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Fu, J; Giorgi, M A; Henry, L; Marangotto, D; Vidal, F Martínez; Merli, A; Neri, N; Vidal, J Ruiz
Physical review letters, 2019-Jul-03, Letnik: 123, Številka: 1Journal Article
A novel method for the direct measurement of the elusive magnetic and electric dipole moments of the τ lepton is presented. The experimental approach relies on the production of τ^{+} leptons from D_{s}^{+}→τ^{+}ν_{τ} decays, originating in fixed-target collisions at the LHC. A sample of polarized τ^{+} leptons is kinematically selected and subsequently channeled in a bent crystal. The magnetic and electric dipole moments of the τ^{+} 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.
