A5036470120- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Gamma-ray bursts and supernovae
- Scientific Research and Discoveries
- Radiation Detection and Scintillator Technologies
- Atmospheric Ozone and Climate
- Particle Accelerators and Free-Electron Lasers
- Software System Performance and Reliability
- RFID technology advancements
- Advanced Measurement and Metrology Techniques
- Engineering Diagnostics and Reliability
- Advanced machining processes and optimization
- Radioactivity and Radon Measurements
- Luminescence Properties of Advanced Materials
- Gear and Bearing Dynamics Analysis
- Muon and positron interactions and applications
- Manufacturing Process and Optimization
- Network Security and Intrusion Detection
- Electronic Packaging and Soldering Technologies
- Pulsars and Gravitational Waves Research
- Advanced Numerical Analysis Techniques
Nanchang Hangkong University
2025
Tohoku University
2022-2024
Massachusetts Institute of Technology
2021-2023
Fermi National Accelerator Laboratory
2023
Ministry of Industry and Information Technology
2023
University of Washington
2017-2018
Nanjing University
2010-2015
The Daya Bay Reactor Neutrino Experiment has measured a nonzero value for the neutrino mixing angle ${\ensuremath{\theta}}_{13}$ with significance of 5.2 standard deviations. Antineutrinos from six 2.9 $\mathrm{G}{\mathrm{W}}_{\mathrm{th}}$ reactors were detected in antineutrino detectors deployed two near (flux-weighted baseline 470 m and 576 m) one far (1648 underground experimental halls. With $43\text{ }000\text{ }\text{ }\mathrm{ton}--\mathrm{G}{\mathrm{W}}_{\mathrm{th}}--\mathrm{day}$...
The coherent elastic scattering of neutrinos off nuclei has eluded detection for four decades, even though its predicted cross section is by far the largest all low-energy neutrino couplings. This mode interaction offers new opportunities to study properties and leads a miniaturization detector size, with potential technological applications. We observed this process at 6.7σ confidence level, using low-background, 14.6-kilogram CsI[Na] scintillator exposed emissions from Spallation Neutron...
We report an improved measurement of the neutrino mixing angle $\theta_{13}$ from Daya Bay Reactor Neutrino Experiment. exclude a zero value for $\sin^22\theta_{13}$ with significance 7.7 standard deviations. Electron antineutrinos six reactors 2.9 GW$_{\rm th}$ were detected in antineutrino detectors deployed two near (flux-weighted baselines 470 m and 576 m) one far (1648 underground experimental halls. Using 139 days data, 28909 (205308) electron candidates at hall (near halls). The ratio...
The Majorana Collaboration is operating an array of high purity Ge detectors to search for neutrinoless double-β decay in ^{76}Ge. Demonstrator comprises 44.1 kg (29.7 enriched ^{76}Ge) split between two modules contained a low background shield at the Sanford Underground Research Facility Lead, South Dakota. Here we present results from data taken during construction, commissioning, and start full operations. We achieve unprecedented energy resolution 2.5 keV FWHM Q_{ββ} very with no...
The KamLAND-Zen experiment has provided stringent constraints on the neutrinoless double-beta (0νββ) decay half-life in ^{136}Xe using a xenon-loaded liquid scintillator. We report an improved search upgraded detector with almost double amount of xenon and ultralow radioactivity container, corresponding to exposure 970 kg yr ^{136}Xe. These new data provide valuable insight into backgrounds, especially from cosmic muon spallation xenon, have required use novel background rejection...
We report on a search for electron antineutrinos ($\bar{\nu}_e$) from astrophysical sources in the neutrino energy range 8.3 to 30.8 MeV with KamLAND detector. In an exposure of 6.72 kton-year liquid scintillator, we observe 18 candidate events via inverse beta decay reaction. Although there is large background uncertainty neutral current atmospheric interactions, find no significant excess over model predictions. Assuming several supernova relic spectra, give upper flux limits 60--110...
In software development, debugging is the most tedious and time-consuming phase. Therefore, various automated fault localization techniques have been proposed to assist debugging. Among existing techniques, Spectrum-Based Fault Localization (SBFL) one of extensively researched methods. Traditional SBFL rely solely on coverage program execution for localization, which means they neglect interactions between entities propagation paths during program, resulting in a tie problem that reduces...
Abstract The electron antineutrino flux limits are presented for the brightest gamma-ray burst (GRB) of all time, GRB221009A, over a range 1.8–200 MeV using Kamioka Liquid Scintillator Antineutrino Detector. Using multiple time windows ranging from minutes to days surrounding event search antineutrinos coincident with GRB, we set an upper limit on under assumption several power-law neutrino source spectra, indices 1.5 3 in steps 0.5. No excess was observed any seconds around trigger T 0 ....
Abstract The decay of the primordial isotopes 238 U, 235 232 Th, and 40 K has contributed to terrestrial heat budget throughout Earth's history. Hence, individual abundance those are key parameters in reconstructing contemporary Earth models. geoneutrinos produced by radioactive decays uranium thorium have been observed with Kamioka Liquid‐Scintillator Antineutrino Detector (KamLAND). Those measurements improved more than 18‐year observation time, improvement detector background levels...
We report a measurement of the strange axial coupling constant ${g}_{A}^{s}$ using atmospheric neutrino data at KamLAND. This is component form factor neutral-current quasielastic (NCQE) interaction. The value significantly changes ratio proton and neutron NCQE cross sections. KamLAND suitable for measuring interactions as it can detect nucleon recoils with low-energy thresholds measure multiplicity high efficiency. data, including information on associated interactions, makes possible to...
Cosmic-ray muons produce various radioisotopes when passing through material. These spallation products can be backgrounds for rare event searches such as in solar neutrino, double-$\ensuremath{\beta}$ decay, and dark matter search experiments. The KamLAND-Zen experiment neutrinoless decay 745 kg of xenon dissolved liquid scintillator. includes dead-time-free electronics with a high efficiency detecting muon-induced neutrons. production yields different are measured combination delayed...
Rare event searches allow us to search for new physics at energy scales inaccessible with other means by leveraging specialized large-mass detectors. Machine learning provides a tool maximize the information provided these The is sparse, which forces algorithms start from lowest level data and exploit all symmetries in detector produce results. In this work we present KamNet harnesses breakthroughs geometric deep spatiotemporal analysis reach of KamLAND-Zen, kiloton scale spherical liquid...
Abstract Preceding a core-collapse supernova (CCSN), various processes produce an increasing amount of neutrinos all flavors characterized by mounting energies from the interior massive stars. Among them, electron antineutrinos are potentially detectable terrestrial neutrino experiments such as KamLAND and Super-Kamiokande (SK) via inverse beta decay interactions. Once these pre-supernova (pre-SN) observed, early warning upcoming CCSN can be provided. In light this, SK, both located in...
Linear alkyl benzene (LAB) is an attractive solvent for large scale liquid scintillator detectors due to its low toxicity, high flash point, and good compatibility with acrylic. Very optical purity required be used in detectors. We studied several LAB samples collected from two companies by measuring the light attenuation length, UV-Vis absorption spectrum, some other properties. Some of them have not transparency. Compositions these were then analyzed GC-MS dimensional GCxGC/MS. impurities,...
Neutrinoless double-beta decay (0vbb) is a hypothetical nuclear that only possible if the neutrino Majorana fermion. Experimental searches for this process with ever-increasing sensitivity have placed strong constraints on 0vbb half-lives of relevant isotopes. Relating these experimental to underlying particle physics -- effective mass requires understanding matrix elements transition. These can be computed within field theory framework, but input from lattice QCD necessary constrain...