Particle Physics
Articles tagged with Particle Physics
The ionic path to all-solid-state batteries
Muon g-2 collaboration with strong contribution from Mainz wins Breakthrough Prize in Fundamental Physics
Radiation monitoring at synchrotron sheds light on exotic particle physics
A Tokyo Metropolitan University scientist has proposed using standard synchrotron facilities to study dark photons, a key step in the hunt for dark matter. The method uses radiation safety monitoring data to estimate limits on dark photon properties.
Neutrinos caught on camera
A new detector technology has been developed to track elementary particles in large volumes of unsegmented scintillator material. The system uses a plenoptic camera and single-photon avalanche diode array sensors to achieve high-resolution 3D tracking, even in photon-starved conditions.
Jülich supercomputers resolve discrepancy in Muon’s magnetic moment
An international team of physicists has achieved unprecedented accuracy in computing the magnetic properties of the muon using Jülich supercomputers. The result resolves long-standing uncertainty between theory and experiment, achieving a precision that reduces the uncertainty by a factor of 1.6.
Gram-scale photocatalytic benzyl alcohol oxidation via photon-heteroatom jointly promoted redox cycling over nickel-based Pickering emulsion
A novel nickel-based Pickering emulsion catalyst enables gram-scale synthesis of high-purity benzaldehyde with co-produced hydrogen, offering a sustainable alternative to traditional fine chemical synthesis. The synergistic effect of photon-heteroatom jointly promoted redox cycling accelerates the dehydrogenation reaction.
Physicists solve riddle that has puzzled scientists for decades
An international team of physicists has achieved a breakthrough in understanding the muon's magnetic moment, resolving a decades-long discrepancy between theory and experiment. The study delivers the most precise calculation to date of a key component underpinning the muon's magnetism, agreeing with experimental measurements within jus...
Stretching and squeezing diamond opens new path for ultra-precise quantum sensors
Researchers discovered a way to tune the quantum properties of tiny defects in diamond by stretching or compressing the crystal, enabling next-generation sensors with unprecedented precision. The silicon-vacancy center, a promising building block for quantum devices, responds predictably to mechanical deformation.
Dark matter could explain earliest supermassive black holes
A study led by University of California, Riverside graduate student Yash Aggarwal suggests that dark matter decays could have seeded the direct collapse of galaxies into giant black holes. The research found that a window of dark matter masses between 24 and 27 electronvolts could produce conditions for black hole formation.
Bright quantum light emission achieved at room temperature in 2D semiconductors
Researchers have successfully created a high-efficiency quantum light source that emits bright lights even at room temperature using 2D semiconductors. The achievement is made possible by confining excitons in a tiny region via nanohole-induced confinement and neutralizing excess charges.
Researchers reveal new method for dialing up superconductivity
Researchers at Ohio State University have discovered a new method for controlling superconductivity by manipulating the surrounding environment. By adjusting electron interactions, they were able to switch the material's superconductivity on and off, revealing a simpler way to control atomic power behind superconductivity.
Evidence of an exotic atomic nucleus state
Researchers have successfully detected an exotic atomic nucleus state, bound solely by the strong interaction, in a carbon isotope experiment. The discovery sheds new light on the properties of this fundamental force and its role in shaping particle masses.
Physicists zero in on the mass of the fundamental W boson particle
A team of physicists has confirmed the mass of the fundamental W boson particle using an ultra-precise measurement, reaffirming the Standard Model's predictions. The new measurement is based on over 1 billion proton-colliding events produced by the Large Hadron Collider and is in line with previous experiments.
Experimental indication of a new type of mesic nuclei
Researchers have observed evidence of a new type of mesic nucleus, which could provide insight into the vacuum structure and mass generation mechanism. The discovery was made using a high-precision experiment at the GSI Helmholtzzentrum für Schwerionenforschung, Germany.
Quantum researchers engineer extremely precise phonon lasers
Researchers at the University of Rochester have developed a squeezed phonon laser that precisely controls individual particles of vibration or sound, allowing for accurate measurements of gravity and other forces. This technology has the potential to create more accurate, 'unjammable' navigation systems without relying on satellites.
ECHo collaboration: Hunting for the neutrino mass with “cool” detectors
Researchers from Heidelberg University and international partners have optimized their ECHo experiments to determine the neutrino mass. They achieved a lower upper limit on the neutrino mass scale than previous similar experiments, paving the way for future large-scale investigations.
‘Spin-flip’ in metal complexes can help solar cells leap beyond limits
Researchers successfully captured singlet-fission-amplified excitons with a molybdenum-based emitter, achieving 130% quantum yield and pushing the limits of solar cell efficiency. The team used a metal complex called 'spin-flip' emitter to harvest multiplied energy from singlet fission.
Boron arsenide semiconductor sets record in quantum vibrations
Researchers discovered a new material, boron arsenide, that exhibits record-high coherence of optical phonons due to suppression of three-phonon scattering. This finding holds promise for the development of quantum phononics and could aid in managing excess heat in electronics.
University of Manchester scientists play key role in discovery of new heavy-proton particle at CERN
Scientists from the University of Manchester led the discovery of the new Ξcc+- (Xi-cc-plus) particle, a heavy proton-like particle containing two charm quarks and one down quark. The particle was identified using the upgraded LHCb detector and has a mass of 3619.97 MeV/c².
Rice hosts first-of-its-kind workshop exploring how AI can accelerate discoveries in major neutrino experiment
Researchers at Rice University explored how artificial intelligence and machine learning can accelerate discoveries in the Deep Underground Neutrino Experiment (DUNE). The workshop aimed to integrate AI techniques into the massive computing ecosystem powering the experiment.
Tova Holmes and Larry Lee selected as Fermilab Distinguished Researchers
Tova Holmes and Larry Lee will work on the CMS upgrade and search for new particles at Fermilab, while also promoting the laboratory's Distinguished Researcher program. They aim to strengthen connections between the university and the national lab, bringing students and postdocs to the lab for hands-on learning opportunities.
Physicists observe rare nuclear isomer in ytterbium-150 for first time, advancing nuclear structure research
Researchers observe rare nuclear isomer in ytterbium-150, measuring its half-life and establishing its decay scheme. The study reveals an isomeric relay mechanism, shifting the configuration of nuclei within the 10+ isomeric chain, extending its persistence into the proton drip line region.
Press program now available for the world's largest physics meeting
The Global Physics Summit will feature over 12,000 individual presentations on new research in astrophysics, particle physics, and quantum information science. Registered journalists and public information officers will receive daily emails with information during the meeting.
Better understanding of the unknown leads to more accurate collision simulations
Physicists have developed a more accurate method for estimating the impact of calculations that are not performed in high-energy particle collisions. The new approach uses perturbative calculations to reduce uncertainties present in previous simulations.
University celebrates full membership at world’s largest particle physics lab
The University of Bath has been welcomed as a full member of the CMS Collaboration at CERN, gaining access to latest data, facilities, and computing infrastructure. The partnership strengthens the university's research impact in particle physics, enabling advancements in detector upgrades and cooling systems.
Tin isotopes reveal clues to nuclear stability
Experiments with tin isotopes rich in neutrons provide key physics insights into nuclear stability and element formation. The results help theoretical physicists improve models and establish the doubly-magic nature of tin-132.
Solving the mystery that could help fusion reactors survive decades of use
Researchers used computer simulations to study the behavior of exhaust particles in tokamaks. They found that the toroidal rotation of plasma plays a key role in determining where particles land in the machine's exhaust system. This discovery could help engineers design divertors better equipped to handle intense heat.
Breakthrough proton-conducting ceramic material for clean energy
A new ceramic material overcomes long-standing limits in proton conductivity, achieving record-high performance at intermediate temperatures. The innovative donor co-doping strategy combines increased proton concentration and mobility with chemical stability under various environments.
Global Physics Photowalk winners announced
The Interactions Collaboration has selected top three photographs from hundreds of submissions by amateur and professional photographers worldwide. Marco Donghia's image of a researcher at the CryOgenic Laboratory for Detectors was chosen as first place, praised for its clear storytelling and masterful use of light.
Using muons to uncover the behavior of superconducting electron pairs
A team of researchers led by Yoshiteru Maeno used magnetic resonance based on muons to investigate the superconducting state of strontium ruthenate. They discovered that the material exhibits spin-singlet superconductivity, which provides crucial insights into the behavior of unconventional superconductors.
Scientists discover “levitating” time crystals that you can hold in your hand
Researchers at New York University have created a new type of time crystal that levitates on a cushion of sound, defying Newton's Third Law. This breakthrough has significant implications for technology and industry, and provides insights into biological clocks and biochemical networks.
VIP-2 experiment narrows the search for exotic physics beyond the Pauli exclusion principle
The VIP-2 experiment, a highly sensitive test of the Pauli exclusion principle, found no evidence of its violation. The team set the strongest limits yet on possible violations involving electrons in atomic systems, constraining speculative theories beyond the Standard Model.
Last chance to get a hotel discount for the world’s largest physics meeting
The American Physical Society's Global Physics Summit will feature over 10,000 individual presentations on new research in astrophysics and particle physics. Attendees can book discounted hotel rates near the Colorado Convention Center until February 12 to receive a discount.
Terahertz microscope reveals the motion of superconducting electrons
Physicists have developed a new terahertz microscope that allows them to observe quantum vibrations in superconducting materials for the first time. The microscope enables researchers to study properties that could lead to room-temperature superconductors and identify materials that emit and receive terahertz radiation.
Cluster radioactivity in extreme laser fields: A theoretical exploration
Research investigates the influence of strong laser fields on nuclear decay lifetimes, altering nuclear structure and properties. This study provides valuable insights into laser-nucleus interactions and holds promise for applications in the nuclear energy sector.
Thermodynamics of heavy quarkonium in a Bayesian holographic QCD model
The study explores the dissociation of heavy quarkonium in the QGP medium using a Bayesian holographic QCD model, revealing its deconfinement mechanism. Key findings include the influence of temperature and chemical potential on thermodynamic properties and dissociation behavior.
The measurement of the energy correlations between two 252Cf prompt fission neutrons
Researchers measured energy correlations between two 252Cf prompt fission neutrons, finding a positive correlation at 180° and a negative correlation at 90°. These findings are crucial for developing and verifying fission physics theories, and should be considered in neutron coincidence and multiplication measurement techniques.
A 100-fold leap into the unknown: a new search for muonium conversion into antimuonium
The Muonium-to-Antimuonium Conversion Experiment (MACE) aims to detect the rare conversion of muonium into antimuonium, a process that could reveal new physics. The experiment seeks to improve upon the last experimental limit by more than two orders of magnitude and target a conversion probability as low as 10^-13.
Atomic spins set quantum fluid in motion
A team of researchers has observed the Einstein–de Haas effect in a Bose–Einstein condensate, demonstrating the transfer of angular momentum from atomic spins to fluid motion. This finding highlights the conservation of angular momentum between microscopic spin and macroscopic mechanical rotation in the quantum world.
Study: The infant universe’s “primordial soup” was actually soupy
Physicists at MIT observed clear signs that quarks create wakes as they speed through the plasma, confirming the plasma behaves like a liquid. This finding provides new insights into the properties of the quark-gluon plasma and its behavior in the early universe.
Scientists establish a means of using lasers to increase muon lifetime
Researchers at the University of Plymouth have discovered a method to increase muon lifetime using intense laser pulses. By applying quantum interference principles, they aim to develop new scientific facilities that utilize muons instead of electrons.
Heidelberg physicists bridge worlds of quantum matter
Researchers at Heidelberg University developed a new theoretical framework that connects two fundamental domains of modern quantum physics, describing the emergence of quasiparticles in systems with both mobile and static impurities. The new theory explains how quasiparticles form even in systems with extremely heavy impurities.
Observing positronium beam as a quantum matter wave for the first time
Researchers at Tokyo University of Science demonstrate matter-wave diffraction in a short-lived electron-positron atom, marking a major advancement in fundamental physics. The findings pave the way for new research using positronium and could enable sensitive tests of gravity.
World's largest physics conference to be held in Denver and online this March
The American Physical Society's Global Physics Summit will convene over 14,000 physicists worldwide for groundbreaking research presentations. The event will feature both in-person and online experiences, including scientific sessions, exhibits, and networking events.
Linear relationship between reactivity and the reciprocal of uranium concentration in thermal-spectrum molten salt reactors
Researchers have discovered a linear relationship between reactivity and the reciprocal of uranium concentration in thermal-spectrum molten salt reactors. This finding has significant implications for criticality calculations, fuel loading prediction, and reactivity measurement.
HALIMA: Anovel Hybrid Array for nuclear structure research
HALIMA, a hybrid array for lifetime measurement of neutron-rich nuclei at IMP, enables precise sub-nanosecond measurements using the four-fold FF/β-Ge-LaBr <sub>3 </sub>(Ce)-LaBr <sub>3 </sub>(Ce) coincidence technique. The system reduces Compton continuums and enhances selectivity via fission fragments implantation.
EAST Tokamak experiments exceed plasma density limit, offering new approach to fusion ignition
Researchers at EAST have successfully accessed a theorized 'density-free regime' for fusion plasmas, achieving stable operation at densities beyond conventional limits. This breakthrough provides new insights into overcoming one of the most persistent physical obstacles on the path toward nuclear fusion ignition.
Josephson junctions — quantum computing building blocks — are possible with only one superconductor, experiment confirms
Experimental evidence confirms that a single superconductor can induce electron pairing and synchronization in another material, enabling the creation of a Josephson junction with only one superconductor. This discovery has potential implications for topological superconductors and conventional quantum computers.
Anything-goes “anyons” may be at the root of surprising quantum experiments
Theoretical physicists at MIT propose that under certain conditions, magnetic material’s electrons could form quasiparticles called “anyons” that can flow together without friction. If confirmed, it would introduce a new form of superconductivity persisting in the presence of magnetism.
AI opens a new window into the hidden world of nuclear matter
Researchers from RIKEN and their international collaborators used deep learning techniques to analyze unexamined nuclear emulsion data and identified a new double-Lambda hypernucleus. This is the world's first AI-assisted observation of such an exotic nucleus, providing new insight into neutron star cores.
New PET imaging breakthrough expands possibilities
Researchers at Virginia Tech have developed a new method for attaching fluorine-18 to trifluoromethyl groups, enabling the tagging of previously inaccessible targets in PET scans. This breakthrough expands the range of molecules that can be imaged, potentially leading to earlier diagnoses and more targeted treatments for diseases.
New breakthrough in detecting ‘ghost particles’ from the Sun
Researchers have successfully detected the interaction of neutrinos with carbon atoms in a vast underground detector, marking a breakthrough in understanding stellar processes, nuclear fusion, and the universe. The observation uses a unique 'delayed coincidence' method to separate real neutrino interactions from background noise.
MicroBooNE finds no sign of light sterile neutrinos
The MicroBooNE collaboration has ruled out the possibility of a light sterile neutrino, a hypothetical particle that had long been speculated as a solution to open questions in particle physics. This result narrows the field of possibilities for explaining one of today's biggest puzzles in neutrino physics.
Scientists discover new nuclear “island” where magic numbers break down
Researchers have discovered a new 'Island of Inversion' in the most symmetric region of the nuclear chart, where protons and neutrons equal each other. This finding challenges long-held assumptions about structural inversions and provides insights into fundamental forces that bind matter together.
LHC data confirm validity of a new model of hadron production – and test the foundations of quantum mechanics
The LHC accelerator confirms an improved model of proton collisions, with implications for our understanding of quantum mechanics. The generalized dipole model describes existing data more accurately and works well in a wider range of energies.
How Ramanujan’s formulae for pi connect to modern high energy physics
Physicists discovered connections between Ramanujan's formulae for pi and fundamental physics theories like conformal field theories. The formulas, developed in the early 20th century, yield efficient calculations for phenomena like turbulence and black holes.
Long-standing puzzle in electron scattering deepens with new measurement
A team of physicists at Johannes Gutenberg University Mainz has taken an important step toward answering the question of why lead behaves differently from other atomic nuclei when struck by electrons. The new measurement reveals unexpected behaviour in heavy nuclei, intensifying a long-standing puzzle that current theory cannot explain.
KATRIN tightens the net around the elusive sterile neutrino
The KATRIN collaboration presents the most precise direct search for sterile neutrinos through measurements of tritium β-decay. No sign of a sterile neutrino was found, excluding a large region of parameter space suggested by earlier anomalies. The result relies on distinct detection methods and complements oscillation experiments.
Particle accelerator waste could help produce cancer-fighting materials, study suggests
Researchers at the University of York have discovered a way to harness radiation from particle accelerator beam dumps to produce medical isotopes used in cancer diagnosis and treatment. Copper-67 is a rare isotope with limited global supplies, but this method could generate it without affecting main physics experiments.