Interference Resurrection of the $\tau$ Dipole through Quantum Tomography

Abstract

Helicity selection rules can suppress the leading contributions from dimension-6 operators in the Standard Model Effective Field Theory (SMEFT), reducing sensitivity to potential new physics. This paper explores how the interference contributions from the $\tau$ lepton's anomalous dipole moment are restored in different observable, in particular comparing the sensitivity to SMEFT operators of quantum information observables and more traditional spin correlations. We compute the sensitivity of various observables-including entanglement measures, Bell inequality violations, and quantum uncertainties-to new physics effects using Monte Carlo simulations. Spin correlation observables are found to outperform both the integrated cross-section and quantum information observables in sensitivity to both $CP$-conserving and -violating effects, improving the sensitivity to the scale of new physics by up to a factor of 3. Our results suggest that quantum information observables are suboptimal probes for resurrecting the interference, and more in general to disentangle the $CP$ properties of new physics

arXiv commentv2: 47 pages, 10 figures, 2 tables. Improved presentation, added MC simulations of tau decays for more robust projected sensitivities. Main conclusions about quantum information observables unchanged. Matches published version

References in corpus (74)

• Quantum entanglement
• Entanglement of Formation of an Arbitrary State of Two Qubits
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Separability Criterion for Density Matrices
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• Dimension-Six Terms in the Standard Model Lagrangian
• Automatized One-Loop Calculations in 4 and D dimensions
• Generating Feynman Diagrams and Amplitudes with FeynArts 3
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
• The anomalous magnetic moment of the muon in the Standard Model
• Quantum Nonlocality without Entanglement
• Physics of leptoquarks in precision experiments and at particle colliders
• The Standard Model as an Effective Field Theory
• Characterizing Nonclassical Correlations via Local Quantum Uncertainty
• Top quark pair production and decay at hadron colliders
• Quantum discord and its allies: a review
• Quantum Tomography
• The PDF4LHC21 combination of global PDF fits for the LHC Run III
• A New Mass Reconstruction Technique for Resonances Decaying to di-tau
• Entanglement and quantum tomography with top quarks at the LHC
• Entanglement Suppression and Emergent Symmetries of Strong Interactions
• Theory of the tau lepton anomalous magnetic moment
• Helicity Selection Rules and Non-Interference for BSM Amplitudes
• Muon Anomalous Magnetic Moment and Leptoquark Solutions
• Quantum information with top quarks in QCD
• Anomalous Triple Gauge Couplings in the Effective Field Theory Approach at the LHC
• Observation of quantum entanglement in top-quark pairs using the ATLAS detector
• Quantum discord and steering in top quarks at the LHC
• ManeParse: a Mathematica reader for Parton Distribution Functions
• Muon $g-2$ and scalar leptoquark mixing
• Diboson Interference Resurrection
• Maximal Entanglement in High Energy Physics
• Patterns of Strong Coupling for LHC Searches
• Consequences of chirally enhanced explanations of $(g-2{)}_{\mu }$ for $h\to \mu \mu$ and $Z\to \mu \mu$
• Novel measurements of anomalous triple gauge couplings for the LHC
• Effective field theory interpretation of lepton magnetic and electric dipole moments
• Tau anomalous magnetic moment form factor at Super B/Flavor factories
• Model independent bounds on the tau lepton electromagnetic and weak magnetic moments
• A set of top quark spin correlation and polarization observables for the LHC: Standard Model predictions and new physics contributions
• Testing Gluon Self-Interactions in Three Jet Events at Hadron Colliders
• A New Twist on Top Quark Spin Correlations
• Implications of scalar and tensor explanations of $R_{D^{(\ast )}}$
• Quantum information and CP measurement in $H\to {\tau }^{+}{\tau }^{-}$ at future lepton colliders
• The tau weak-magnetic dipole moment
• Minimal Entanglement and Emergent Symmetries in Low-energy QCD
• TauDecay: a library to simulate polarized tau decays via FeynRules and MadGraph5
• $\tau$ dipole moments via radiative leptonic $\tau$ decays
• Search for the Electric Dipole Moment and anomalous magnetic moment of the tau lepton at tau factories
• Observation of the $\gamma \gamma \to \tau \tau$ process in Pb+Pb collisions and constraints on the $\tau$-lepton anomalous magnetic moment with the ATLAS detector
• Quantum tops at circular lepton colliders
• Precision diboson measurements at hadron colliders
• CP Violation Beyond the Standard Model and Tau Pair Production in $e^{+}{e}^{-}$ Collisions
• Entanglement in flavored scalar scattering
• Tau spin correlations and the anomalous magnetic moment
• Novel method for the direct measurement of the tau lepton dipole moments
• Optimizing Fictitious States for Bell Inequality Violation in Bipartite Qubit Systems
• Observation of $\tau$ lepton pair production in ultraperipheral lead-lead collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Feasibility of tau lepton electromagnetic dipole moments measurement using bent crystal at the LHC
• The electric dipole moment of the tau lepton revisited
• An improved search for the electric dipole moment of the $\tau$ lepton
• Quantum tomography with $\tau$ leptons at the FCC-ee
• $H\to {\tau }^{+}{\tau }^{-}\gamma$ as a Probe of the $\tau$ Magnetic Dipole Moment
• Reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of tau leptons using matrix element techniques
• Towards a determination of the tau lepton dipole moments
• Tau lepton reconstruction at collider experiments using impact parameters
• On interference and non-interference in the SMEFT
• LHC tau-pair production constraints on $a_{\tau }$ and $d_{\tau }$
• Production of heavy Higgs bosons and decay into top quarks at the LHC. II: Top-quark polarization and spin correlation effects
• Reconstruction of $\tau$ lepton pair invariant mass using an artificial neural network
• Jet Substructure Measurements of Interference in Non-Interfering SMEFT Effects
• Spin correlations in $\tau$-lepton pair production due to anomalous magnetic and electric dipole moments
• Constraints on $\tau$ electromagnetic moments via tau pair production at the Muon colliders
• Neural networks for boosted di-$\tau$ identification
• A unified machine learning approach for reconstructing hadronically decaying tau leptons

Cited by in corpus (3)

• Ultimate Quantum Precision Limit at Colliders: Conditions and Case Studies
• Probing the Tau Anomalous Magnetic Moment at Colliders: From Ultra-Peripheral Collisions to the Precision Frontier
• Colliders are not Testing Locality via Bell's Inequality nor Providing an Unconditional Proof of Entanglement