How to pin down the CP quantum numbers of a Higgs boson in its tau decays at the LHC

Abstract

We investigate how the CP quantum numbers of a neutral Higgs boson or spin-zero resonance, produced at the CERN Large Hadron Collider, can be determined in its tau-pair decay mode. We use a method developed in an earlier paper based on the distributions of two angles and apply it to the major 1-prong tau decays. We show for the resulting dilepton, lepton-pion, and two-pion final states that appropriate selection cuts significantly enhance the discriminating power of these observables. From our analysis we conclude that, provided a Higgs boson will be found at the LHC, it appears feasible to collect the event numbers needed to discriminate between a CP-even and -odd Higgs boson and/or between Higgs boson(s) with CP-conserving and CP-violating couplings after several years of high-luminosity runs.

23 pages, 12 figures; Several sentences and references added

References in corpus (7)

• A New Mass Reconstruction Technique for Resonances Decaying to di-tau
• Higgs production at the lHC
• Search for Neutral MSSM Higgs Bosons Decaying to Tau Pairs in pp Collisions at sqrt(s)=7 TeV
• Determining the CP parity of Higgs bosons at the LHC in their tau decay channels
• Search for neutral MSSM Higgs bosons decaying to tau^+ tau^- pairs in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Determining the CP parity of Higgs bosons at the LHC in the $\tau$ to 1-prong decay channels
• Concepts of Electroweak Symmetry Breaking and Higgs Physics

Cited by in corpus (51)

• Disentangling Higgs-Top Couplings in Associated Production
• MSSM Interpretations of the LHC Discovery: Light or Heavy Higgs?
• Lab-frame observables for probing the top-Higgs interaction
• Measuring CP Violation in $h\to {\tau }^{+}{\tau }^{-}$ at Colliders
• Constraining CP-violating Higgs Sectors at the LHC using gluon fusion
• Better Higgs-CP Tests Through Information Geometry
• Boosted Higgs Shapes
• The C2HDM revisited
• Higgs Physics: It ain't over till it's over
• Higgs CP Properties From Early LHC Data
• Higgs CP properties using the tau decay modes at the ILC
• Exploring the CP-violating NMSSM: EDM Constraints and Phenomenology
• Prospects of constraining the Higgs CP nature in the tau decay channel at the LHC
• Can the 126 GeV boson be a pseudoscalar?
• Probing CP Violation in $h\to \gamma \gamma$ with Converted Photons
• Determination of the Higgs CP mixing angle in the tau decay channels at the LHC including the Drell-Yan background
• An effective gauge-Higgs operators analysis of new physics associated with the Higgs
• New Observables for CP Violation in Higgs Decays
• 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
• Probing the CP nature of the Higgs coupling in $t\bar{t}h$ events at the LHC
• Exploring CP Violation in the MSSM
• Probing CP-violating Higgs and gauge boson couplings in the Standard Model effective field theory
• Inferring the nature of the boson at 125-126 GeV
• Spin-2 Resonances in Vector-Boson-Fusion Processes at NLO QCD
• Probing CP violation in $h\to {\tau }^{-}{\tau }^{+}$ at the LHC
• Prospect for measuring the CP phase in the $h\tau \tau$ coupling at the LHC
• The Higgs boson -- its implications and prospects for future discoveries
• Potential for optimizing Higgs boson CP measurement in H to tau tau decay at LHC and ML techniques
• $H\to {\tau }^{+}{\tau }^{-}\gamma$ as a Probe of the $\tau$ Magnetic Dipole Moment
• Measurement of the $CP$ properties of Higgs boson interactions with $\tau$-leptons with the ATLAS detector
• Probing CP violation in $e^{+}{e}^{-}$ production of the Higgs boson and toponia
• Angular distributions in $t\bar{t}H(H\to b\bar{b})$ reconstructed events at the LHC
• Reconstructing semi-invisible events in resonant tau pair production from Higgs
• CP-violation, Asymmetries and Interferences in $t\bar{t}\varphi$
• The Role of the $t\bar{t}h$ Rest Frame in Direct Top-Quark Yukawa Coupling Measurements
• Measuring the CP property of Higgs coupling to tau leptons in the VBF channel at the LHC
• CP-violating Higgs Di-tau Decays: Baryogenesis and Higgs Factories
• Light Higgs searches in $t\bar{t}\varphi$ production at the LHC
• P-even, CP-violating Signals in Scalar-Mediated Processes
• Angular asymmetries as a probe for anomalous contributions to HZZ vertex at the LHC
• Probing CP violating Higgs sectors via the precision measurement of coupling constants
• Probing the CP-Violation effects in the $h\tau \tau$ coupling at the LHC
• Search for CP violation effects in the $h\to \tau \tau$ decay with $e^{+}{e}^{-}$ colliders
• Higher Order Corrections to the Trilinear Higgs Self-Couplings in the Real NMSSM
• Exploring Supersymmetric CP Violation after LHC Run 2 with Electric Dipole Moments and B Observables
• Exploring CP phase in $\tau$-lepton Yukawa coupling in Higgs decays at the LHC
• Measuring $CP$ nature of $h\tau \bar{\tau }$ coupling at $e^{-}p$ collider
• Exploring CP violation in $H\to {\tau }^{+}{\tau }^{-}\gamma$
• Working with Kolya Uraltsev for twenty-five years about Fundamental Dynamics & Symmetries and for the future -- like CP Violation & EDMs
• Determination of the Higgs CP-mixing angle in the tau decay channels
• Decay of the Higgs boson to longitudinally polarized leptons and quarks