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Title: Measurement of Neutral Current Neutral Pion Production on Carbon in a Few-GeV Neutrino Beam

Abstract

Understanding of the π 0 production via neutrino-nucleus neutral current interaction in the neutrino energy region of a few GeV is essential for the neutrino oscillation experiments. In this thesis, we present a study of neutral current π 0 production from muon neutrinos scattering on a polystyrene (C 8H 8) target in the SciBooNE experiment. All neutrino beam data corresponding to 0.99 × 10 20 protons on target have been analyzed. We have measured the cross section ratio of the neutral current π 0 production to the total charge current interaction and the π 0 kinematic distribution such as momentum and direction. We obtain [7.7 ± 0.5(stat.) ± 0.5(sys.)] × 10 -2 as the ratio of the neutral current neutral pion production to total charged current cross section; the mean energy of neutrinos producing detected neutral pions is 1.1 GeV. The result agrees with the Rein- Sehgal model, which is generally used for the Monte Carlo simulation by many neutrino oscillation experiments. We achieve less than 10 % uncertainty which is required for the next generation search for ν µ → ν e oscillation. The spectrum shape of the π 0 momentum and the distribution of the π0 emitted anglemore » agree with the prediction, which means that not only the Rein-Sehgal model but also the intra-nuclear interaction models describe our data well. We also measure the ratio of the neutral current coherent pion production to total charged current cross section to be (1.17 ± 0.23 ) × 10 -2 based on the Rein and Sehgal model. The result gives the evidence for non-zero coherent pion production via neutral current interaction at the mean neutrino energy of 1.0 GeV.« less

Authors:
 [1]
  1. Kyoto Univ. (Japan)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1249474
Report Number(s):
FERMILAB-THESIS-2010-12
853917
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Thesis/Dissertation
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Kurimoto, Yoshinori. Measurement of Neutral Current Neutral Pion Production on Carbon in a Few-GeV Neutrino Beam. United States: N. p., 2010. Web. doi:10.2172/1249474.
Kurimoto, Yoshinori. Measurement of Neutral Current Neutral Pion Production on Carbon in a Few-GeV Neutrino Beam. United States. https://doi.org/10.2172/1249474
Kurimoto, Yoshinori. Fri . "Measurement of Neutral Current Neutral Pion Production on Carbon in a Few-GeV Neutrino Beam". United States. https://doi.org/10.2172/1249474. https://www.osti.gov/servlets/purl/1249474.
@article{osti_1249474,
title = {Measurement of Neutral Current Neutral Pion Production on Carbon in a Few-GeV Neutrino Beam},
author = {Kurimoto, Yoshinori},
abstractNote = {Understanding of the π0 production via neutrino-nucleus neutral current interaction in the neutrino energy region of a few GeV is essential for the neutrino oscillation experiments. In this thesis, we present a study of neutral current π0 production from muon neutrinos scattering on a polystyrene (C8H8) target in the SciBooNE experiment. All neutrino beam data corresponding to 0.99 × 1020 protons on target have been analyzed. We have measured the cross section ratio of the neutral current π0 production to the total charge current interaction and the π0 kinematic distribution such as momentum and direction. We obtain [7.7 ± 0.5(stat.) ± 0.5(sys.)] × 10-2 as the ratio of the neutral current neutral pion production to total charged current cross section; the mean energy of neutrinos producing detected neutral pions is 1.1 GeV. The result agrees with the Rein- Sehgal model, which is generally used for the Monte Carlo simulation by many neutrino oscillation experiments. We achieve less than 10 % uncertainty which is required for the next generation search for νµ → νe oscillation. The spectrum shape of the π0 momentum and the distribution of the π0 emitted angle agree with the prediction, which means that not only the Rein-Sehgal model but also the intra-nuclear interaction models describe our data well. We also measure the ratio of the neutral current coherent pion production to total charged current cross section to be (1.17 ± 0.23 ) × 10-2 based on the Rein and Sehgal model. The result gives the evidence for non-zero coherent pion production via neutral current interaction at the mean neutrino energy of 1.0 GeV.},
doi = {10.2172/1249474},
url = {https://www.osti.gov/biblio/1249474}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {1}
}

Thesis/Dissertation:
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