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Title: Letter of Intent to Build a MiniBooNE Near Detector: BooNE

Abstract

There is accumulating evidence for a difference between neutrino and antineutrino oscillations at the {approx}1 eV{sup 2} scale. The MiniBooNE experiment observes an unexplained excess of electron-like events at low energies in neutrino mode, which may be due, for example, to either a neutral current radiative interaction, sterile neutrino decay, or to neutrino oscillations involving sterile neutrinos and which may be related to the LSND signal. No excess of electron-like events (-0.5 {+-} 7.8 {+-} 8.7), however, is observed so far at low energies in antineutrino mode. Furthermore, global 3+1 and 3+2 sterile neutrino fits to the world neutrino and antineutrino data suggest a difference between neutrinos and antineutrinos with significant (sin{sup 2} 2{theta}{sub {mu}{mu}} {approx} 35%) {bar {nu}}{sub {mu}} disappearance. In order to test whether the low-energy excess is due to neutrino oscillations and whether there is a difference between {nu}{sub {mu}} and {bar {nu}}{sub {mu}} disappearance, we propose building a second MiniBooNE detector at (or moving the existing MiniBooNE detector to) a distance of {approx}200 m from the Booster Neutrino Beam (BNB) production target. With identical detectors at different distances, most of the systematic errors will cancel when taking a ratio of events in the two detectors, asmore » the neutrino flux varies as 1/r{sup 2} to a calculable approximation. This will allow sensitive tests of oscillations for both {nu}{sub e} and {bar {nu}} appearance and {nu}{sub {mu}} and {bar {nu}}{sub {mu}} disappearance. Furthermore, a comparison between oscillations in neutrino mode and antineutrino mode will allow a sensitive search for CP and CPT violation in the lepton sector at short baseline ({Delta}m{sup 2} > 0.1 eV{sup 2}). Finally, by comparing the rates for a neutral current (NC) reaction, such as NC {pi}{sup 0} scattering or NC elastic scattering, a direct search for sterile neutrinos will be made. The initial amount of running time requested for the near detector will be a total of {approx}2E20 POT divided between neutrino mode and antineutrino mode, which will provide statistics comparable to what has already been collected in the far detector. A thorough understanding of this short-baseline physics will be of great importance to future long-baseline oscillation experiments.« less

Authors:
 [1];  [2];  [3];  [4];  [4];  [4];  [4];  [5];  [5];  [5];  [6]
  1. Univ. of Alabama, Tuscaloosa, AL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Embry-Riddle Aeronautical Univ., Prescott, AZ (United States)
  4. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  5. Univ. of Florida, Gainesville, FL (United States)
  6. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). et al.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
993870
Report Number(s):
FERMILAB-PROPOSAL-1002
TRN: US1100064
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ANTINEUTRINOS; PARTICLE DECAY; ELASTIC SCATTERING; LEPTONS; NEUTRAL CURRENTS; NEUTRINO BEAMS; NEUTRINO OSCILLATION; NEUTRINOS; MUON NEUTRINOS; MUON ANTINEUTRINOS; CP INVARIANCE; RADIATION DETECTORS; POSITIONING; Accelerators

Citation Formats

Stancu, I., Djurcic, Z., Smith, D., Ford, R., Kobilarcik, T., Marsh, W., Moore, C. D., Grange, J., Osmanov, B., Ray, H., and Garvey, G. T. Letter of Intent to Build a MiniBooNE Near Detector: BooNE. United States: N. p., 2009. Web. doi:10.2172/993870.
Stancu, I., Djurcic, Z., Smith, D., Ford, R., Kobilarcik, T., Marsh, W., Moore, C. D., Grange, J., Osmanov, B., Ray, H., & Garvey, G. T. Letter of Intent to Build a MiniBooNE Near Detector: BooNE. United States. doi:10.2172/993870.
Stancu, I., Djurcic, Z., Smith, D., Ford, R., Kobilarcik, T., Marsh, W., Moore, C. D., Grange, J., Osmanov, B., Ray, H., and Garvey, G. T. Mon . "Letter of Intent to Build a MiniBooNE Near Detector: BooNE". United States. doi:10.2172/993870. https://www.osti.gov/servlets/purl/993870.
@article{osti_993870,
title = {Letter of Intent to Build a MiniBooNE Near Detector: BooNE},
author = {Stancu, I. and Djurcic, Z. and Smith, D. and Ford, R. and Kobilarcik, T. and Marsh, W. and Moore, C. D. and Grange, J. and Osmanov, B. and Ray, H. and Garvey, G. T.},
abstractNote = {There is accumulating evidence for a difference between neutrino and antineutrino oscillations at the {approx}1 eV{sup 2} scale. The MiniBooNE experiment observes an unexplained excess of electron-like events at low energies in neutrino mode, which may be due, for example, to either a neutral current radiative interaction, sterile neutrino decay, or to neutrino oscillations involving sterile neutrinos and which may be related to the LSND signal. No excess of electron-like events (-0.5 {+-} 7.8 {+-} 8.7), however, is observed so far at low energies in antineutrino mode. Furthermore, global 3+1 and 3+2 sterile neutrino fits to the world neutrino and antineutrino data suggest a difference between neutrinos and antineutrinos with significant (sin{sup 2} 2{theta}{sub {mu}{mu}} {approx} 35%) {bar {nu}}{sub {mu}} disappearance. In order to test whether the low-energy excess is due to neutrino oscillations and whether there is a difference between {nu}{sub {mu}} and {bar {nu}}{sub {mu}} disappearance, we propose building a second MiniBooNE detector at (or moving the existing MiniBooNE detector to) a distance of {approx}200 m from the Booster Neutrino Beam (BNB) production target. With identical detectors at different distances, most of the systematic errors will cancel when taking a ratio of events in the two detectors, as the neutrino flux varies as 1/r{sup 2} to a calculable approximation. This will allow sensitive tests of oscillations for both {nu}{sub e} and {bar {nu}} appearance and {nu}{sub {mu}} and {bar {nu}}{sub {mu}} disappearance. Furthermore, a comparison between oscillations in neutrino mode and antineutrino mode will allow a sensitive search for CP and CPT violation in the lepton sector at short baseline ({Delta}m{sup 2} > 0.1 eV{sup 2}). Finally, by comparing the rates for a neutral current (NC) reaction, such as NC {pi}{sup 0} scattering or NC elastic scattering, a direct search for sterile neutrinos will be made. The initial amount of running time requested for the near detector will be a total of {approx}2E20 POT divided between neutrino mode and antineutrino mode, which will provide statistics comparable to what has already been collected in the far detector. A thorough understanding of this short-baseline physics will be of great importance to future long-baseline oscillation experiments.},
doi = {10.2172/993870},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {10}
}

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