6/27/2023 0 Comments Tau lepton mass![]() Vidal, Tau spin correlations and the anomalous magnetic moment, JHEP 01 (2009) 062. Vidal, Tau anomalous magnetic moment form-factor at super B/flavor factories, Nucl. Vidal, CP violation and electric-dipole-moment at low energy tau production with polarized electrons, Nucl. Vidal, CP violation and electric-dipole-moment at low energy tau-pair production, Nucl. Stahl, CP violation in the production of τ leptons at TESLA with beam polarization, Eur. Rindani, Measurement of the tau electric dipole moment using longitudinal polarization of e e − beams, Phys. ĭELPHI collaboration, Study of tau-pair production in photon-photon collisions at LEP and limits on the anomalous electromagnetic moments of the tau lepton, Eur. īelle collaboration, Search for the electric dipole moment of the tau lepton, Phys. Abe et al., A New Approach for Measuring the Muon Anomalous Magnetic Moment and Electric Dipole Moment, Prog. Muon g − 2 collaboration, The Muon g − 2 experiment at Fermilab, EPJ Web Conf. Muon g − 2 collaboration, Muon ( g − 2) Technical Design Report, arXiv:1501.06858. Blum et al., The Muon ( g − 2) Theory Value: Present and Future, arXiv:1311.2198. Roberts, Muon ( g − 2) : Experiment and theory, Rept. Muon g − 2 collaboration, Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL, Phys. ĪCME collaboration, Improved limit on the electric dipole moment of the electron, Nature 562 (2018) 355. ĪCME collaboration, Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron, Science 343 (2014) 269. Passera, τ dipole moments via radiative leptonic τ decays, JHEP 03 (2016) 140. Popov, Lepton Dipole Moments in Supersymmetric Low-Scale Seesaw Models, Phys. ![]() Nath, Large Tau and Tau Neutrino Electric Dipole Moments in Models with Vector Like Multiplets, Phys. Nath, An MSSM Extension with a Mirror Fourth Generation, Neutrino Magnetic Moments and LHC Signatures, Phys. Shrock, Lepton dipole moments in extended technicolor models, Phys. Kubota, Linear programming analysis of the R-parity violation within EDM-constraints, JHEP 12 (2014) 110. Yan, The study of lepton EDM in CP-violating BLMSSM, JHEP 07 (2015) 124. The method in this work offers a new opportunity to search for BSM at current and future tau factories with high precision. It can also constrain models containing a light scalar with mass at O(1 GeV), which can explain the current muon g-2 anomaly as well. The new precision can effectively constrain BSM models with heavy mirror neutrinos. It is estimated that with 50 ab −1 of data to be delivered by the Belle-II experiment, a tau EDM search with a 1- σ level precision of \( \left| \) (1.5% of the SM prediction), can be expected when systematics are not considered. With all final state particle momenta available, observables based on matrix elements and sensitive to BSM are calculated. A new method to ap- proximately reconstruct the neutrinos from the hadronic decays of τ − τ pairs produced at e − e tau factories is proposed. It is generally believed that the tau lepton couples more strongly to BSM due to its large mass, and can be searched for at collider experiments. Precise measurement of the Electric Dipole Moment (EDM) and anomalous magnetic moment ( g-2) of particles are important tests of Beyond Standard Model (BSM) physics.
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