The Decay of Tau Leptons Produced in Neutrino-Nucleon Scatterings

Abstract

Energy and angular distributions of the tau decay products in the CERN-to-Gran Sasso ${\nu }_{\tau }$ appearance experiments are studied for the decay modes $\tau \to \pi \nu$ and $\tau \to l\bar{\nu }\nu$ (l=e or mu). We find that the decay particle distributions in the laboratory frame are significantly affected by the tau polarization. Rather strong azimuthal asymmetry of $p{i}^{-}$ and $l^{-}$ about the tau momentum axis is predicted, which may have observable consequences even at small statistics experiments.

arXiv comment14 pages, 6 eps figures; comments on Fig. 1 added, Fig. 4 improved to see clearly

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Cited by in corpus (7)

• Discovery of tau neutrino appearance in the CNGS neutrino beam with the OPERA experiment
• Acceptances for Space-Based and Ground-Based Fluorescence Detectors, and Inference of the Neutrino-Nucleon Cross-Section above 10^19 eV
• Tau neutrinos at DUNE: new strategies, new opportunities
• Effect of tau neutrino contribution to muon signals at neutrino factories
• Quasielastic production of polarized $\tau$ leptons in ${\nu }_{\tau }$ and ${\bar{\nu }}_{\tau }$ scattering from nucleons
• Axial and pseudoscalar form factors from charged current quasielastic neutrino-nucleon scattering
• Tau polarization effects in the CNGS tau-neutrino appearance experiments