scholarly journals Estimate ofθ14independent of the reactor antineutrino flux determinations

2012 ◽  
Vol 85 (7) ◽  
Author(s):  
Antonio Palazzo
Keyword(s):  
Reactor Antineutrino ◽  
Antineutrino Flux

scholarly journals Evolution of the Reactor Antineutrino Flux and Spectrum at Daya Bay

2017 ◽  
Vol 118 (25) ◽  
Author(s):  
F. P. An ◽  
A. B. Balantekin ◽  
H. R. Band ◽  
M. Bishai ◽  
S. Blyth ◽  
...  
Keyword(s):  
Daya Bay ◽  
Reactor Antineutrino ◽  
Antineutrino Flux

scholarly journals The physics potential of a reactor neutrino experiment with Skipper CCDs: measuring the weak mixing angle

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Guillermo Fernandez-Moroni ◽  
Pedro A. N. Machado ◽  
Ivan Martinez-Soler ◽  
Yuber F. Perez-Gonzalez ◽  
Dario Rodrigues ◽  
...  
Keyword(s):  
Experimental Setup ◽  
Neutrino Experiment ◽  
Weak Mixing Angle ◽  
Weak Mixing ◽  
Background Rate ◽  
Mixing Angle ◽  
Reactor Antineutrino ◽  
Physics Potential ◽  
Antineutrino Flux ◽  
Nucleus Scattering

Abstract We analyze in detail the physics potential of an experiment like the one recently proposed by the vIOLETA collaboration: a kilogram-scale Skipper CCD detector deployed 12 meters away from a commercial nuclear reactor core. This experiment would be able to detect coherent elastic neutrino nucleus scattering from reactor neutrinos, capitalizing on the exceptionally low ionization energy threshold of Skipper CCDs. To estimate the physics reach, we elect the measurement of the weak mixing angle as a case study. We choose a realistic benchmark experimental setup and perform variations on this benchmark to understand the role of quenching factor and its systematic uncertainties, background rate and spectral shape, total exposure, and reactor antineutrino flux uncertainty. We take full advantage of the reactor flux measurement of the Daya Bay collaboration to perform a data driven analysis which is, up to a certain extent, independent of the theoretical un- certainties on the reactor antineutrino flux. We show that, under reasonable assumptions, this experimental setup may provide a competitive measurement of the weak mixing angle at few MeV scale with neutrino-nucleus scattering.

scholarly journals Recent results from reactor antineutrino experiments

2019 ◽  
Author(s):  
Hyunkwan Seo
Keyword(s):  
Oscillation Frequency ◽  
Reactor Fuel ◽  
Daya Bay ◽  
Neutrino Mixing ◽  
Mixing Angle ◽  
Reactor Antineutrino ◽  
Double Chooz ◽  
Antineutrino Flux

The smallest neutrino mixing angle \theta_{13}θ13 has been successfully measured by the disappearance of reactor antineutrinos at RENO, Daya Bay, and Double Chooz. The oscillation frequency is also measured based on energy and baseline dependent disappearance probability of reactor antineutrinos. Recent results find a variation in the observed reactor antineutrino flux as a function of the reactor fuel evolution. We report more precisely measured values of \theta_{13}θ13 and \Delta m_{ee}^2Δmee2 and results on the evolution of observed reactor antineutrino yield and spectrum.

scholarly journals Sterile neutrinos and the global reactor antineutrino dataset

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Jeffrey M. Berryman ◽  
Patrick Huber
Keyword(s):  
Open Source Software ◽  
Sterile Neutrino ◽  
Statistical Interpretation ◽  
Spectral Ratios ◽  
Sterile Neutrinos ◽  
Reactor Antineutrino ◽  
Inverse Beta Decay ◽  
Antineutrino Flux ◽  
Flux Model ◽  
Tool Set

Abstract We present results from global fits to the available reactor antineutrino dataset, as of Fall 2019, to determine the global preference for a fourth, sterile neutrino. We have separately considered experiments that measure the integrated inverse-beta decay (IBD) rate from those that measure the energy spectrum of IBD events at one or more locations. The evidence that we infer from rate measurements varies between ≲ 3σ and negligible depending on the reactor antineutrino flux model employed. Moreover, we find that spectral ratios ostensibly imply ≳ 3σ evidence, consistent with previous work, though these measurements are known to be plagued by issues related to statistical interpretation; these results should therefore be viewed cautiously. The software used is the newly developed GLoBESfit tool set which is based on the publicly available GLoBES framework and will be released as open-source software.

scholarly journals Latest Results from Neutrino Oscillation Experiment Daya Bay

2019 ◽  
Vol 64 (7) ◽  
pp. 653
Author(s):  
V. Vorobel
Keyword(s):  
Mass Splitting ◽  
Current Status ◽  
Daya Bay ◽  
Neutrino Experiment ◽  
Neutrino Mixing ◽  
Mixing Angle ◽  
Reactor Antineutrino ◽  
Neutrino Oscillation Experiment ◽  
Reactor Neutrino ◽  
Antineutrino Flux

The Daya Bay Reactor Neutrino Experiment was designed to measure Θ13, the smallest mixing angle in the three-neutrino mixing framework, with unprecedented precision. The experiment consists of eight identically designed detectors placed underground at different baselines from three pairs of nuclear reactors in South China. Since Dec. 2011, the experiment has been running stably for more than 7 years, and has collected the largest reactor antineutrino sample to date. Daya Bay greatly improved the precision on Θ13 and made an independent measurement of the effective mass splitting in the electron antineutrino disappearance channel. Daya Bay also performed a number of other precise measurements such as a high-statistics determination of the absolute reactor antineutrino flux and the spectrum evolution, as well as a search for the sterile neutrino mixing, among others. The most recent results from Daya Bay are discussed in this paper, as well as the current status and future prospects of the experiment.

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