Tau Polarization in Tau-Neutrino Nucleon Scattering

Abstract

We investigate the spin polarization of τ^{\pm} leptons produced in ν_τ and \barν_τ nucleon scattering via charged currents. Quasi-elastic scattering, Δresonance production and deep inelastic scattering processes are studied. The polarization information is essential for measuring the τ^{\pm} appearance rate in long baseline neutrino oscillation experiments, because the decay particle distributions depend crucially on the τ^{\pm} spin. In this article, we calculate the spin density matrix of each process and estimate the spin polarization vector in medium and high neutrino energy interactions. We find that the produced τ^{\pm}'s have high degree of polarization, and their spin direction depends non-trivially on the energy and the scattering angle of τ^{\pm} in the laboratory frame.

arXiv comment23 pages, 35 figures; compile errors corrected; notation errors in Eq.(30) and (31) corrected, typo error in Eq.(40) corrected, references and comments in footnote added

References in corpus (13)

• Evidence for oscillation of atmospheric neutrinos
• Limits on Neutrino Oscillations from the CHOOZ Experiment
• Initial Results from the CHOOZ Long Baseline Reactor Neutrino Oscillation Experiment
• Tau Neutrinos Favored over Sterile Neutrinos in Atmospheric Muon Neutrino Oscillations
• MRST2001: partons and alpha_S from precise deep inelastic scattering and Tevatron jet data
• Neutrino Interactions In Oscillation Experiments
• Tau neutrino deep inelastic charged current interactions
• Charged current weak electroproduction of Delta resonance
• Single Pion Production in Neutrino Reactions and Estimates for Charge-Exchange Effects
• Prospects of Very Long Base-Line Neutrino Oscillation Experiments with the KEK-JAERI High Intensity Proton Accelerator
• Measuring the CP-violating phase by a long base-line neutrino experiment with Hyper-Kamiokande
• ICANOE and OPERA experiments at the LNGS/CNGS
• Tau Appearance In Atmospheric Neutrino Interactions

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