavour scheme with POWHEG and aMC@NLO
• Effective-Field-Theory Approach to Top-Quark Production and Decay
• Hadronic top-quark pair-production with one jet and parton showering
• Constraining anomalous Higgs boson couplings to the heavy flavor fermions using matrix element techniques
• Higgs characterisation at NLO in QCD: CP properties of the top-quark Yukawa interaction
• Prospects of Measuring the Parity of Higgs Particles
• Higgs plus two jet production via gluon fusion as a signal at the CERN LHC
• Measuring CP Violation in $h\to {\tau }^{+}{\tau }^{-}$ at Colliders
• How to pin down the CP quantum numbers of a Higgs boson in its tau decays at the LHC
• Determining the CP parity of Higgs bosons at the LHC in the $\tau$ to 1-prong decay channels
• Measuring the Higgs boson's parity using tau --> rho nu
• Exploring the CP-violating NMSSM: EDM Constraints and Phenomenology
• NLO QCD+EW predictions for HV and HV+jet production including parton-shower effects
• Prospects of constraining the Higgs CP nature in the tau decay channel at the LHC
• Determination of the Higgs CP mixing angle in the tau decay channels at the LHC including the Drell-Yan background
• Documentation of TauSpinner algorithms -- program for simulating spin effects in tau-lepton production at LHC
• Determining the space-time structure of bottom-quark couplings to spin-zero particles

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• Higgs-boson visible and invisible constraints on hidden sectors
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• A 95 GeV Higgs Boson in the Georgi-Machacek Model
• Measurement of the $CP$ properties of Higgs boson interactions with $\tau$-leptons with the ATLAS detector
• Constraints on anomalous Higgs boson couplings to vector bosons and fermions from the production of Higgs bosons using the $\tau \tau$ final state
• P-even, CP-violating Signals in Scalar-Mediated Processes
• Heterogeneous Graph Neural Network for Identifying Hadronically Decayed Tau Leptons at the High Luminosity LHC
• Test of $CP$ Invariance in Higgs Boson Vector-Boson-Fusion Production Using the $H\to \gamma \gamma$ Channel with the ATLAS Detector
• Enhanced $B_q\to \ell {\ell }^{\prime }$ and $B\to (K,\pi )\ell {\ell }^{\prime }$ in light of $(g-2{)}_{\mu }$
• Identification of tau leptons using a convolutional neural network with domain adaptation
• Pseudoscalar Higgs boson decay to three parton amplitudes at NNLO to higher orders in the dimensional regulator
• Exploring CP violation in $H\to {\tau }^{+}{\tau }^{-}\gamma$
• Illuminating all-hadronic final states with a photon: Exotic decays of the Higgs boson to four bottom quarks in vector boson fusion plus gamma at hadron colliders
• Combination of measurements of CP properties of Higgs boson interactions with vector bosons using proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector