Strategy to measure tau $g-2$ via photon fusion in LHC proton collisions

Abstract

Measuring the tau-lepton ($\tau$) anomalous magnetic moment $a_{\tau }=(g_{\tau }-2)/2$ in photon fusion production ($\gamma \gamma \to \tau \tau$) tests foundational Standard Model principles. However, $\gamma \gamma \to \tau \tau$ eludes observation in LHC proton collisions (pp) despite enhanced new physics sensitivity from higher-mass reach than existing probes. We propose a novel strategy to measure $\text{pp}\to \text{p}(\gamma \gamma \to \tau \tau )\text{p}$ by introducing the overlooked electron-muon signature with vertex isolation for signal extraction. Applying the effective field theory of dipole moments, we estimate 95% CL sensitivity of $-0.0092<a_{\tau }<0.011$ assuming 300 fb${}^{-1}$ luminosity and 5% systematics. This fourfold improvement beyond existing constraints opens a crucial path to unveiling new physics imprinted in tau-lepton dipoles.

arXiv comment5 pages, 4 figures, plus bibliography and appendices

References in corpus (131)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• A Brief Introduction to PYTHIA 8.1
• Asymptotic formulae for likelihood-based tests of new physics
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• MadGraph 5 : Going Beyond
• Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL
• Dimension-Six Terms in the Standard Model Lagrangian
• Parton distributions with LHC data
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
• The anomalous magnetic moment of the muon in the Standard Model
• Measurement of the fine-structure constant as a test of the Standard Model
• The muon $g-2$ and $\alpha (M_Z^2)$: a new data-based analysis
• Matching matrix elements and shower evolution for top-quark production in hadronic collisions
• Complete Tenth-Order QED Contribution to the Muon g-2
• Measurement of the ratio of branching fractions $\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\tau }^{-}{\overline{\nu }}_{\tau })/\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\mu }^{-}{\overline{\nu }}_{\mu })$
• The Physics of Ultraperipheral Collisions at the LHC
• The Muon Anomalous Magnetic Dipole Moment in the Minimal Supersymmetric Standard Model
• New determination of the fine structure constant and test of the quantum electrodynamics
• m_T2 : the truth behind the glamour
• A new evaluation of the hadronic vacuum polarisation contributions to the muon anomalous magnetic moment and to $\mathbf{\alpha }({\mathbf{m}}_{\mathbf{Z}}^2)$
• Simplified Models for LHC New Physics Searches
• Tenth-Order QED Contribution to the Electron g-2 and an Improved Value of the Fine Structure Constant
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.20 ppm
• Evidence for light-by-light scattering in heavy-ion collisions with the ATLAS detector at the LHC
• Performance of electron and photon triggers in ATLAS during LHC Run 2
• Simplified Models for Dark Matter Searches at the LHC
• Cavity Control of a Single-Electron Quantum Cyclotron:\\Measuring the Electron Magnetic Moment
• Performance of the ATLAS muon triggers in Run 2
• Muon anomalous magnetic dipole moment in supersymmetric theories
• Measurement of the Electron Magnetic Moment
• Search for $A^{\prime }\to {\mu }^{+}{\mu }^{-}$ decays
• Searching for axion-like particles with ultra-peripheral heavy-ion collisions
• The SMEFTsim package, theory and tools
• Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV
• Searches for electroweak production of supersymmetric particles with compressed mass spectra in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Search for heavy Higgs bosons decaying into two tau leptons with the ATLAS detector using $pp$ collisions at $\sqrt{s}=13$ TeV
• Observing light-by-light scattering at the Large Hadron Collider
• Luminosity determination in $pp$ collisions at $\sqrt{s}=13$ TeV using the ATLAS detector at the LHC
• Light-by-Light Scattering Constraint on Born-Infeld Theory
• Search for New Phenomena in Dijet Mass and Angular Distributions from $pp$ Collisions at $\sqrt{s}$ = 13 TeV with the ATLAS Detector
• Axion-like particles, lepton-flavor violation and a new explanation of $a_{\mu }$ and $a_e$
• Observation of light-by-light scattering in ultraperipheral Pb+Pb collisions with the ATLAS detector
• Theory of the tau lepton anomalous magnetic moment
• Anomalous quartic WWgamma gamma, ZZgamma gamma, and trilinear WWgamma couplings in two-photon processes at high luminosity at the LHC
• Search for the Electric Dipole Moment of the tau Lepton
• A Tale of Two Anomalies
• Z' models for the LHCb and g-2 muon anomalies
• SMEFTsim 3.0 -- a practical guide
• Tagging Two-Photon Production at the LHC
• The FP420 R&D Project: Higgs and New Physics with forward protons at the LHC
• Study of exclusive two-photon production of W(+)W(-) in pp collisions at sqrt(s) = 7 TeV and constraints on anomalous quartic gauge couplings
• Explaining electron and muon $g-2$ anomaly in SUSY without lepton-flavor mixings
• Exclusive LHC physics with heavy ions: SuperChic 3
• Bisection-based asymmetric MT2 computation: a higher precision calculator than existing symmetric methods
• Search for supersymmetric partners of electrons and muons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Minimal flavor-changing $Z^{\prime }$ models and muon $g-2$ after the $R_{K^{\ast }}$ measurement
• Search for direct stau production in events with two hadronic $\tau$-leptons in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Charged-particle distributions at low transverse momentum in $\sqrt{s}$=13 TeV pp interactions measured with the ATLAS detector at the LHC
• Measurement of light-by-light scattering and search for axion-like particles with 2.2 nb${}^{-1}$ of Pb+Pb data with the ATLAS detector
• Evidence for exclusive gamma gamma to W+W- production and constraints on anomalous quartic gauge couplings in pp collisions at sqrt(s) = 7 and 8 TeV
• Search for invisible decays of the Higgs boson produced via vector boson fusion in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for exclusive or semi-exclusive photon pair production and observation of exclusive and semi-exclusive electron pair production in pp collisions at sqrt(s) = 7 TeV
• Searching for axion-like particles with proton tagging at the LHC
• Measurement of the ratios of branching fractions $\mathcal{R}(D^{\ast })$ and $\mathcal{R}(D^0)$
• Probing new physics in diphoton production with proton tagging at the Large Hadron Collider
• Electron g-2 with flavor violation in MSSM
• Anomalous electromagnetic moments of $\tau$ lepton in $\gamma \gamma \to {\tau }^{+}{\tau }^{-}$ reaction in Pb+Pb collisions at the LHC
• A new approach to modelling elastic and inelastic photon-initiated production at the LHC: SuperChic 4
• Measurement of the exclusive $\gamma \gamma \to {\mu }^{+}{\mu }^{-}$ process in proton--proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• CP Violation and the Muon Anomaly in N=1 Supergravity
• gamma-UPC: Automated generation of exclusive photon-photon processes in ultraperipheral proton and nuclear collisions with varying form factors
• Possibility of Determining $\tau$ Lepton Electromagnetic Moments in $\gamma \gamma \to {\tau }^{+}{\tau }^{-}$ Process at the CERN-LHC
• An upper limit on the anomalous magnetic moment of the τlepton
• Measurement of exclusive $\gamma \gamma \to {\ell }^{+}{\ell }^{-}$ production in proton-proton collisions at $\sqrt{s}=7$ TeV with the ATLAS detector
• New physics searches with heavy-ion collisions at the LHC
• $\gamma \gamma$ Production of Non--Strongly Interacting SUSY Particles at Hadron Colliders
• Observation and measurement of forward proton scattering in association with lepton pairs produced via the photon fusion mechanism at ATLAS
• New physics and tau $g-2$ using LHC heavy ion collisions
• Exclusive dimuon production in ultraperipheral Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with ATLAS
• $\tau$ dipole moments via radiative leptonic $\tau$ decays
• Splitting Mass Spectra and Muon g-2 in Higgs-Anomaly Mediation
• Ad Lucem: QED Parton Distribution Functions in the MMHT Framework
• Search for low-mass resonances decaying into two jets and produced in association with a photon using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Measurement of the Tau Polarisation at LEP
• Detection of two-photon exclusive production of supersymmetric pairs at the LHC
• Search for the Electric Dipole Moment and anomalous magnetic moment of the tau lepton at tau factories
• Study of Higgs boson production and its b-bbar decay in gamma-gamma processes in proton-nucleus collisions at the LHC
• LHC Searches for Dark Matter in Compressed Mass Scenarios: Challenges in the Forward Proton Mode
• Precision Measurement of the Mass of the $\tau$ Lepton
• 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
• Measurement of the $\tau$-lepton lifetime at Belle
• Measurements of the $\tau$ Mass and Mass Difference of the ${\tau }^{+}$ and ${\tau }^{-}$} at BaBar
• Towards testing the magnetic moment of the tau at one part per million
• Test of the universality of $\tau$ and $\mu$ lepton couplings in $W$-boson decays from $t\bar{t}$ events with the ATLAS detector
• Lepton Flavour Violating Leptonic/Semileptonic Decays of Charged Leptons in the Minimal Supersymmetric Standard Model
• Performance of the ATLAS Level-1 topological trigger in Run 2
• Observation of $\gamma \gamma$ $\to$ $\tau \tau$ in proton-proton collisions and limits on the anomalous electromagnetic moments of the $\tau$ lepton
• Probe of electromagnetic moments of the tau lepton in gamma-gamma collisions at the CLIC
• A Novel Approach to Fine-Tuned Supersymmetric Standard Models -- Case of Non-Universal Higgs Masses model
• Reconciling dark matter, $R_{K^{(\ast )}}$ anomalies and $(g-2{)}_{\mu }$ in an $L_{\mu }-L_{\tau }$ scenario
• Search for supersymmetry with a compressed mass spectrum in events with a soft $\tau$ lepton, a highly energetic jet, and large missing transverse momentum in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Novel method for the direct measurement of the tau lepton dipole moments
• Photon collider search strategy for sleptons and dark matter at the LHC
• 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
• Top quark pair production in the exclusive processes at LHC
• First search for exclusive diphoton production at high mass with tagged protons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Updated measurement of the tau lepton lifetime
• Measurement of the Lifetime of the Tau Lepton
• $H\to {\tau }^{+}{\tau }^{-}\gamma$ as a Probe of the $\tau$ Magnetic Dipole Moment
• Observation of photon-induced $W^{+}{W}^{-}$ production in $pp$ collisions at $\sqrt{s}=13$ TeV using the ATLAS detector
• Model-independent bounds probing on the electromagnetic dipole moments of the $\tau$-lepton at the CLIC
• Search for an axion-like particle with forward proton scattering in association with photon pairs at ATLAS
• Towards a determination of the tau lepton dipole moments
• Measuring the masses of a pair of semi-invisibly decaying particles in central exclusive production with forward proton tagging
• Peccei-Quinn Symmetry and Nucleon Decay in Renormalizable SUSY SO(10)
• Constraining $\tau$-lepton dipole moments and gluon couplings at the LHC
• Exclusive dielectron production in ultraperipheral Pb+Pb collisions at $\sqrt{s_{{}_{\text{NN}}}}=5.02$ TeV with ATLAS
• LHC tau-pair production constraints on $a_{\tau }$ and $d_{\tau }$
• Analysing parameter space correlations of recent 13 TeV gluino and squark searches in the pMSSM
• The ${\mu }^{+}{\mu }^{-}$ collider to sensitivity estimates on the magnetic and electric dipole moments of the tau-lepton
• Search for the electromagnetic moments of the $\tau$ lepton in photon-photon collisions at the LHeC and the FCC-he
• The Rumble in the Meson: a leptoquark versus a $Z^{\prime }$ to fit $b\to s{\mu }^{+}{\mu }^{-}$ anomalies including 2022 LHCb $R_{K^{(\ast )}}$ measurements
• Measurement of $\tau$ polarisation in $Z/{\gamma }^{\ast }\to \tau \tau$ decays in proton-proton collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Search for high-mass exclusive $\gamma \gamma$ $\to$ WW and $\gamma \gamma$ $\to$ ZZ production in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Measurement of distributions sensitive to the underlying event in inclusive $Z$-boson production in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Measurement of the $\tau$ lepton polarization in Z boson decays in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Tau $g-2$ at $e^{-}{e}^{+}$ colliders with momentum dependent form factor
• Exclusive Lepton Pair Production at the Electron-Ion Collider -- A Powerful Research Tool
• Electric Dipole Moments as Probes of $B$ Anomaly

Cited by in corpus (5)

• Towards testing $(g-2{)}_{\tau }$ in $e^{+}{e}^{-}\to {\tau }^{+}{\tau }^{-}$: radiative corrections and projections for Belle II
• Light new physics and the $\tau$ lepton dipole moments: prospects at Belle II
• Extended thermal cycling of ATLAS ITk strip modules with and without stress mitigating interposers
• A measurement of the high-mass $\tau \bar{\tau }$ production cross-section at $\sqrt{s}=13$ TeV with the ATLAS detector and constraints on new particles and couplings
• Probing the Tau Anomalous Magnetic Moment at Colliders: From Ultra-Peripheral Collisions to the Precision Frontier