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Title: Independent measurement of the neutrino mixing angle θ 13 via neutron capture on hydrogen at Daya Bay

Journal Article · · Physical Review. D, Particles, Fields, Gravitation and Cosmology
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A new measurement of the θ13 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 θ13 measurement. With a 217-day antineutrino data set obtained with six antineutrino detectors and from six 2.9 GWth reactors, the rate deficit observed at the far hall is interpreted as sin213=0.083±0.018 in the three-flavor oscillation model. When combined with the gadolinium-capture result from Daya Bay, we obtain sin213=0.089±0.008 as the final result for the six-antineutrino-detector configuration of the Daya Bay experiment.

Research Organization:
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Organization:
Daya Bay Collaboration
Grant/Contract Number:
SC0009973
OSTI ID:
1169036
Alternate ID(s):
OSTI ID: 1179990; OSTI ID: 1594466
Report Number(s):
BNL--107348-2015-JA; KA2201020
Journal Information:
Physical Review. D, Particles, Fields, Gravitation and Cosmology, Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology Journal Issue: 7 Vol. 90; ISSN PRVDAQ; ISSN 1550-7998
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Physics with Reactor Neutrinos text January 2018
Physics with reactor neutrinos journal February 2019
Missing energy and the measurement of the C P -violating phase in neutrino oscillations journal November 2015
Introduction to Neutrino Oscillation book September 2017
New Measurement of Antineutrino Oscillation with the Full Detector Configuration at Daya Bay journal September 2015
A new measurement of antineutrino oscillation with the full detector configuration at Daya Bay text January 2015