pith. sign in

arxiv: 2601.18288 · v2 · pith:ZHKDTXALnew · submitted 2026-01-26 · ✦ hep-ph · hep-ex

Probing electromagnetic moments of the tau lepton in PbPb collisions at the FCC-hh

S.C. \.Inan , A.V. Kisselev This is my paper

Pith reviewed 2026-05-21 14:57 UTC · model grok-4.3

classification ✦ hep-ph hep-ex
keywords tau leptonanomalous magnetic momentelectric dipole momentPbPb collisionsFCC-hhphoton-photon fusionultra-peripheral collisions
0
0 comments X

The pith

PbPb collisions at the FCC-hh can set new limits on the tau lepton's anomalous magnetic moment and electric dipole moment.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

This paper examines the production of tau lepton pairs in ultra-peripheral lead-lead collisions at the future FCC-hh collider, where the process occurs mainly through photon-photon fusion. The authors calculate how the anomalous magnetic moment a_τ and electric dipole moment d_τ of the tau would alter the production rate and distributions. They then derive 95% confidence level exclusion limits along with 3σ and 5σ sensitivity projections for these moments. A reader might care because these moments are poorly constrained for the heavy tau compared to lighter leptons, and tighter bounds could hint at new physics. The study also compares the reach to that of other planned colliders.

Core claim

The central claim is that by studying tau pair production via two-photon fusion in PbPb collisions at the FCC-hh, one can obtain 95% C.L. exclusion limits as well as 3σ and 5σ sensitivity limits on the anomaly magnetic moment a_τ and the electric dipole moment d_τ of the tau lepton, with comparisons to bounds from other future colliders.

What carries the argument

The cross section for tau-pair production in ultra-peripheral PbPb collisions modified by the tau electromagnetic form factors.

Load-bearing premise

The analysis assumes that tau-pair production proceeds dominantly via photon-photon fusion in ultra-peripheral PbPb collisions and that backgrounds, detector resolution, and acceptance can be modeled sufficiently well to isolate the contributions from a_τ and d_τ.

What would settle it

A precise measurement of the tau pair invariant mass distribution or production cross section in PbPb collisions at FCC-hh energies that matches the Standard Model prediction without anomalous contributions would confirm the limits or require revision if deviations appear.

Figures

Figures reproduced from arXiv: 2601.18288 by A.V. Kisselev, S.C. \.Inan.

Figure 1
Figure 1. Figure 1: The differential cross section of the collision [PITH_FULL_IMAGE:figures/full_fig_p009_1.png] view at source ↗
Figure 2
Figure 2. Figure 2: The same as in Fig. 1, but for the case [PITH_FULL_IMAGE:figures/full_fig_p010_2.png] view at source ↗
Figure 3
Figure 3. Figure 3: The exclusion significance SSexcl as a function of the anomalous magnetic moment of the tau lepton in PbPb collision at the FCC-hh. The τ electric dipole moment is fixed and equal to dτ = 0. The discovery significance is defined as [86]-[88] SSdisc =  2  (S + B) ln (B + S)(1 + δ 2B) B + δ 2B(S + B)  − 1 δ 2 ln 1 + δ 2S 1 + δ 2B  1/2 . (32) In particular, in the limit δ → 0 we find that SSdisc = p 2… view at source ↗
Figure 4
Figure 4. Figure 4: The exclusion significance SSexcl as a function of the electric dipole moment of the tau lepton in PbPb collision at the FCC-hh. The τ anomalous magnetic moment is fixed and equal to aτ = 0. From Figs. 3, 4 we find the 95% C.L. exclusion bounds, |aτ | ≤ 0.0102 , |dτ | ≤ 5.75 × 10−17 e cm . (34) Correspondingly, from From [PITH_FULL_IMAGE:figures/full_fig_p012_4.png] view at source ↗
Figure 5
Figure 5. Figure 5: The discovery significance SSdisc as a function of the anomalous magnetic moment of the tau lepton in PbPb collision at the FCC-hh. The τ electric dipole moment is fixed and equal to dτ = 0. tau lepton through the process P bP b → P b γγ P b → P b τ +τ − P b , (37) This work takes advantage of the large increase in photon flux proportional the Z 4 and the clean experimental environment provided by exclusiv… view at source ↗
Figure 6
Figure 6. Figure 6: The discovery significance SSdisc as a function of the electric dipole moment of the tau lepton in PbPb collision at the FCC-hh. The τ anomalous magnetic moment is fixed and equal to aτ = 0. look like [69] aτ = [−0.00128, 0.00105] , |dτ (e cm)| = 0.64394 × 10−17 . (39) The 95% C.L. bounds on aτ and dτ were also estimated for the µ +µ − → µ +τ τµ¯ − collision at a future 6 TeV muon collider with L = 710 fb−… view at source ↗
read the original abstract

A production of a pair of tau leptons in PbPb collisions at the FCC-hh collider is examined. The 95\% C.L. exclusion limits, as well as 3$\sigma$ and 5$\sigma$ sensitivity limits on the anomaly magnetic moment of the tau lepton $a_\tau$ and its electric dipole moment $d_\tau$ are obtained. A comparison with bounds on $a_\tau$ and $d_\tau$ for other future colliders are given.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

2 major / 2 minor

Summary. The paper examines tau-lepton pair production in ultra-peripheral PbPb collisions at the FCC-hh via photon-photon fusion. Using the equivalent-photon approximation at leading order, it derives 95% C.L. exclusion limits together with 3σ and 5σ sensitivity projections on the anomalous magnetic moment a_τ and electric dipole moment d_τ, and compares these projections with those expected at other future colliders.

Significance. If the modeling assumptions hold, the projected limits would provide competitive constraints on the tau electromagnetic moments at a future high-energy hadron collider, extending the reach beyond current LEP and LHC bounds and offering a useful benchmark for other proposed facilities. The approach of exploiting heavy-ion collisions for dipole-moment sensitivity is conceptually interesting.

major comments (2)
  1. [§3] §3 (Analysis framework): The 95% C.L., 3σ and 5σ limits rest on generator-level kinematic cuts applied to leading-order γγ → τ⁺τ⁻ matrix elements computed in the equivalent-photon approximation. No full GEANT-level detector simulation, pile-up overlay, or data-driven background estimate is presented; if tau-ID efficiency or background rejection is overestimated by ~30%, the quoted sensitivities would shift by a comparable factor. This modeling choice is load-bearing for the central numerical claims.
  2. [§4] §4 (Results): The paper states that γγ → τ⁺τ⁻ dominates after cuts, yet supplies no explicit cross-section ratios, rejection factors, or migration matrices for the distributions sensitive to d_τ. Without these, it is not possible to assess whether the claimed exclusion and discovery reaches survive realistic detector effects at FCC-hh energies.
minor comments (2)
  1. [Figure 2] Figure 2: axis labels and legend entries for the anomalous contributions should be enlarged for readability; the current font size makes it difficult to distinguish the a_τ and d_τ curves.
  2. The manuscript would benefit from an explicit statement of the assumed integrated luminosity and the precise definition of the 95% C.L. interval (e.g., profile-likelihood or Bayesian) used to extract the limits.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for the careful reading of our manuscript and the constructive comments. We address each major comment below and have revised the manuscript to strengthen the presentation of our assumptions and results.

read point-by-point responses

  1. Referee: [§3] §3 (Analysis framework): The 95% C.L., 3σ and 5σ limits rest on generator-level kinematic cuts applied to leading-order γγ → τ⁺τ⁻ matrix elements computed in the equivalent-photon approximation. No full GEANT-level detector simulation, pile-up overlay, or data-driven background estimate is presented; if tau-ID efficiency or background rejection is overestimated by ~30%, the quoted sensitivities would shift by a comparable factor. This modeling choice is load-bearing for the central numerical claims.

    Authors: We agree that the projections rely on generator-level results within the equivalent-photon approximation at leading order. This is a standard approach for initial sensitivity studies at future facilities such as the FCC-hh, where a complete detector design and full simulation chain are not yet finalized. In the revised manuscript we have expanded Section 3 to explicitly state the assumed tau identification efficiency and background rejection factors, and we have added a quantitative discussion of how a 30% variation in these quantities would affect the quoted limits. We have also noted that a full GEANT-level study would be a natural follow-up once detector parameters are better defined. revision: partial

  2. Referee: [§4] §4 (Results): The paper states that γγ → τ⁺τ⁻ dominates after cuts, yet supplies no explicit cross-section ratios, rejection factors, or migration matrices for the distributions sensitive to d_τ. Without these, it is not possible to assess whether the claimed exclusion and discovery reaches survive realistic detector effects at FCC-hh energies.

    Authors: We have revised Section 4 to include explicit cross-section values before and after the kinematic selection, together with the resulting signal-to-background ratios. A new table summarizes the rejection power of each cut for the dominant background processes. Because the present analysis is performed at generator level, migration matrices are not provided; we have added a clarifying statement that such matrices would require a full detector simulation and that the current cuts have been chosen to keep migration small in the angular observables most sensitive to d_τ. These additions allow readers to evaluate the robustness of the projections under the stated assumptions. revision: yes

Circularity Check

0 steps flagged

No circularity: forward sensitivity projections from standard EPA and generator-level kinematics

full rationale

The paper computes tau-pair production cross sections in ultra-peripheral PbPb collisions via photon-photon fusion using the equivalent-photon approximation, modifies the γττ vertex by a_τ and d_τ, and extracts projected 95% CL exclusion limits plus 3σ/5σ sensitivities from expected event yields and kinematic distributions after generator-level cuts. These steps rely on external QED matrix elements, standard EPA formalism, and assumed FCC-hh luminosity and acceptance; the limits are not obtained by fitting parameters to the same data nor by any self-referential redefinition. No load-bearing self-citation chain or ansatz smuggling is required for the central result, which remains a conventional projection study.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

Based on abstract only; no explicit free parameters, axioms, or invented entities are identifiable from the provided text.

pith-pipeline@v0.9.0 · 5609 in / 1095 out tokens · 122898 ms · 2026-05-21T14:57:09.299459+00:00 · methodology

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Lean theorems connected to this paper

Citations machine-checked in the Pith Canon. Every link opens the source theorem in the public Lean library.

What do these tags mean?
matches
The paper's claim is directly supported by a theorem in the formal canon.
supports
The theorem supports part of the paper's argument, but the paper may add assumptions or extra steps.
extends
The paper goes beyond the formal theorem; the theorem is a base layer rather than the whole result.
uses
The paper appears to rely on the theorem as machinery.
contradicts
The paper's claim conflicts with a theorem or certificate in the canon.
unclear
Pith found a possible connection, but the passage is too broad, indirect, or ambiguous to say the theorem truly supports the claim.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Probing the Tau Anomalous Magnetic Moment at Colliders: From Ultra-Peripheral Collisions to the Precision Frontier

    hep-ph 2026-04 unverdicted novelty 2.0

    The paper reviews collider-based measurements of the tau anomalous magnetic moment, highlighting LHC ultra-peripheral collisions and projected sensitivities at future facilities like Belle II and FCC.

Reference graph

Works this paper leans on

88 extracted references · 88 canonical work pages · cited by 1 Pith paper · 34 internal anchors

  1. [1]

    Perl et al., Evidence for anomalous lepton production in e+e− an- nihilation, Phys

    M.L. Perl et al., Evidence for anomalous lepton production in e+e− an- nihilation, Phys. Rev. Lett. 35, 1489 (1975)

    work page 1975

  2. [2]

    M.L. Perl, The tau lepton and the search for new elementary parti- cle physics , Proceedings of the 5th International WEIN Symposium: A Conference on Physics Beyond the Standard Model (WIEN 98), Santa Fe, New Mexico, June 14-June 21 1998, pp. 360-381 [arXiv:he p- ph/9812400]

    work page arXiv 1998

  3. [3]

    Precision Tau Physics

    A. Pich, Precision tau physic , Prog. Part. Nucl. Phys. 75, 41 (2014) [arXiv:1310.7922]

    work page internal anchor Pith review Pith/arXiv arXiv 2014

  4. [4]

    Schwinger, On quantum electrodynamics and the magnetic moment of the electron , Phys

    J.S. Schwinger, On quantum electrodynamics and the magnetic moment of the electron , Phys. Rev. 73, 416 (1948)

    work page 1948

  5. [5]

    Hanneke, S.F

    D. Hanneke, S.F. Hoogerheide, and G. Gabrielse, Cavity control of a single-electron quantum cyclotron: measuring the electro n magnetic mo- ment, Phys. Rev. A 83, 052122 (2011) [arXiv:1009.4831]. 16

    work page arXiv 2011

  6. [6]

    Abiet al.(Muon g-2), Phys

    B. Abi et al. (Muon g-2 Collaboration), Measurement of the positive muon anomalous magnetic moment to 0.46 ppm , Phys. Rev. Lett. 126, 141801 (2021) [arXiv:2104.03281]

    work page arXiv 2021

  7. [7]

    Passera, Precise mass-dependent QED contributions to leptonic g- 2 at order α 2 and α 3, Phys

    M. Passera, Precise mass-dependent QED contributions to leptonic g- 2 at order α 2 and α 3, Phys. Rev. D 75, 013002 (2007) [arXiv:hep- ph/0606174]

    work page arXiv 2007

  8. [8]

    Theory of the tau lepton anomalous magnetic moment

    S. Eidelman and M. Passera, Theory of the τ lepton anomalous magnetic moment, Mod. Phys. Lett. A 22, 159 (2007) [arXiv:hep-ph/0701260]

    work page internal anchor Pith review Pith/arXiv arXiv 2007

  9. [10]

    Acciarri et al

    M. Acciarri et al. (L3 Collaboration), Measurement of the anomalous magnetic and electric dipole moments of the tau lepton , Phys. Lett. B 434, 169 (1998)

    work page 1998

  10. [11]

    An upper limit on the anomalous magnetic moment of the \tau lepton

    K. Ackerstaff et al. (OPAL Collaboration), An upper limit on the anoma- lous magnetic moment of the tau lepton , Phys. Lett. B 431, 188 (1998) [arXiv:hep-ex/9803020]

    work page internal anchor Pith review Pith/arXiv arXiv 1998

  11. [12]

    Study of Tau-pair Production in Photon-Photon Collisions at LEP and Limits on the Anomalous Electromagnetic Moments of the Tau Lepton

    J. Abdallah et al. (DELPHI Collaboration), Study of tau-pair production in photon-photon collisions at LEP and limits on the anomalo us elec- tromagnetic moments of the tau lepton , Eur. Phys. J. C 35, 159 (2004) [arXiv:hep-ex/0406010]

    work page internal anchor Pith review Pith/arXiv arXiv 2004

  12. [13]

    Albrecht et al

    H. Albrecht et al. (ARGUS Collaboration), A search for the elec- tric dipole moment of the tau lepton , Phys. Lett. B 485, 37 (2000) [arXiv:hep- ex/000403]

    work page 2000

  13. [14]

    Inami et al

    K. Inami et al. (Belle Collaboration), Search for the electric dipo le moment of the tau lepton, Phys. Lett. B 551, 16 (2003) [arXiv:hep- ex/0210066]

    work page arXiv 2003

  14. [15]

    Inami et al

    K. Inami et al. (Belle Collaboration), An improved search for the electric dipole moment of the τ lepton, JHEP 04, 110 (2022) [arXiv:2108.11543]. 17

    work page arXiv 2022

  15. [16]

    Aad et al

    G. Aad et al. (ATLAS Collaboration), Observation of the γγ → ττ pro- cess in Pb+Pb collisions and constraints on the τ-lepton anomalous mag- netic moment with the ATLAS detector , Phys. Rev. Lett. 131, 151802 (2023) [arXiv:2204.13478]

    work page arXiv 2023

  16. [17]

    Tumasyan et al

    A. Tumasyan et al. (CMS Collaboration), Observation of τ lepton pair production in ultraperipheral Pb-Pb collisions at √ sN N = 5 . 02 TeV, Phys. Rev. Lett. 131, 151803 (2023) [arXiv:2206.05192]

    work page arXiv 2023

  17. [18]

    Hayrapetyan et al

    A. Hayrapetyan et al. (CMS Collaboration), Observation of γγ → ττ in proton-proton collisions and limits on the anomalous ele ctromag- netic moments of the τ lepton,Rep. Prog. Phys. 87, 107801 (2024) [arXiv:2406.03975]

    work page arXiv 2024

  18. [19]

    Volkotrub, Tau anomalous magnetic moment measurement at AT- LAS and CMS , Acta Phys

    Y. Volkotrub, Tau anomalous magnetic moment measurement at AT- LAS and CMS , Acta Phys. Pol. B Proc. Suppl. 17, 5-A26 (2024)

    work page 2024

  19. [20]

    I. Neutelings, Measurement of the τ anomalous magnetic moment by the CMS experiment , Talk at the 42nd International Conference on High Energy Physics (ICHEP2024) 18-24 July 2024, Prague, Czech Rep ublic

    work page 2024

  20. [21]

    Clawson, Colliding light to measure tau g-2 , Talk at the 18th Interna- tional Workshop on tau lepton physics (TAU2025), 20-24 October 2025, Marseille, France

    S. Clawson, Colliding light to measure tau g-2 , Talk at the 18th Interna- tional Workshop on tau lepton physics (TAU2025), 20-24 October 2025, Marseille, France

    work page 2025

  21. [22]

    Christenson, J.W

    J.H. Christenson, J.W. Cronin, V.L. Fitch, and R. Turlay, Phys. R ev. Lett. 13, 138 (1964)

    work page 1964

  22. [23]

    Ellis, S

    J.R. Ellis, S. Ferrara, and D.V. Nanopoulos, CP Violation and Super- symmetry, Phys. Lett. B 114, 231 (1982)

    work page 1982

  23. [24]

    Weak Magnetic Dipole Moments in the MSSM

    B. de Carlos and J.M. Moreno, Weak magnetic dipole moments in the MSSM, Nucl. Phys. B 519, 101 (1998) [arXiv:hep-ph/9707487]

    work page internal anchor Pith review Pith/arXiv arXiv 1998

  24. [25]

    Dipole Moments in Supersymmetry

    J.I. Illana, Dipole moments in supersymmetry , Acta Phys. Polon. B 29, 2753 (1998) [arXiv:hep-ph/9807205]

    work page internal anchor Pith review Pith/arXiv arXiv 1998

  25. [26]

    Lepton Dipole Moments in Supersymmetric Low-Scale Seesaw Models

    A. Ilakovac, A. Pilaftsis and L. Popov, Lepton dipole moments in su- persymmetric low-scale seesaw models , Phys. Rev. D 89, 015001 (2014) [arXiv:1308.3633]. 18

    work page internal anchor Pith review Pith/arXiv arXiv 2014

  26. [27]

    Barr, A survey of a new class of models of CP-violation , Phys

    S.M. Barr, A survey of a new class of models of CP-violation , Phys. Rev. D 34, 156 (1986)

    work page 1986

  27. [28]

    Ma and A

    J.P. Ma and A. Brandenburg, CP violation and top quark decays , Z. Phys. C 56, 97 (1992)

    work page 1992

  28. [29]

    Large Tau and Tau Neutrino Electric Dipole Moments in Models with Vector Like Multiplets

    T. Ibrahim and P. Nath, Large tau and tau neutrino electric dipole mo- ments in models with vector like multiplets , Phys. Rev. D 81, 033007 (2010) [Erratum ibid. D 89, 119902 (2014)] [arXiv:1001.0231]

    work page internal anchor Pith review Pith/arXiv arXiv 2010

  29. [30]

    Silverman and G.L

    D.J. Silverman and G.L. Shaw, Limits on the composite structure of the τ lepton and quarks from anomalous magnetic moment measureme nts in e+e− annihilation, Phys. Rev. D 27, 1196 (1983)

    work page 1983

  30. [31]

    Goertz, Flavour observables and composite dynamics: leptons , Eur

    F. Goertz, Flavour observables and composite dynamics: leptons , Eur. Phys. J. Spec. Top., 231, 1287 (2022)

    work page 2022

  31. [32]

    Appelquist, M

    T. Appelquist, M. Piai, and R. Shrock, Lepton dipole moments in ex- tended technicolor models , Phys. Lett. B 593, 175 (2004) [arXiv:hep- ph/0401114]

    work page arXiv 2004

  32. [33]

    Electric Dipole moments of charged leptons and lepton flavor violating interactions in the general two Higgs Doublet model

    E.O. Iltan, Electric dipole moments of charged leptons and lepton flavor violating interactions in the general two Higgs doublet mod el, Phys. Rev. D 64, 013013 (2001) [arXiv:hep-ph/0101017]

    work page internal anchor Pith review Pith/arXiv arXiv 2001

  33. [34]

    Kaluza-Klein Theories and the Anomalous Magnetic Moment of the Muon

    X. Calmet and A. Neronov, Kaluza-Klein theories and the anoma- lous magnetic moment of the muon , Phys.Rev. D 65, 067702 (2002) [arXiv:hep-ph/0104278]

    work page internal anchor Pith review Pith/arXiv arXiv 2002

  34. [35]

    A Model of Lepton Masses from a Warped Extra Dimension

    C. Cs´ aki, C. Delaunay, C. Grojean, and Y. Grossman, A model of lepton masses from a warped extra dimension , J. High Energy Phys. 10, 055 (2008) [arXiv:0806.0356]

    work page internal anchor Pith review Pith/arXiv arXiv 2008

  35. [36]

    The effects of lepton KK modes on the lepton electric dipole moments in the Randall Sundrum scenario

    E.O. Iltan, The effects of lepton KK modes on the electric dipole mo- ments of the leptons in the Randall-Sundrum scenario , Eur. Phys. J. C 54, 583 (2008) [arXiv:0708.3765]

    work page internal anchor Pith review Pith/arXiv arXiv 2008

  36. [37]

    An A4 flavor model for quarks and leptons in warped geometry

    A. Kadosh and E. Pallante, An A4 flavor model for quarks and leptons in warped geometry , JHEP 08, 115 (2010) [arXiv:1004.0321]. 19

    work page internal anchor Pith review Pith/arXiv arXiv 2010

  37. [38]

    Effective CP-violating operators of the tau lepton and some of their phenomenologies

    T. Huang, J.M. Yang, B.-L. Young, and X. Zhang, Effective CP-violating operators of the tau lepton and some of their phenomenologie s, Phys. Rev. D 58, 073007 (1998) [arXiv:hep-ph/9803334]

    work page internal anchor Pith review Pith/arXiv arXiv 1998

  38. [39]

    Model independent bounds on the tau lepton electromagnetic and weak magnetic moments

    G.A. Gonz´ alez-Sprinberg, A. Santamaria, and J. Vidal, Model indepen- dent bounds on the tau lepton electromagnetic and weak magne tic mo- ments, Nucl. Phys. B 582, 3 (2000) [arXiv:hep-ph/0002203]

    work page internal anchor Pith review Pith/arXiv arXiv 2000

  39. [40]

    Tau anomalous magnetic moment form factor at Super B/Flavor factories

    J. Bernab´ eu, G.A. Gonz´ alez-Sprinberg, J. Papavassiliou, amd J. Vidal, Tau anomalous magnetic moment form factor at super B/flavor f acto- ries, Nucl. Phys. B 790, 160 (2008) [arXiv:0707.2496]

    work page internal anchor Pith review Pith/arXiv arXiv 2008

  40. [41]

    Possibility of Determining $\tau$ Lepton Electromagnetic Moments in ${\gamma\gamma \to \tau^{+}\tau^{-}}$ Process at the CERN-LHC

    S. Ata˘ g and A. Billur,Possibility of determining τ lepton electromagnetic moments in γγ → τ+τ− process at the CERN-LHC, JHEP 11, 60 (2010) [arXiv:1005.2841]

    work page internal anchor Pith review Pith/arXiv arXiv 2010

  41. [42]

    Peressutti and O.A

    J. Peressutti and O.A. Sampayo, Tau anomalous magnetic moment in γγ colliders, Phys. Rev. D 86, 035016 (2012)

    work page 2012

  42. [43]

    $\tau$ dipole moments via radiative leptonic $\tau$ decays

    S. Eidelman, D. Epifanov, M. Fael, L. Mercolli, and M. Passera, τ dipole moments via radiative leptonic τ decays, JHEP 03, 140 (2016) [arXiv:1601.07987]. M.A. Arroyo-Ure˜ na, G. Hernandez-Tom´ e, and G. Tavares-Vela sco, Anomalous magnetic and weak magnetic dipole moments of the τ lep- ton in the simplest little Higgs model , Eur. Phys. J. C 77, 227 (2017...

    work page internal anchor Pith review Pith/arXiv arXiv 2016

  43. [44]

    Analysis of the anomalous electromagnetic moments of the tau lepton in $\gamma p$ collisions at the LHC

    M. K¨ oksal, S.C. ˙Inan, A.A. Billur, M.K. Bahar, and Y. ¨Ozg¨ uven, Anal- ysis of the anomalous electromagnetic moments of the tau lepton in γp collisions at the LHC, Phys. Lett. B, 783, 375 (2018) [arXiv:1711.02405]

    work page internal anchor Pith review Pith/arXiv arXiv 2018

  44. [45]

    Feasibility of tau lepton electromagnetic dipole moments measurement using bent crystal at the LHC

    A.S. Fomin, A.Yu. Korchin, A. Stocchi, S. Barsuk, and P. Robbe, Fea- sibility of τ-lepton electromagnetic dipole moments measurement using bent crystal at the LHC , JHEP 03, 156 (2018) [arXiv:1810.06699]

    work page internal anchor Pith review Pith/arXiv arXiv 2018

  45. [46]

    Bernreuther, L

    W. Bernreuther, L. Chen, and O. Nachtmann, The electric dipole mo- ment of the tau lepton revisited , Phys. Rev. D 103, 096011 (2021) [arXiv:2101.08071]

    work page arXiv 2021

  46. [47]

    Haisch, L

    U. Haisch, L. Schnell, and J. Weiss, LHC tau-pair production constraints on aτ and dτ, SciPost Phys. 16, 048 (2024) [arXiv:2307.14133]. 20

    work page arXiv 2024

  47. [48]

    del Aguila, F

    F. del Aguila, F. Cornet, and J.I. Illana, The possibility of using a large heavy-ion collider for measuring the electromagnetic prop erties of the tau lepton , Phys. Lett. B 271, 256 (1991)

    work page 1991

  48. [49]

    Beresford and J

    L. Beresford and J. Liu, New physics and tau g-2 using LHC heavy ion collisions, Phys. Rev. D 102, 113008 (2020) [Erratum: Phys. Rev. D 106, 039902 (2022)] [arXiv:1908.05180]

    work page arXiv 2020

  49. [50]

    Dyndal, M

    M. Dyndal, M. K/suppress lusek-Gawenda, A. Szczurek and M. Schott,Anomalous electromagnetic moments of τ lepton in γγ → ττ reaction in Pb+Pb col- lisions at the LHC , Phys. Lett. B 809, 135682 (2020) [arXiv:2002.05503]

    work page arXiv 2020

  50. [51]

    B¨ uhler, N

    P. B¨ uhler, N. Burmasov, R. Laviˇ cka, and E. Kryshen, Feasibility study of tau-lepton anomalous magnetic moment measurements with ultra- peripheral collisions at the LHC , EPJ Web of Conf. 262, 01021 (2022)

    work page 2022

  51. [53]

    Verducci, C

    M. Verducci, C. Roda, V. Cavasinni, and N. Vignaroli, Study of the measurement of the tau lepton anomalous magnetic moment in high energy lead-lead collisions at the LHC , Phys. Rev. D 110, 052001 (2024) [arXiv:2307.15160]

    work page arXiv 2024

  52. [54]

    D.Y. Shao, B. Yan, S.-R. Yuan, and C. Zhang, Spin asymmetry and dipole moments in τ-pair production with ultraperipheral heavy ion collisions , Sci. China Phys. Mech. Astron. 67, 281062, (2024) [arXiv:2310.14153]

    work page arXiv 2024

  53. [55]

    Lavi˘ cka and P.A

    R. Lavi˘ cka and P.A. B¨ uhler,Measurement of the tau anomalous mag- netic moment using ultra-peripheral collisions with the AL ICE detector in Run 3 Pb-Pb data , Phys. Proc. Ultra-Peripheral Collisions 2, 010 (2025) pp. 1-5 [arXiv:2510.12661]

    work page arXiv 2025

  54. [56]

    Burmasov, E

    N. Burmasov, E. Kryshen, P. Buehler, and R. Laviˇ cka, Feasibility of tau g-2 measurements in ultra-peripheral collisions of heavy i ons, SciPost Phys. Proc. 16, 022 (2025) [arXiv:2203.00990]. 21

    work page arXiv 2025

  55. [57]

    Bernreuther, O

    W. Bernreuther, O. Nachtmann, and P. Overmann, CP-violating electric and weak dipole moments of the τ lepton from threshold to 500 GeV , Phys. Rev. D 48, 78 (1993)

    work page 1993

  56. [58]

    $\tau$ magnetic moment in a $\gamma \gamma$ collider

    J. Peressutti and O.A Sampayo, Tau anomalous magnetic moment in colliders, Phys. Rev. D 86, 035016 (2012) [arXiv:hep-ph/0111081]

    work page internal anchor Pith review Pith/arXiv arXiv 2012

  57. [59]

    Probe of electromagnetic moments of the tau lepton in gamma-gamma collisions at the CLIC

    A.A. Billur and M. K¨ oksal, Probe of electromagnetic moments of the tau lepton in gamma-gamma collisions at the CLIC , Phys. Rev. D 89, 037301 (2014) [arXiv:1306.5620]

    work page internal anchor Pith review Pith/arXiv arXiv 2014

  58. [60]

    Search for the anomalous electromagnetic moments of the tau lepton through electron-photon scattering at the CLIC

    Y. ¨Ozg¨ uven, A.A. Billur, S.C. ˙Inan, M.K. Bahar, and M. K¨ oksal, Search for the anomalous electromagnetic moments of tau lep ton through electron-photon scattering at CLIC , Nucl. Phys. B 923, 475 (2017) [arXiv:1609.08348]

    work page internal anchor Pith review Pith/arXiv arXiv 2017

  59. [61]

    Model-independent bounds probing on the electromagnetic dipole moments of the $\tau$-lepton at the CLIC

    M. K¨ oksal, A.A. Billur, A. Guti´ errez-Rodr ´ ıguez, and M. de los´Angeles Hern´ andez-Ru ´ ız.Model-independent bounds probing on the electromag- netic dipole moments of the τ-lepton at the CLIC , Phys. Rev. D 98, 015017 (2018) [arXiv:1804.02373 ]

    work page internal anchor Pith review Pith/arXiv arXiv 2018

  60. [62]

    Chen and Y

    X. Chen and Y. Wu, Search for the Electric Dipole Moment and anoma- lous magnetic moment of the tau lepton at tau factories , JHEP 10, 089 (2019) [arXiv:1803.00501]

    work page arXiv 2019

  61. [63]

    Tau-lepton Physics at the FCC-ee circular e$^+$e$^-$ Collider

    M. Dam, Tau-lepton physics at the FCC-ee circular e+e− collider, Sci- Post Phys. Proc. 1, 041 (2019) [arXiv:1811.09408]

    work page internal anchor Pith review Pith/arXiv arXiv 2019

  62. [64]

    de los ´Angeles Hern´ andez-Ru ´ ız, A.A

    M. de los ´Angeles Hern´ andez-Ru ´ ız, A.A. Billur, M. K¨ oksal, and A. Guti´ errez-Rodr ´ ıguez,Sensitivity on the electromagnetic dipole mo- ments of the tau-lepton at the CLIC , SciPost Phys. Proc. 1, 045 (2019)

    work page 2019

  63. [65]

    Levati, Probing the tau lepton magnetic moment at future lepton colliders, Nuovo Cim

    G. Levati, Probing the tau lepton magnetic moment at future lepton colliders, Nuovo Cim. 47 C , 88 (2024)

    work page 2024

  64. [66]

    Tran and Y

    H.M. Tran and Y. Kurihara, Tau g-2 at e−e+ colliders with momentum-dependent form factor , Eur. Phys. J. C 81, 108 (2021) [arXiv:2006.00660]

    work page arXiv 2021

  65. [67]

    The $\tau$ Magnetic Dipole Moment at Future Lepton Colliders

    J.N. Howard, A. Rajaraman, R. Riley, and T.M.P. Tait, The τ mag- netic dipole moment at future lepton colliders , LHEP 2, 5 (2019) [arXiv:1810.09570]. 22

    work page internal anchor Pith review Pith/arXiv arXiv 2019

  66. [68]

    Search for the electromagnetic moments of the $\tau$ lepton in photon-photon collisions at the LHeC and the FCC-he

    M. K¨ oksal, Search for the electromagnetic moments of the τ lepton in photon–photon collisions at the LHeC and the FCC-he , J. Phys. G: Nucl. Part. Phys. 46, 065003 (2019) [arXiv:1809.01963]

    work page internal anchor Pith review Pith/arXiv arXiv 2019

  67. [69]

    Feasibility at the LHC, FCC-he and CLIC for sensitivity estimates on anomalous $\tau$-lepton couplings

    A. Guti´ errez-Rodr ´ ıguez, M. K¨ oksal, A.A. Billur, and M.A. Hern´ andez- Ru ´ ız,Feasibility at the LHC, FCC-he and CLIC for sensitivity esti mates on anomalous electromagnetic couplings of the τ-lepton, Int. J. Theor. Phys. 61, 161 (2022) [arXiv:1903.04135]

    work page internal anchor Pith review Pith/arXiv arXiv 2022

  68. [70]

    The $\mu^+\mu^-$ collider to sensitivity estimates on the magnetic and electric dipole moments of the tau-lepton

    M. K¨ oksal, A. A. Billur, A. Guti´ errez-Rodriguez, and M. A. Hern´ andez- Ru ´ ız,The µ +µ − collider to sensitivity estimates on the magnetic and electric dipole moments of the tau-lepton , Int. J. Mod. Phys. A 34, 1950076 (2019) [arXiv:1811.01188]

    work page internal anchor Pith review Pith/arXiv arXiv 2019

  69. [71]

    Wang, Probingτ lepton dipole moments at future muon colliders , 42nd International Conference on High Energy Physics (ICHEP20 24) 18-24 July 2024, Prague, Czech Republic

    Z.-Q. Wang, Probingτ lepton dipole moments at future muon colliders , 42nd International Conference on High Energy Physics (ICHEP20 24) 18-24 July 2024, Prague, Czech Republic

    work page 2024

  70. [72]

    Denizli, A

    H. Denizli, A. Senol, and M. K¨ oksal, Constraints on τ electromagnetic moments via tau pair production at the muon colliders , Chin. J. Phys. 95, 1250 (2025) [arXiv:2408.16106]

    work page arXiv 2025

  71. [73]

    Shokr, Measurement of tau anomalous magnetic moment g-2 at CMS, Talk at the 18th International Workshop on Tau Lepton Physics (TAU2025), 20-24 October 2025, Marseille, France

    E. Shokr, Measurement of tau anomalous magnetic moment g-2 at CMS, Talk at the 18th International Workshop on Tau Lepton Physics (TAU2025), 20-24 October 2025, Marseille, France

    work page 2025

  72. [74]

    J.A. Hallford, Tau-lepton pair production via di-photon fusion in ultra- peripheral heavy-ion collisions with the ATLAS detector , Talk at the 18th International Workshop on Tau Lepton Physics (TAU2025), 20-24 October 2025, Marseille, France

    work page 2025

  73. [75]

    Gogniat, Extraction of the tau dipole moments from e+e− → τ+τ− , Talk at the 18th International Workshop on Tau Lepton Physics (TAU2025), 20-24 October 2025, Marseille, France

    J. Gogniat, Extraction of the tau dipole moments from e+e− → τ+τ− , Talk at the 18th International Workshop on Tau Lepton Physics (TAU2025), 20-24 October 2025, Marseille, France

    work page 2025

  74. [76]

    Abada et al

    A. Abada et al. (FCC collaboration), FCC-hh: The Hadron Collider. Future Circular Collider Conceptual Design Report Volume 3, Eur. Phys. J. Special Topics 228, 755 (2019)

    work page 2019

  75. [77]

    Abada et al

    A. Abada et al. FCC Physics Opportunities: Future Circular Collider Conceptual Design Report Volume 1 , Eur. Phys. J. C, 79, 474 (2019). 23

    work page 2019

  76. [78]

    Budnev, I.F

    V.M. Budnev, I.F. Ginzburg, G.V. Meledin, and V.G. Serbo, The two- photon particle production mechanism. Physical problems. Applications. Equivalent photon approximation , Phys. Rep. 15, 181 (1975)

    work page 1975

  77. [79]

    Jackson, Classical Electrodynamics, J

    J.D. Jackson, Classical Electrodynamics, J. Wiley & Sons, Inc., N.Y., 1962

    work page 1962

  78. [80]

    Bertulani and G

    C.A. Bertulani and G. Baur, Electromagnetic processes in relativistic heavy ion collisions , Phys. Rep. 163, 299 (1988)

    work page 1988

  79. [81]

    The Physics of Ultraperipheral Collisions at the LHC

    A.J. Baltz et al., The physics of ultraperipheral collisions at the LHC , Phys. Rep. 458, 1 (2008) [arXiv:0706.3356]

    work page internal anchor Pith review Pith/arXiv arXiv 2008

  80. [82]

    Grimus, CP violating phenomena and theoretical results , Fortschr

    W. Grimus, CP violating phenomena and theoretical results , Fortschr. Phys. 36, 201 (1988)

    work page 1988

Showing first 80 references.