Publications by authors named "J J Cherwinka"
Article Synopsis
- The LUX-ZEPLIN (LZ) experiment is a significant scientific study using a dual-phase xenon chamber located underground in South Dakota to search for dark matter interactions.
- The study extends existing theories to include relativistic effects, providing new constraints on the interactions between weakly interacting massive particles and nucleons based on their electric and magnetic dipole moments.
- Results include 90% confidence level limits on the coupling strength of five different interactions, analyzed over a specific energy range, which advances our understanding in particle physics beyond previous nonrelativistic effective field theories.
Article Synopsis
- - The Daya Bay experiment has successfully measured the oscillation amplitude and frequency of reactor antineutrinos over nearly 2,000 days of data, finding significant results about their behavior.
- - They observed over 3.6 million signal candidates using improved selection and calibration methods, leading to a measurement of sin²2θ₁₃ = 0.0759 with a precision that indicates how antineutrinos change states.
- - Combining results from different detection methods at Daya Bay, the overall measurement of sin²2θ₁₃ increased precision to 0.0833±0.0022, representing an 8% improvement in understanding these neutrino properties.
This Letter presents results of a search for the mixing of a sub-eV sterile neutrino with three active neutrinos based on the full data sample of the Daya Bay Reactor Neutrino Experiment, collected during 3158 days of detector operation, which contains 5.55×10^{6} reactor ν[over ¯]_{e} candidates identified as inverse beta-decay interactions followed by neutron capture on gadolinium. The analysis benefits from a doubling of the statistics of our previous result and from improvements of several important systematic uncertainties.
View Article and Find Full Text PDFThe LUX-ZEPLIN experiment is a dark matter detector centered on a dual-phase xenon time projection chamber operating at the Sanford Underground Research Facility in Lead, South Dakota, USA. This Letter reports results from LUX-ZEPLIN's first search for weakly interacting massive particles (WIMPs) with an exposure of 60 live days using a fiducial mass of 5.5 t.
View Article and Find Full Text PDFReactor neutrino experiments play a crucial role in advancing our knowledge of neutrinos. In this Letter, the evolution of the flux and spectrum as a function of the reactor isotopic content is reported in terms of the inverse-beta-decay yield at Daya Bay with 1958 days of data and improved systematic uncertainties. These measurements are compared with two signature model predictions: the Huber-Mueller model based on the conversion method and the SM2018 model based on the summation method.
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