Articles tagged with Antimatter
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.
Researchers at TUM have discovered that deuterons and antideuterons are formed through the decay of highly energetic particle states, releasing protons and neutrons necessary for their formation. This finding improves models of particle formation and could provide clues about dark matter.
Physicists from Swansea University have developed a groundbreaking method for producing and trapping antihydrogen, allowing for the record trapping of 15,000 atoms in under seven hours. This breakthrough could help answer the question of why there is such an imbalance between matter and antimatter.
International physics experiments suggest neutrinos may have tipped the balance in favor of matter over antimatter. Neutrinos' unique oscillation behavior could have led to an imbalance in the early universe.
Combining data from T2K and NOvA experiments, MSU researchers provide precise measurements of neutrino properties, including oscillation behavior and mass ordering. The results shed new light on the mystery of how the universe evolved, with implications for theories of particle behavior.
Researchers developed a new method to probe an atom's nucleus using its own electrons as messengers within a molecule. They measured the energy of electrons whizzing around a radium atom in a molecule, detecting a slight energy shift and analyzing it to sense the internal structure of the nucleus.
Physicists have analyzed how neutrinos change 'flavor' as they travel through the cosmos, gaining insights into their masses and evolution. The study's findings hint at possible Charge-Parity violation in neutrinos and their antimatter counterparts, with researchers seeking more data to answer fundamental questions about the universe.
Japanese physicists have shown that knots can arise in a realistic particle physics framework, potentially explaining the origin of the universe's matter surplus. By combining two long-studied extensions of the Standard Model, the team found a stable knot configuration that could have formed and dominated in the early universe.
The BASE collaboration successfully relocated protons outside an antimatter laboratory using an autonomous Penning trap system. The technology enables low-energy antiprotons to be transported to high-precision laboratories, allowing for stringent matter-antimatter comparisons.
A recent study suggests that the observation of antihelium nuclei in cosmic rays may be consistent with the existence of WIMP particles, which could make up dark matter. The detection of two distinct isotopes, antihelium-3 and -4, is particularly intriguing as heavier nuclei are unlikely to be produced through natural processes.
Researchers used a retrofitted U2 spy plane to detect gamma radiation in large tropical thunderstorms. Over 9 of 10 flights yielded observations, suggesting more than half of all thunderstorms in the tropics are radioactive.
Researchers at Brookhaven National Laboratory's STAR Collaboration have discovered a new kind of antimatter nucleus, antihyperhydrogen-4, composed of four antimatter particles. The discovery was made using the Relativistic Heavy Ion Collider and analyzed details of collision debris.
Researchers from Chinese Academy of Sciences create new antimatter nucleus and study its properties. They also find no significant difference between matter and antimatter lifetimes.
Researchers at Tokyo University of Science have discovered a method to generate molecular ions from an ionic crystal by bombarding it with positrons. This breakthrough could lead to new applications in materials science, cancer therapy, and quantum computing.
Researchers confirmed that antimatter falls under the influence of gravity, ruling out gravitational repulsion as a cause for its absence in the universe. The study used an antihydrogen experiment to observe individual atoms taking a downward path, providing a definitive answer to long-standing questions about antimatter's behavior.
A new experiment at CERN has shown that gravity pulls antimatter downward, eliminating the possibility of antigravity. The gravitational acceleration of antimatter is close to that for normal matter on Earth, with a value within about 25% of normal gravity.
The Antihydrogen Laser Physics Apparatus (ALPHA) collaboration has measured gravity's effect on antimatter for the first time, confirming it falls downwards. This breakthrough could help explain the universe's lack of antimatter.
University of Florida astronomers discovered parity symmetry violation, a broken symmetry that explains why there's more matter than antimatter. This finding confirms the Big Bang theory and addresses the question of why something exists instead of nothing.
Researchers propose using precision data from upcoming experiments to test the cosmological collider effect and unravel the mystery of matter's origin. They suggest that leptogenesis, a well-known mechanism, could be used to explain the imbalance between matter and antimatter in the early universe.
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.
Scientists at RIKEN have found that matter and antimatter respond to gravity in the same way, within an accuracy of four times more precise than previous measures. This suggests that causality and locality hold in relativistic quantum field theories, potentially leading to new physics.
Two independent studies illuminate unexpected substructures in fundamental components of all matter. One study presents new evidence on the EMC effect by tagging spectator neutrons, offering direct insight into its origin. Meanwhile, a team from Fermilab found evidence that antimatter asymmetry plays a crucial role in nucleon properties.
Researchers with the CERN-based ALPHA collaboration have achieved world's first laser-based manipulation of antimatter, cooling it down to near absolute zero. This breakthrough enables precision tests to investigate antimatter characteristics and may shed light on fundamental symmetries of the Universe.
Scientists have published a new calculation to test for tiny differences between matter and antimatter, building on the 1963 Nobel Prize-winning experiment that observed a slight difference in kaon decays. The new calculation provides more accurate predictions for kaon decays and offers a way to search for effects beyond the Standard M...
Researchers have successfully recreated the process of creating matter from light using high-power lasers. The new method produces electron-positron pairs, mimicking conditions during the first minutes of the universe and providing an improved model for studying antimatter.
Researchers at Lancaster University's T2K experiment have found that almost half of the possible parameter values governing matter-antimatter asymmetry in the Universe have been disfavoured. This discovery suggests a basic property of neutrinos, one of the fundamental particles making up the Universe.
A new study by the T2K Collaboration confirms that neutrinos and antineutrinos behave differently, which could explain why matter persists over antimatter in the universe. This result brings scientists closer to answering the fundamental question of why the universe is dominated by matter.
A new paper suggests an 'axiogenesis' mechanism to explain the imbalance of matter and antimatter in the Universe. The proposed theory involves a rotation of the axion field, which could provide new research avenues for model building and studies of associated phenomenology.
Researchers propose axion as solution to three mysteries: matter-antimatter asymmetry, dark matter, and the strong CP problem. The axion's rotation creates a tiny excess of matter over antimatter, explaining why we exist.
Researchers are searching for an explanation for the imbalance between matter and antimatter in the universe. One theory suggests that this imbalance is a fundamental aspect of the cosmos, existing from the beginning of time. Physicists are investigating possibilities to extend the standard model of physics to include this phenomenon.
Researchers found a way to explain the lack of antimatter in the universe using the Two Higgs Doublet Model. Computer simulations showed that the universe was extremely out of equilibrium when the Higgs boson turned on, making it possible to produce matter without annihilating with antimatter.
Researchers from Yale, Harvard, and Northwestern University found that many theorized heavy particles may not exist, contradicting the Standard Model. The study's results suggest a smaller electron EDM, challenging alternative theories like supersymmetry and grand unified theories.
Benjamin Jones, a UTA physicist, has been awarded $750,000 to develop a sensor for detecting neutrinos, which could help explain the universe's matter-antimatter imbalance. The award supports his research on neutrinoless double beta decay and its potential to illuminate the origin of neutrino particles' small mass.
A Canadian-led research collaboration reports observing spectral lines from an antimatter atom for the first time in a study published in Nature. The team studied antihydrogen and found that its spectral lines match those of hydrogen very well, which could provide clues about the nature of matter and antimatter.
Researchers will present novel optical systems for detecting exoplanets and measuring the Sun's internal structure. A device called a laser frequency comb will also detect minute changes in light from the sun, enabling the detection of Earth-like planets around distant stars.
The discovery of pear-shaped nuclei in exotic atoms may hold the key to understanding the universe's matter-antimatter imbalance. The shape allows for stronger detection of a new interaction that could explain the discrepancy.
An international team of physicists has detected and measured the transformation of one type of neutrino into another, a finding that may help explain the universe's matter-antimatter imbalance. The discovery was made using the Daya Bay Reactor Neutrino Experiment in southern China.
Researchers at CERN have successfully manipulated antihydrogen atoms using microwaves, providing the world's first glimpse of an 'anti-atomic fingerprint.' This achievement demonstrates the feasibility of applying microwave spectroscopy to study antimatter atoms.
Researchers from Jena and Graz calculated the time evolution of the vacuum decay, revealing that particles of matter and antimatter behave in a novel self-focusing way. This breakthrough increases the possibility of discovering these particles in super strong electric fields.
The MINOS experiment's new result brings neutrino and antineutrino masses more closely in sync, lessening the potential ramifications of previous differences. This development is promising for future neutrino experiments like NOvA and MINOS+, which will further investigate and potentially close the mass difference.
An international research team, including CU-Boulder, has discovered that muon neutrinos can spontaneously change their flavor to electron neutrinos, a finding that may help explain why the universe is mostly made of matter rather than antimatter.
The ALPHA Collaboration has successfully stored a total of 309 antihydrogen atoms for up to 1,000 seconds, far exceeding the time ordinary atoms can be magnetically confined. This achievement opens a path to new experiments with antimatter and measures matter-antimatter asymmetry with precision.
A team of researchers from the University of Calgary has successfully trapped atomic antimatter, a significant breakthrough in understanding fundamental physics. The discovery opens up new possibilities for studying antimatter and its properties.
Researchers at UCR have isolated a collection of pure positronium atoms, a crucial step in creating a Bose-Einstein condensate (BEC) that could enable the production of fusion power. This achievement also brings scientists closer to developing gamma ray lasers with potential military and scientific applications.
A team of Iowa State physicists, including Soeren Prell, are part of an international research team testing the Kobayashi-Maskawa theory, which explains the difference between matter and antimatter. The BaBar experiment has confirmed the theory's predictions and provided insights into the universe's origins.
Researchers used data from NASA's Chandra X-ray Observatory and Compton Gamma Ray Observatory to study the Bullet Cluster, where two large clusters of galaxies collided. The results show that the antimatter fraction in the cluster is less than three parts per million, ruling out significant amounts of antimatter on scales of about 65 m...
Researchers investigated B-meson decays to understand the origin of matter's dominance over antimatter in the universe. The study reveals a significant discrepancy between theoretical models and observations, suggesting the presence of a new principle of physics.
CDF collaboration presents first precise measurement of matter-antimatter transition rate, oscillating at 3 trillion times per second, using Tevatron Run II data. Scientists hope to understand the early universe and role of exotic bottom quarks in its development.
Florida Institute of Technology scientist receives three-year grant to study high-energy proton-proton collisions and fundamental questions of nature. The grant is part of the CMS experiment at CERN, a large international collaboration involving over 1,850 scientists from 34 countries.