TY - JOUR
T1 - Study of tau-neutrino production at CERN SPS
AU - DsTau Collaboration
AU - Ariga, Tomoko
N1 - Publisher Copyright:
© 2018 Copyright owned by the author(s) under the terms of the Creative Commons.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019
Y1 - 2019
N2 - Lepton universality in tau-neutrino (ντ) scattering has been poorly tested. More precise measurement of the ντ cross section would enable a search for new physics effects in ντ-nucleon CC interactions. Such measurement also has practical importance for next-generation neutrino oscillation experiments and astrophysical ντ observations. The DsTau project has been proposed at CERN SPS to study tau-neutrino production with the aim of providing important data for future ντ measurements. For ντ cross section measurements, the practical method of producing an artificial ντ beam employs the sequential decay of Ds mesons produced in high-energy proton interactions. However, there has been no experimental measurement of the Ds differential production cross section in fixed-target experiments using proton beams, which leads to a large systematic uncertainty on the ντ flux estimation. The DsTau project aims to reduce this uncertainty in the current cross section measurement from about 50% to 10% by measuring the Ds differential production cross section. For this purpose, emulsion detectors with a 50-nm spatial resolution will allow the detection of Ds → τ → X double kinks in a few mm range. Results from the beam tests conducted in 2016-2017 are presented together with a prospect for the pilot run in 2018 and the physics run in 2021.
AB - Lepton universality in tau-neutrino (ντ) scattering has been poorly tested. More precise measurement of the ντ cross section would enable a search for new physics effects in ντ-nucleon CC interactions. Such measurement also has practical importance for next-generation neutrino oscillation experiments and astrophysical ντ observations. The DsTau project has been proposed at CERN SPS to study tau-neutrino production with the aim of providing important data for future ντ measurements. For ντ cross section measurements, the practical method of producing an artificial ντ beam employs the sequential decay of Ds mesons produced in high-energy proton interactions. However, there has been no experimental measurement of the Ds differential production cross section in fixed-target experiments using proton beams, which leads to a large systematic uncertainty on the ντ flux estimation. The DsTau project aims to reduce this uncertainty in the current cross section measurement from about 50% to 10% by measuring the Ds differential production cross section. For this purpose, emulsion detectors with a 50-nm spatial resolution will allow the detection of Ds → τ → X double kinks in a few mm range. Results from the beam tests conducted in 2016-2017 are presented together with a prospect for the pilot run in 2018 and the physics run in 2021.
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M3 - Conference article
AN - SCOPUS:85084111012
VL - 340
JO - Proceedings of Science
JF - Proceedings of Science
SN - 1824-8039
M1 - 240
T2 - 39th International Conference on High Energy Physics, ICHEP 2018
Y2 - 4 July 2018 through 11 July 2018
ER -