Polarization Transfer in Weak Pion Production off the Nucleon

Abstract

Polarization transfer (PT) observables in the single pion production induced by the charged current interaction of the neutrino with the nucleon are examined. The polarization components of the final nucleon and the charged lepton are calculated within two models for the pion production. The predictions are made for neutrino energy of the order of 1~GeV as well as for the T2K energy distribution. It is demonstrated that the PT observables, the degree of polarization and the polarization components of outgoing fermions, are sensitive on assumptions about the nonresonant background model. In particular it is shown that the normal components of the polarization of the outgoing nucleon and the lepton are determined by the interference between the resonant (RES) and nonresonant (NB) amplitudes. Moreover the sign of the normal component of the polarization of the charged lepton is fixed by the relative sign between the RES and the NB amplitudes.

arXiv comment20 pages, 15 figures: 4 new figures, one new reference and two corrections in references

References in corpus (31)

• The T2K Experiment
• A Search for Electron Neutrino Appearance at the Delta m**2 ~ 1 eV**2 Scale
• The T2K Neutrino Flux Prediction
• Design, Calibration, and Performance of the MINERvA Detector
• Weak Pion Production off the Nucleon
• Electron- and neutrino-nucleus scattering from the quasielastic to the resonance region
• Progress and open questions in the physics of neutrino cross sections
• Two-photon exchange in elastic electron-proton scattering
• Neutrino Interactions with Nucleons and Nuclei: Importance for Long-Baseline Experiments
• Dynamical coupled-channels model for neutrino-induced meson productions in resonance region
• N-Delta(1232) axial form factors from weak pion production
• Tau Polarization in Tau-Neutrino Nucleon Scattering
• Lepton Polarization in Neutrino-Nucleon Interactions
• One pion production in neutrino reactions: including non-resonant background
• Form Factors in the Quark Resonance Model
• Watson's theorem and the $N\Delta (1232)$ axial transition
• Measurement of ${\nu }_{\mu }$ charged-current single ${\pi }^0$ production on hydrocarbon in the few-GeV region using MINERvA
• Neutrinoproduction of Photons and Pions From Nucleons in a Chiral Effective Field Theory for Nuclei
• Electroweak single-pion production off the nucleon: from threshold to high invariant masses
• Incoherent Pion Production in Neutrino - Deuteron Reactions
• Weak charged and neutral current induced one pion production off the nucleon
• Electroweak Form Factors of the $\Delta$(1232) Resonance
• Neutrino-induced one-pion production revisited: the ${\nu }_{\mu }n\to {\mu }^{-}n{\pi }^{+}$ channel
• Tau polarization in quasielastic charged-current neutrino(antineutrino)-nucleus scattering
• Polarization of the final nucleon in quasi-elastic neutrino scattering and the axial form factor of the nucleon
• On the polarization of the final nucleon in NC elastic ν_μ(\barν_μ) - N scattering
• Quasielastic production of polarized hyperons in antineutrino--nucleon reactions
• Tau lepton polarization in quasielastic neutrino-nucleon scattering
• Weak quasielastic electroproduction of hyperons with polarization observables
• Radiative Corrections to Elastic Electron-Proton Scattering for Polarized Electrons
• Can One Distinguish Tau Neutrinos from Antineutrinos in Neutral-Current Pion Production Processes?

Cited by in corpus (5)

• Second class currents and T violation in quasielastic neutrino and antineutrino scattering from nucleons
• Quasielastic production of polarized $\tau$ leptons in ${\nu }_{\tau }$ and ${\bar{\nu }}_{\tau }$ scattering from nucleons
• Spin asymmetries in quasielastic charged current neutrino-nucleon scattering
• Spin asymmetry in single pion production induced by weak interactions of neutrinos with polarized nucleons
• Model dependence of the polarization asymmetries in weak pion production off the nucleon