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

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arxiv hep-ph/0002203 v2 pith:MJKV2GVG submitted 2000-02-18 hep-ph

classification hep-ph
keywords momentselectromagneticleptonmodelboundsdataindependentlep2
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

Using LEP1, SLD and LEP2 data, for tau lepton production, and data from CDF, D0 and LEP2, for W decays into tau leptons, we set model independent limits on non-standard electromagnetic and weak magnetic moments of the tau lepton. The most general effective Lagrangian giving rise to tau moments is used without further assumptions. Precise bounds ($2\sigma$) on the non-standard model contributions to tau electromagnetic ($-0.007<a_\gamma< 0.005$), tau Z-magnetic ($-0.0024 <a_Z< 0.0025$) and tau W-magnetic ($-0.003 < \kappa^W < 0.004$) dipole moments are set from the analysis.

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Forward citations

Cited by 3 Pith papers

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

  1. Towards testing $(g-2)_\tau$ in $e^+e^-\to\tau^+\tau^-$: radiative corrections and projections for Belle II

    hep-ph 2025-05 conditional novelty 7.0 of 10

    A complete one-loop QED calculation for polarized e+e- to tau+tau- is implemented in the McMule Monte-Carlo code, showing that Belle II with a polarized beam could test the tau anomalous magnetic moment at the 10^-5 level.

  2. Current and future constraints on heavy New Physics from $\tau$ weak dipole moments

    hep-ph 2026-06 unverdicted novelty 5.0 of 10

    Tau weak dipole moments already rank among the leading probes of tau dipole operators and will become dominant at FCC-ee and HL-LHC.

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

    hep-ph 2026-01 unverdicted novelty 3.0 of 10

    Obtains 95% CL exclusion and 3σ/5σ sensitivity limits on a_τ and d_τ from PbPb collisions at FCC-hh with comparisons to other future colliders.

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