Articles tagged with Particle Physics
James Fast leads Jefferson Lab's EIC project team, focusing on the collider's design and performance baselines. The EIC will study atomic nuclei and unlock secrets of nature's strongest force.
Researchers developed a model to describe the interaction between a rocket plume and planetary surfaces, providing insights into erosion and contamination. The simulation estimates plume shape, temperature, and pressure, as well as material eroded or displaced, for safer landing sites and spacecraft design.
Researchers at Osaka Metropolitan University analyzed the collection of leptons to demonstrate that the lepton flavor mixings are large in the random mass matrix model. The study found that the measure of the matrix should obey the Gaussian distribution, which supports the experimental results for the seesaw model.
Researchers at the University of Missouri are acquiring a new transmission electron microscope (TEM) with a $800,000 grant from the National Science Foundation. The TEM will allow them to conduct experiments in real-time and gain a greater understanding of material structure at an atomic level.
Researchers at Northwestern University have discovered a surprising way to trap microparticles using the combined effects of electrostatics, hydrodynamics, and random Brownian motion. This phenomenon enables the capture of particles in complex environments, such as winding channels, and could revolutionize microfluidic applications and...
Tisca Dorsey has joined the Thomas Jefferson National Accelerator Facility as Director of Business and Finance, bringing her expertise in government operations, contracting, and finance. She will lead the lab's contracting approach and strategy, supporting its growth and expansion.
Researchers have developed nanofluidic devices to study single molecule chemical reactions in solution. These devices provide a test tube-like environment to confine individual molecules and enable high temporal resolution for investigating fast single molecule reactions. By integrating various fields using nanofluidics, scientists can...
Researchers found that kilonovae, caused by neutron star collisions, produce spherical explosions with symmetrical shapes. The discovery may provide a new key to fundamental physics and measuring the Universe's age.
The Vertical Test Area at Jefferson Lab achieved a record-breaking 470 superconducting radiofrequency accelerator cavity tests in 2022, driven by improvements made by operations engineer Justin Kent. This milestone demonstrates the facility's versatility and commitment to supporting cutting-edge research.
A review paper on quantum transport could lead to innovative materials and devices for efficient energy management at the nanoscale. The paper provides a structured overview of theoretical understanding, models, methods, and properties of quantum systems.
Scientists develop a statistical model to describe how particles of different sizes jam together, revealing a common structure that can improve spatial efficiency in various industries. The study's findings have significant implications for applications involving particulate matter, such as construction, medicine, and food manufacturing.
Researchers at Osaka Metropolitan University developed a new method to evaluate X-ray microbeam diameter using mathematical analysis, outperforming conventional methods. The uniform evaluation method is expected to be widely adopted as an international standard.
Researchers at Complexity Science Hub developed a model using physics principles to predict group sizes in humans. By analyzing social stress and homophily, they found that group sizes can be predicted with relatively small information, revealing new insights into human behavior.
Scientists successfully synthesized the elusive Λ(1405) particle and measured its complex mass, revealing a temporary bound state of a K- meson and proton. The findings may provide insights into the interior of ultra-dense neutron stars and the early formation of the Universe.
Citizen science project EEE enables students to collect and analyze data on cosmic rays, producing secondary particles that can be detected on Earth. The network of 60 detectors across Italy allows for correlations between events hundreds of kilometers apart.
Computer simulations demonstrate that chaos plays a crucial role in the emergence of thermodynamic behavior from quantum theory. A quantum system with indistinguishable particles and a thermometer-like particle shows a temperature distribution consistent with Boltzmann's rules only when the system exhibits chaos.
A new quantum algorithm allows for the direct calculation of energy derivatives, a crucial step in molecular geometry optimization, using only one query on a quantum computer. This breakthrough enables the computation of energy derivatives with respect to nuclear coordinates in a single calculation.
Researchers studying exotic atom muonium aim to detect deviations from the Standard Model, which could reveal new physics. By measuring energy levels with unprecedented precision, they may uncover evidence for additional particles or forces that explain the muon's misbehavior.
Researchers at TU Wien have directly measured the fine structure constant using a thin film that rotates light polarisation, revealing an astonishing quantum jump related to this fundamental constant. This measurement provides new insights into the strength of electromagnetic interactions.
Researchers at NIST created grids of quantum dots to study electron behavior in complex materials. The grids provided ideal conditions for electrons to behave like waves or get trapped in individual dots.
Researchers measured the half-lives of five exotic isotopes at the Facility for Rare Isotope Beams (FRIB), a DOE Office of Science user facility. The study provides fundamental information about nuclei near their limits of existence, testing models of the atomic world and advancing research in astrophysics and nuclear physics.
A team of scientists at the University of Bern's Albert Einstein Center for Fundamental Physics has successfully narrowed the scope for the existence of dark matter using a precision experiment with neutron spin clocks. The results excluded axion-like particles and set new limits on dark matter existence.
Researchers have developed a continuum theory of micro-hairs, allowing for the study of collective movements and fluid flows. The theory reveals that even random movement is unstable and leads to synchronisation, while perfect unison is also unstable, resulting in specific patterns of movement.
A team led by Douglas Jerolmack and Paulo Arratia used laboratory experiments to understand how mudslide failure and flow behavior relates to soil material properties. They found a clear signal in 'dirty' samples using high-tech rheometers, shedding light on the tipping point for slope liquefaction.
Researchers can now study microplankton at an individual level using holographic microscopy and AI, gaining a deeper understanding of their movement, growth, reproduction, and interactions. This breakthrough provides new insights into the ocean's oxygen production and carbon cycle.
Researchers assessing the environmental impact of future 'Higgs factories' propose a new figure of merit: carbon footprint per Higgs boson produced. Circular colliders emerge as a promising option due to their excellent physics capability and energy efficiency, which could significantly reduce the environmental cost.
Researchers have developed an intermetallic palladium-zinc alloy with high corrosion resistance and improved catalytic activity. The alloy's unique structure creates a protective skeletal shell around the zinc atoms, preventing leaching and increasing its durability as an electrocatalyst for ethanol oxidation reactions.
A research team from POSTECH and KAIST found that cations play a crucial role in converting CO2 into valuable chemical products like ethylene. The study reveals a new mechanism for high-performance catalytic conditions, paving the way for carbon-neutral technologies.
Achenbach, a renowned experimental physicist, will lead Jefferson Lab's Experimental Hall B, utilizing the world's most powerful accelerator to advance nuclear physics research. He aims to upgrade CEBAF and explore new experiments, including positron beams, to expand knowledge on matter and the universe.
A team of physicists has created a new way to self-assemble particles using emulsions and foldamers. This breakthrough offers promise for building complex materials at the microscopic level, with potential applications in fields like materials science.
Researchers investigate how interparticle interactions affect dynamical localization, a phenomenon where disorder brings particles to a standstill. In disordered systems with multiple interacting electrons, the system's behavior is closely analogous to that of an insulator.
Researchers at the Max Born Institute have used novel ultrashort soft X-ray spectroscopy to study the fate of molecular nitrogen when an electron is kicked out. They found that the B state has a similar degree of excitation as the X state, contradicting previous models. Instead, a coherent interplay between light fields enables lasing ...
Scientists Luca Comisso and Lorenzo Sironi used supercomputers to simulate the origin of high-energy particles in turbulent environments like the sun's atmosphere. Their research provides a clear pattern of when and how these particles form, paving the way for more accurate predictions of space weather events.
The new equation developed by University of Bristol scientists can be used to model accurately particle motion through porous materials like biological tissues, polymers, rocks, and sponges. This could lead to exciting advances in medical procedures, natural gas extraction, and plastic packaging production.
Researchers developed a new machine-learning method to understand force chains in jammed granular solids. The graph neural network approach can predict the position of force chains with high accuracy, even for complex systems and varying conditions.
Scientists developed a simple and rapid method to identify multiple food poisoning bacteria using nanometer-scaled organic metal nanohybrid structures that bind via antibodies to specific bacteria. The method can detect various types of bacteria in one hour without culturing, improving food safety.
Researchers from the University of Pennsylvania studied wind instrument aerosol dispersion to understand how far aerosols travel and decay. Aerosols emitted by wind instruments share a similar concentration and size distribution with normal speech and respiration events, suggesting that musicians should stay 6 feet apart.
A research group from Tokyo University of Science has discovered molecular features that govern the filling process at nanoscales, enabling finer resolutions in ultraviolet nanoimprint lithography. The findings provide valuable insights for guiding the selection and design of optimized resists for sub-10 nm resolution.
Researchers have developed a novel dual-atom catalyst design that can reduce the environmental impact of ammonia production. The new design uses a hybrid of iron and molybdenum to activate dinitrogen, resulting in a more efficient and eco-friendly method for ammonia synthesis.
A committee of distinguished scientists will meet to lay out a vision for the future of high-energy physics, building on decades of planning by the American Physical Society. The meeting aims to identify research questions, directions, and tools for advancing our understanding of the universe.
Researchers developed artificial microtubules to transport microscopic cargo along magnetic stepping stones, overcoming fluid flow obstacles. The technology could facilitate targeted drug delivery and treat blocked vessels or cancerous tumors.
Devi Lal Adhikari's thesis explores mathematical connections between atomic nuclei and neutron stars, shedding light on the structure of both. His research has garnered significant attention from astrophysicists and physicists alike.
Physicists have developed a method to predict the composition of dark matter by analyzing cosmological signatures. The research uses big bang nucleosynthesis and cosmic microwave background radiation to identify specific categories of dark matter with masses between those of the electron and proton.
Scientists have produced identical photons originating from different sources, a crucial step towards applications like quantum computing and secure communication. The researchers achieved this by using precise electric fields to tune the energy levels of quantum dots, resulting in 93% identical photons.
A research team investigated the microscopic scale of furniture movement, finding moiré patterns reduce static friction when objects rotate simultaneously. This discovery could lead to ultra-low friction micro-machines.
Physicists confirm quark mass existence via observation of dead cone effect, a phenomenon predicting quarks with higher masses emit fewer gluons. The effect, predicted 30 years ago, involves a 'dead cone' where gluons do not appear at lower energies and larger quark masses.
Researchers at New Jersey Institute of Technology have identified the precise location where solar flares accelerate particles to near-light speed. The discovery sheds light on fundamental processes of particle acceleration in the universe, offering new insights into space weather events.
Daya Bay Reactor Neutrino Experiment has produced the most precise measurement yet of theta13, a key parameter for understanding how neutrinos change their 'flavor.' The result will help physicists explore mysteries surrounding matter and the universe.
Researchers found that 80% of infections at superspreading events came from just 4% of infected individuals, known as index cases, who carried high viral loads. The study also identified the occupancy and ventilation in social contact settings as key factors driving variability in superspreader events.
Two graduate students from Virginia universities selected to receive support through the Office of Science Graduate Student Research program will conduct research at Jefferson Lab. The program provides world-class training and access to state-of-the-art facilities, aiming to prepare students for critical jobs in science and innovation.
Researchers detect a unique binding mechanism between a small ion and a gigantic Rydberg atom, defying classical expectations of particle size. The molecular bond forms when the charged ion deforms the large Rydberg atom, allowing it to form an unusual molecule.
Researchers at Dartmouth have built the world's first superfluid circuit using pairs of ultracold electron-like atoms, allowing for controlled exploration of exotic materials like superconductors. The circuit enables analysis of electron movement in highly controllable settings.
A study by Bocconi University researchers finds that employees are more likely to share internal knowledge when they feel part of an organization, but rather pass it to competitors. The study's findings suggest that managing organizational climate can prevent knowledge spillovers and maintain competitive advantage.
Physicists at the University of Bayreuth introduce power functional theory to precisely describe many-particle systems' dynamics over time. The theory generalizes classical density functional theory and applies to thermal disequilibrium systems.
A POSTECH research team has developed a platform that can control and measure the properties of solid materials with light. This breakthrough enables the manipulation of quantum states in solids, which can be effectively used in quantum systems.
Physicists from Cracow-based Institute of Nuclear Physics found that the proton's charm structure might affect our understanding of cosmic neutrinos. Recent LHCb detector measurements support a model with a higher charm quark contribution, which could mislead astronomers about high-energy neutrino origins.
Researchers from Mexico and Poland discover fragments of a proton's interior exhibit maximum entanglement, affecting theoretical predictions. The study relates this phenomenon to concepts like entropy and temperature, previously linked to exotic objects like black holes.
A study by Sibani Lisa Biswal and Kedar Joshi shows that magnetically driven colloidal suspensions exhibit behavior consistent with the principles of classical thermodynamics, including vapor pressure, viscosity, and surface tension. The researchers' findings have implications for designing materials with reconfigurable properties.
Researchers at Brookhaven Lab propose a cosmological phase transition as the key to supermassive black hole formation in the early universe. This process, facilitated by ultralight dark matter particles, enabled efficient collapse of matter into black holes.
Researchers using machine learning methods risk underestimating uncertainties in their final results due to decorrelation with imperfections in simulations. This could weaken or bias classifier algorithms' ability to identify fundamental particles.