A Study of Charged Current Single Charged Pion Productions on Carbon in a Few-GeV Neutrino Beam

doi:https://doi.org/10.2172/947207

Title: A Study of Charged Current Single Charged Pion Productions on Carbon in a Few-GeV Neutrino Beam

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Abstract

Understanding single charged pion production via neutrino-nucleus charged current interaction in the neutrino energy region of a few GeV is essential for future neutrino oscillation experiments since this process is a dominant background for v _μ → v _x oscillation measurements. There are two contributions to this process: single pion production via baryonic resonance (v _μN → μ ^- Nπ ⁺) and coherent pion production interacting with the entire nucleus (v _μA → μ ^- Aπ ⁺), where N is nucleon in the nucleus and A is the nucleus. The purpose of the study presented in this thesis is a precise measurement of charged current single charged pion productions, resonant and coherent pion productions, with a good final state separation in the neutrino energy region of a few GeV. In this thesis, we focus on the study of charged current coherent pion production from muon neutrinos scattering on carbon, v _μ ¹²C → μ ^-12Cπ ⁺, in the SciBooNE experiment. This is motivated by the fact that without measuring this component first, the precise determination of resonant pion production cross section can not be achieved since the contribution of coherent pion production in the region of small muon scattering anglemore »« less

Authors:

Hiraide, Katsuki ^[1]

Kyoto Univ. (Japan)

Publication Date:: 2009-01-01

Research Org.:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 947207

Report Number(s):: FERMILAB-THESIS-2009-02
TRN: US0901355

DOE Contract Number:: AC02-07CH11359

Resource Type:: Thesis/Dissertation

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANTINEUTRINO BEAMS; AXIAL-VECTOR CURRENTS; CARBON; CHARGED CURRENTS; CROSS SECTIONS; MUON NEUTRINOS; MUONS; NEUTRINO BEAMS; NEUTRINO OSCILLATION; NEUTRINOS; NUCLEONS; OSCILLATIONS; PHYSICS; PIONS; PROTONS; RESONANCE; SCATTERING; TARGETS; Experiment-HEP

Citation Formats


                    Hiraide, Katsuki. A Study of Charged Current Single Charged Pion Productions on Carbon in a Few-GeV Neutrino Beam.  United States: N. p., 2009. 
        Web.  doi:10.2172/947207.

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                    Hiraide, Katsuki. A Study of Charged Current Single Charged Pion Productions on Carbon in a Few-GeV Neutrino Beam.  United States.  https://doi.org/10.2172/947207

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                    Hiraide, Katsuki. Thu .  
        "A Study of Charged Current Single Charged Pion Productions on Carbon in a Few-GeV Neutrino Beam".  United States.  https://doi.org/10.2172/947207.  https://www.osti.gov/servlets/purl/947207.

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@article{osti_947207,

  title        = {A Study of Charged Current Single Charged Pion Productions on Carbon in a Few-GeV Neutrino Beam},

  author       = {Hiraide, Katsuki},

  abstractNote = {Understanding single charged pion production via neutrino-nucleus charged current interaction in the neutrino energy region of a few GeV is essential for future neutrino oscillation experiments since this process is a dominant background for vμ → vx oscillation measurements. There are two contributions to this process: single pion production via baryonic resonance (vμN → μ- Nπ+) and coherent pion production interacting with the entire nucleus (vμA → μ- Aπ+), where N is nucleon in the nucleus and A is the nucleus. The purpose of the study presented in this thesis is a precise measurement of charged current single charged pion productions, resonant and coherent pion productions, with a good final state separation in the neutrino energy region of a few GeV. In this thesis, we focus on the study of charged current coherent pion production from muon neutrinos scattering on carbon, vμ 12C → μ-12Cπ+, in the SciBooNE experiment. This is motivated by the fact that without measuring this component first, the precise determination of resonant pion production cross section can not be achieved since the contribution of coherent pion production in the region of small muon scattering angle is not small. Furthermore, the coherent process is particularly interesting because it is deeply rooted in fundamental physics via Adler's partially conserved axial-vector current theorem. We took data from June 2007 until August 2008, in both the neutrino and antineutrino beam. In total, 2.52 x 1020 protons on target were collected. We have performed a search for charged current coherent pion production by using SciBooNE's full neutrino data set, corresponding to 0.99 x 1020 protons on target. No evidence for coherent pion production is observed. We set 90% confidence level upper limits on the cross section ratio of charged current coherent pion production to the total charged current cross section at 0.67 x 10-2 at mean neutrino energy 1.1 GeV and 1.36 x 10-2 at mean neutrino energy 2.2 GeV. We reveal that the Rein-Sehgal model widely used in neutrino oscillation experiments breaks down at the neutrino energy region of a few GeV. This creates active controversies on the model of coherent pion production, and the understanding of coherent pion production is being progressed. In addition, future prospects of measurements of charged current single charged pion production in SciBooNE are discussed.},

  doi          = {10.2172/947207},

  url          = {https://www.osti.gov/biblio/947207},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2009},

  month        = {1}

}

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