Polarization of τ in quasielastic (anti)neutrino scattering: The role of spectral functions

Sobczyk, J. E.; Rocco, N.; Nieves, J.

doi:10.1103/PhysRevC.100.035501

Title: Polarization of $τ$ in quasielastic (anti)neutrino scattering: The role of spectral functions

Journal Article · 02 September 2019 · Physical Review C

DOI: https://doi.org/10.1103/PhysRevC.100.035501 · OSTI ID:1579328

Sobczyk, J. E. ^[1]; Rocco, N. ^[2];

^[1]

Instituto de Física Corpuscular (IFIC), Valencia (Spain)
Argonne National Lab. (ANL), Argonne, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

We present a study of the $τ$ polarization in charged-current quasielastic (anti)neutrino-nucleus scattering. The spectral function formalism is used to compute the differential cross section and the polarization components for several kinematical setups, relevant for neutrino-oscillation experiments. Here, the effects of the nuclear corrections in these observables are investigated by comparing the results obtained using two different realistic spectral functions, with those deduced from the relativistic global Fermi gas model, where only statistical correlations are accounted for. We show that the spectral functions, although they play an important role when predicting the differential cross sections, produce much less visible effects on the polarization components of the outgoing $τ$ .

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: European Union, Horizon 2020 Research and Innovation Programmer; USDOE; USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: AC02-06CH11357; AC02-07CH11359

OSTI ID:: 1579328

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 3 Vol. 100; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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