Novel method for the direct measurement of the tau lepton dipole moments

Abstract

A novel method for the direct measurement of the elusive magnetic and electric dipole moments of the tau lepton is presented. The experimental approach relies on the production of tau+ leptons from Ds+ -> tau+ nu_tau decays, originated in fixed-target collisions at the LHC. A sample of polarized tau+ leptons is kinematically selected and subsequently channeled in a bent crystal. The magnetic and electric dipole moments of the tau+ lepton are measured by determining the rotation of the spin-polarization vector induced by the intense electromagnetic field between crystal atomic planes. The experimental technique is discussed along with the expected sensitivities.

arXiv comment4 pages, 4 figures, 2 pages supplemental material. Accepted by Phys.Rev.Lett

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Cited by in corpus (20)

• Physics Beyond Colliders at CERN: Beyond the Standard Model Working Group Report
• Anomalous electromagnetic moments of $\tau$ lepton in $\gamma \gamma \to {\tau }^{+}{\tau }^{-}$ reaction in Pb+Pb collisions at the LHC
• New physics and tau $g-2$ using LHC heavy ion collisions
• Towards testing the magnetic moment of the tau at one part per million
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• Non-perturbative renormalization scheme for the CP-odd three-gluon operator
• Silicon crystals for steering of high-intensity particle beams at ultra-high energy accelerators
• Interference Resurrection of the $\tau$ Dipole through Quantum Tomography
• Electromagnetic dipole moment and time reversal invariance violating interactions for high energy short-lived particles in bent and straight crystals at Large Hadron Collider
• Strategy to measure tau $g-2$ via photon fusion in LHC proton collisions
• Spin correlations in $\tau$-lepton pair production due to anomalous magnetic and electric dipole moments
• Tau $g-2$ at $e^{-}{e}^{+}$ colliders with momentum dependent form factor
• Possibility to make a beam of tau-leptons and charmed particles by a channeling crystal
• Improved experimental layout for dipole moment measurements at the LHC
• Light new physics and the $\tau$ lepton dipole moments: prospects at Belle II
• Double-lens technique for efficient capture of short-lived particles by a crystal
• Relativistic particle incoherent scattering by the nuclei of crystal plane atoms
• Electromagnetic dipole, quadrupole moments and parity and time reversal invariance interactions of ${\Omega }^{\pm }$ baryons in bent and straight crystals
• Linearly Polarized Photon Fusion as a Precision Probe of the Tau Lepton Dipole Moments at Lepton Colliders