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Independent measurement of the neutrino mixing angle θ_(13) via neutron capture on hydrogen at Daya Bay

An, F. P. and McKeown, R. D. and Tsang, R. H. M. (2014) Independent measurement of the neutrino mixing angle θ_(13) via neutron capture on hydrogen at Daya Bay. Physical Review D, 90 (7). Art. No. 071101. ISSN 1550-7998 . http://resolver.caltech.edu/CaltechAUTHORS:20141204-112407246

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Abstract

A new measurement of the θ_(13) mixing angle has been obtained at the Daya Bay Reactor Neutrino Experiment via the detection of inverse beta decays tagged by neutron capture on hydrogen. The antineutrino events for hydrogen capture are distinct from those for gadolinium capture with largely different systematic uncertainties, allowing a determination independent of the gadolinium-capture result and an improvement on the precision of the θ_(13) measurement. With a 217-day antineutrino data set obtained with six antineutrino detectors and from six 2.9 GW_(th) reactors, the rate deficit observed at the far hall is interpreted as sin^2 2θ_(13) = 0.083±0.018 in the three-flavor oscillation model. When combined with the gadolinium-capture result from Daya Bay, we obtain sin^2 2θ_(13) = 0.089±0.008 as the final result for the six-antineutrino-detector configuration of the Daya Bay experiment.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevD.90.071101DOIArticle
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.90.071101PublisherArticle
Alternate Title:Independent measurement of the neutrino mixing angle theta(13) via neutron capture on hydrogen at Daya Bay
Additional Information:© 2014 American Physical Society. Received 24 June 2014; Published 3 October 2014. Daya Bay is supported in part by the Ministry of Science and Technology of China, the United States Department of Energy, the Chinese Academy of Sciences, the National Natural Science Foundation of China, the Guangdong provincial government, the Shenzhen municipal government, the China General Nuclear Power Corporation, Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, Key Laboratory of Particle Physics and Particle Irradiation (Shandong University), Ministry of Education, Shanghai Laboratory for Particle Physics and Cosmology, the Research Grants Council of the Hong Kong Special Administrative Region of China, University Development Fund of The University of Hong Kong, the MOE program for Research of Excellence at National Taiwan University, National Chiao-Tung University, and NSC fund support from Taiwan, the U.S. National Science Foundation, the Alfred P. Sloan Foundation, the Ministry of Education, Youth and Sports of the Czech Republic, the Joint Institute of Nuclear Research in Dubna, Russia, the CNFC-RFBR joint research program, the National Commission of Scientific and Technological Research of Chile, and the Tsinghua University Initiative Scientific Research Program. We acknowledge Yellow River Engineering Consulting Co., Ltd. and China railway 15th Bureau Group Co., Ltd. for building the underground laboratory. We are grateful for the ongoing cooperation from the China General Nuclear Power Corporation and China Light & Power Company.
Funders:
Funding AgencyGrant Number
Ministry of Science and Technology of ChinaUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Chinese Academy of SciencesUNSPECIFIED
National Natural Science Foundation of ChinaUNSPECIFIED
Guangdong Provincial GovernmentUNSPECIFIED
Shenzhen Municipal GovernmentUNSPECIFIED
China General Nuclear Power CorporationUNSPECIFIED
Key Laboratory of Particle & Radiation Imaging (Tsinghua University)UNSPECIFIED
Ministry of Education (China)UNSPECIFIED
Research Grants Council of Hong KongUNSPECIFIED
University of Hong KongUNSPECIFIED
National Taiwan UniversityUNSPECIFIED
National Chiao-Tung UniversityUNSPECIFIED
National Science Council (Taipei)UNSPECIFIED
NSFUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Ministry of Education, Youth and Sports (MEYS) of Czech RepublicUNSPECIFIED
Joint Institute of Nuclear Research in Dubna, RussiaUNSPECIFIED
CNFC-RFBRUNSPECIFIED
National Commission of Scientific and Technological Research of ChileUNSPECIFIED
Tsinghua University Initiative Scientific Research ProgramUNSPECIFIED
Classification Code:PACS: 14.60.Pq; 13.15.+g; 28.50.Hw; 29.40.Mc.
Record Number:CaltechAUTHORS:20141204-112407246
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20141204-112407246
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:52386
Collection:CaltechAUTHORS
Deposited By: Joanne McCole
Deposited On:04 Dec 2014 20:40
Last Modified:04 Dec 2014 20:40

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