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Title: Study of the wave packet treatment of neutrino oscillation at Daya Bay

Journal Article · · European Physical Journal. C, Particles and Fields
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Here, the disappearance of reactor ν¯e observed by the Daya Bay experiment is examined in the framework of a model in which the neutrino is described by a wave packet with a relative intrinsic momentum dispersion σrelσrel . Three pairs of nuclear reactors and eight antineutrino detectors, each with good energy resolution, distributed among three experimental halls, supply a high-statistics sample of ν¯e acquired at nine different baselines. This provides a unique platform to test the effects which arise from the wave packet treatment of neutrino oscillation. The modified survival probability formula was used to fit Daya Bay data, providing the first experimental limits: 2.38×10–17 < σrel < 0.23. Treating the dimensions of the reactor cores and detectors as constraints, the limits are improved: 10–14 ≲ σrel < 0.23, and an upper limit of σrel < 0.20 (which corresponds to σx ≳ 10–11cm) is obtained. All limits correspond to a 95% C.L. Furthermore, the effect due to the wave packet nature of neutrino oscillation is found to be insignificant for reactor antineutrinos detected by the Daya Bay experiment thus ensuring an unbiased measurement of the oscillation parameters sin22θ13 and Δm232 within the plane wave model.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
Daya Bay Collaboration
Grant/Contract Number:
AC02-05CH11231; SC0012704
OSTI ID:
1408467
Alternate ID(s):
OSTI ID: 1408719
Report Number(s):
BNL-114473-2017-JA; ark:/13030/qt6hm7b1fw; TRN: US1702945
Journal Information:
European Physical Journal. C, Particles and Fields, Vol. 77, Issue 9; ISSN 1434-6044
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

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Cited By (5)

Physics with reactor neutrinos journal February 2019
Quantum decoherence effects in neutrino oscillations at DUNE journal September 2019
Decoherence, matter effect, and neutrino hierarchy signature in long baseline experiments journal November 2017
Entangled neutrino states in a toy model QFT journal June 2019
Physics with Reactor Neutrinos text January 2018

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
wave packet
neutrino oscillation
neutrino mixing
decoherence in neutrino oscillation
reactor
Daya Bay