skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: New measurement of θ 13 via neutron capture on hydrogen at Daya Bay

Abstract

This article reports an improved independent measurement of neutrino mixing angle θ 13 at the Daya Bay Reactor Neutrino Experiment. Electron antineutrinos were identified by inverse β-decays with the emitted neutron captured by hydrogen, yielding a data set with principally distinct uncertainties from that with neutrons captured by gadolinium. With the final two of eight antineutrino detectors installed, this study used 621 days of data including the previously reported 217-day data set with six detectors. The dominant statistical uncertainty was reduced by 49%. Intensive studies of the cosmogenic muon-induced 9Li and fast neutron backgrounds and the neutron-capture energy selection efficiency, resulted in a reduction of the systematic uncertainty by 26%. The deficit in the detected number of antineutrinos at the far detectors relative to the expected number based on the near detectors yielded sin 213 = 0.071 ± 0.011 in the three-neutrino-oscillation framework. As a result, the combination of this result with the gadolinium-capture result is also reported.

Authors:
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
Daya Bay Collaboration
OSTI Identifier:
1254123
Alternate Identifier(s):
OSTI ID: 1249657; OSTI ID: 1456938; OSTI ID: 1594392
Report Number(s):
BNL-112137-2016-JA
Journal ID: ISSN 2470-0010; PRVDAQ; R&D Project: PO-022; KA2201020
Grant/Contract Number:  
SC0012704; AC02-05CH11231; SC0009973
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 93; Journal Issue: 7; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; neutrino oscillation; hydrogen neutron-capture; reactor antineutrinos; Daya Bay

Citation Formats

F. P. An. New measurement of θ13 via neutron capture on hydrogen at Daya Bay. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.93.072011.
F. P. An. New measurement of θ13 via neutron capture on hydrogen at Daya Bay. United States. doi:10.1103/PhysRevD.93.072011.
F. P. An. Thu . "New measurement of θ13 via neutron capture on hydrogen at Daya Bay". United States. doi:10.1103/PhysRevD.93.072011. https://www.osti.gov/servlets/purl/1254123.
@article{osti_1254123,
title = {New measurement of θ13 via neutron capture on hydrogen at Daya Bay},
author = {F. P. An},
abstractNote = {This article reports an improved independent measurement of neutrino mixing angle θ13 at the Daya Bay Reactor Neutrino Experiment. Electron antineutrinos were identified by inverse β-decays with the emitted neutron captured by hydrogen, yielding a data set with principally distinct uncertainties from that with neutrons captured by gadolinium. With the final two of eight antineutrino detectors installed, this study used 621 days of data including the previously reported 217-day data set with six detectors. The dominant statistical uncertainty was reduced by 49%. Intensive studies of the cosmogenic muon-induced 9Li and fast neutron backgrounds and the neutron-capture energy selection efficiency, resulted in a reduction of the systematic uncertainty by 26%. The deficit in the detected number of antineutrinos at the far detectors relative to the expected number based on the near detectors yielded sin22θ13 = 0.071 ± 0.011 in the three-neutrino-oscillation framework. As a result, the combination of this result with the gadolinium-capture result is also reported.},
doi = {10.1103/PhysRevD.93.072011},
journal = {Physical Review D},
issn = {2470-0010},
number = 7,
volume = 93,
place = {United States},
year = {2016},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Hadrons and other secondaries generated by cosmic-ray muons underground
journal, September 1995

  • Khalchukov, F. F.; Korolkova, E. V.; Kudryavtsev, V. A.
  • Il Nuovo Cimento C, Vol. 18, Issue 5
  • DOI: 10.1007/BF02506782

Indication of Electron Neutrino Appearance from an Accelerator-Produced Off-Axis Muon Neutrino Beam
journal, July 2011


Determination of antineutrino spectra from nuclear reactors
journal, August 2011


Predicting neutron production from cosmic-ray muons
journal, June 2001


Automated calibration system for a high-precision measurement of neutrino mixing angle θ13 with the Daya Bay antineutrino detectors
journal, June 2014

  • Liu, J.; Cai, B.; Carr, R.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 750
  • DOI: 10.1016/j.nima.2014.02.049

Indication of Reactor ν ¯ e Disappearance in the Double Chooz Experiment
journal, March 2012


Combined Analysis of ν μ Disappearance and ν μ ν e Appearance in MINOS Using Accelerator and Atmospheric Neutrinos
journal, May 2014


Muon-induced production of radioactive isotopes in scintillation detectors
journal, August 2000


Review of Particle Physics
journal, August 2014


Measurement of θ 13 in Double Chooz using neutron captures on hydrogen with novel background rejection techniques
journal, January 2016


Improved measurement of electron antineutrino disappearance at Daya Bay
journal, January 2013


First Results from KamLAND: Evidence for Reactor Antineutrino Disappearance
journal, January 2003


The muon system of the Daya Bay Reactor antineutrino experiment
journal, February 2015

  • An, F. P.; Balantekin, A. B.; Band, H. R.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 773
  • DOI: 10.1016/j.nima.2014.09.070

Target mass monitoring and instrumentation in the Daya Bay antineutrino detectors
journal, April 2013


Supernova Relic Neutrino search with neutron tagging at Super-Kamiokande-IV
journal, January 2015


Improved calculation of the energy release in neutron-induced fission
journal, July 2013


The Daya Bay antineutrino detector filling system and liquid mass measurement
journal, September 2013


Geant4 developments and applications
journal, February 2006

  • Allison, J.; Amako, K.; Apostolakis, J.
  • IEEE Transactions on Nuclear Science, Vol. 53, Issue 1
  • DOI: 10.1109/TNS.2006.869826

A precise calculation of delayed coincidence selection efficiency and accidental coincidence rate
journal, May 2015


Spectral Measurement of Electron Antineutrino Oscillation Amplitude and Frequency at Daya Bay
journal, February 2014


Observation of Electron Neutrino Appearance in a Muon Neutrino Beam
journal, February 2014


Improved predictions of reactor antineutrino spectra
journal, May 2011


Measurement of the Reactor Antineutrino Flux and Spectrum at Daya Bay
journal, February 2016


Electron Neutrino and Antineutrino Appearance in the Full MINOS Data Sample
journal, April 2013


Search for neutrino oscillations on a long base-line at the CHOOZ nuclear power station
journal, April 2003


Improved measurements of the neutrino mixing angle θ 13 with the Double Chooz detector
journal, October 2014

  • Abe, Y.; dos Anjos, J. C.; Barriere, J. C.
  • Journal of High Energy Physics, Vol. 2014, Issue 10
  • DOI: 10.1007/JHEP10(2014)086

A study of antineutrino spectra from spent nuclear fuel at Daya Bay
journal, January 2012


Improved Search for Muon-Neutrino to Electron-Neutrino Oscillations in MINOS
journal, October 2011


First measurement of <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msub><mml:mrow><mml:mi>θ</mml:mi></mml:mrow><mml:mrow><mml:mn>13</mml:mn></mml:mrow></mml:msub></mml:math> from delayed neutron capture on hydrogen in the Double Chooz experiment
journal, June 2013


Experimental investigation of geologically produced antineutrinos with KamLAND
journal, July 2005


Production of radioactive isotopes through cosmic muon spallation in KamLAND
journal, February 2010


Production of a gadolinium-loaded liquid scintillator for the Daya Bay reactor neutrino experiment
journal, November 2014

  • Beriguete, Wanda; Cao, Jun; Ding, Yayun
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 763
  • DOI: 10.1016/j.nima.2014.05.119

Systematic impact of spent nuclear fuel on θ 13 sensitivity at reactor neutrino experiment
journal, August 2009


Observation of Electron-Antineutrino Disappearance at Daya Bay
journal, April 2012


A side-by-side comparison of Daya Bay antineutrino detectors
journal, September 2012

  • An, F. P.; An, Q.; Bai, J. Z.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 685
  • DOI: 10.1016/j.nima.2012.05.030

New Measurement of Antineutrino Oscillation with the Full Detector Configuration at Daya Bay
journal, September 2015


The detector system of the Daya Bay reactor neutrino experiment
journal, March 2016

  • An, F. P.; Bai, J. Z.; Balantekin, A. B.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 811
  • DOI: 10.1016/j.nima.2015.11.144

Neutron calibration sources in the Daya Bay experiment
journal, October 2015

  • Liu, J.; Carr, R.; Dwyer, D. A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 797
  • DOI: 10.1016/j.nima.2015.07.003

ENDF/B-VII.1 Nuclear Data for Science and Technology: Cross Sections, Covariances, Fission Product Yields and Decay Data
journal, December 2011


Erratum to: Improved measurements of the neutrino mixing angle θ 13 with the Double Chooz detector
journal, February 2015

  • Abe, Y.; dos Anjos, J. C.; Barriere, J. C.
  • Journal of High Energy Physics, Vol. 2015, Issue 2
  • DOI: 10.1007/JHEP02(2015)074

Angular distribution of neutron inverse beta decay, ν ¯ e + p e + + n
journal, July 1999


Neutrino physics with JUNO
journal, February 2016


Acrylic target vessels for a high-precision measurement of θ 13 with the Daya Bay antineutrino detectors
journal, June 2012


New results from RENO and prospects with RENO-50
journal, August 2015


Measuring cosmogenic 9Li background in a reactor neutrino experiment
journal, August 2006

  • Wen, Liangjian; Cao, Jun; Luk, Kam-Biu
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 564, Issue 1
  • DOI: 10.1016/j.nima.2006.04.047

Improved Search for ν μ ν e Oscillation in a Long-Baseline Accelerator Experiment
journal, May 2006


Independent measurement of the neutrino mixing angle θ 13 via neutron capture on hydrogen at Daya Bay
journal, October 2014


Final results from the Palo Verde neutrino oscillation experiment
journal, January 2002


The next-generation liquid-scintillator neutrino observatory LENA
journal, June 2012


Suppressing ringing caused by large photomultiplier tube signals
journal, March 2012


Geant4—a simulation toolkit
journal, July 2003

  • Agostinelli, S.; Allison, J.; Amako, K.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3
  • DOI: 10.1016/S0168-9002(03)01368-8

Design, characterization, and sensitivity of the supernova trigger system at Daya Bay
journal, February 2016


    Works referencing / citing this record:

    Extracting Majorana properties from strong bounds on neutrinoless double beta decay
    journal, February 2017