Articles tagged with Neutrinos
The Super-Kamiokande observatory has detected an indication of the Diffuse Supernova Neutrino Background (DSNB), a flux of neutrinos from many different supernovae over time. This breakthrough achievement provides a crucial clue for understanding the history of cosmic star formation and nucleosynthesis.
New simulations reveal that neutrino fast flavor conversion affects core-collapse supernovae explosion mechanism, with impact depending on progenitor mass. The findings highlight the importance of accurate neutrino transport and provide a robust argument for FFC's role in CCSNe.
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.
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.
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.
A new study suggests that the ultra-high-energy neutrino may have originated from a population of blazars, which could provide a plausible explanation for the rare phenomenon. The researchers used a combination of simulations and observations from various instruments to test their hypothesis.
A new study has created a comprehensive model of neutrino mapping, revealing that most stars in the Milky Way generate and emit these ghost particles. The research provides valuable insights into the universe, offering a unique way to explore cosmic phenomena.
Experimental particle physicists at Fermilab's MicroBooNE experiment found evidence against a 'sterile' type of neutrino, which was previously thought to be responsible for anomalous results. The research hones the search for alternative explanations, shedding light on fundamental physics questions.
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.
A team of scientists from Rutgers University has debunked a decades-old theory about a mysterious particle using data from the MicroBooNE experiment. The study found no sign of sterile neutrinos, which were proposed to explain strange neutrino behavior, closing the door on one popular explanation.
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.
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.
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.
Neutrino experiments from US and Japan have combined their data to measure precise neutrino behavior, bringing scientists closer to understanding how matter was favored over antimatter in the early universe. The results shed light on neutrino oscillation, a phenomenon that could help solve the missing antimatter problem.
Ben Jones, UTA physics professor, receives $1.3 million grant to search for rare processes involving neutrinos. The grant supports his project on neutrinoless double electron capture in argon or krypton gases.
The scientific program includes presentations on new research in exotic and radioactive nuclei, quark-gluon plasma, nucleosynthesis, neutrinos, and more. Registration is now open for news media with valid APS press credentials.
Researchers found that neutrino flavor transformations alter the composition and signals of what's left after a neutron star collision, impacting the creation of heavy metals and rare earth elements. The simulations also influenced the matter ejected from the merger and electromagnetic emissions detectable from Earth.
Recent detection of a record-setting neutrino may be the first evidence of Hawking radiation from a primordial black hole. If confirmed, it would indicate that PBHs make up most of dark matter in the universe.
Researchers at MIT introduce the concept of a neutrino laser that uses cooled radioactive atoms to produce amplified neutrino beams. By cooling rubidium-83 to near absolute zero, the team predicts accelerated radioactive decay and production of neutrinos. This innovation could lead to new applications in medicine and communication.
The study finds that dark energy's influence on the universe is changing over cosmic time, which can be understood as a signal of matter being converted into dark energy. The data also provides evidence for neutrinos having mass greater than zero, improving previous interpretations.
Researchers at Max Planck Institute for Nuclear Physics have successfully detected antineutrinos from a nuclear reactor using the CONUS+ experiment. The detection uses Coherent Elastic Neutrino-Nucleus Scattering (CEvNS), allowing for improved sensitivity to new physics beyond the Standard Model.
A team of researchers has proposed that massive star collapse can create a 'neutrino collider,' leading to dramatic changes in supernova outcomes. This process could produce a neutron core or even a black hole remnant, depending on the presence of secret neutrino interactions.
Researchers led by Shuo Zhang used multi-wavelength studies to identify pulsar wind nebulae as potential cosmic ray sources. The findings could help unlock fundamental questions in physics, such as galaxy evolution and dark matter.
Physicist Matthias Schott is developing a dedicated neutrino detector for the LHC that can handle high data transfer rates, enabling researchers to study high-energy neutrinos. The detector uses GridPix technology and may reveal new insights into neutrino interactions, including potential evidence of anti-tau neutrinos.
The KATRIN experiment has achieved a precision measurement of the neutrino mass, setting an upper limit of 0.45 electron volts per square centimeter. This result is a significant reduction from previous measurements and demonstrates the experiment's ability to detect the elusive neutrino particles.
The Super-Kamiokande and T2K Collaborations present a joint measurement of neutrino oscillation parameters using atmospheric and beam neutrino data. The analysis finds a 1.9𝜎 exclusion of 𝐶𝑃 conservation and a 1.2𝜎 exclusion of the inverted mass ordering.
Robert McKeown, a distinguished service award recipient, has made significant contributions to nuclear physics over the past 50 years. He supervised 14 Ph.D. students and educated thousands of people worldwide through teaching and lecturing at prestigious institutions.
Researchers at GSI Helmholtzzentrum für Schwerionenforschung GmbH measure half-life of thallium-205 ion decay to understand Sun's long-term stability and its connection to Earth's climate. The experiment, known as LOREX, provides insights into the Sun's evolutionary history.
Dr. Zewei Xiong has received an ERC Starting Grant to study collective neutrino oscillations in supernovae and neutron-star mergers. His project NeuTrAE aims to clarify lingering puzzles regarding neutrino flavor evolution, a crucial aspect of particle and nuclear astrophysics.
Mary Bishai, a Brookhaven physicist, has been recognized as a Distinguished Scientist Fellow by the DOE Office of Science. Her work on understanding neutrinos' properties has led to extraordinary leadership and service to the particle physics community. As a mentor, she is guiding the next generation of researchers.
A team of researchers from Chiba University successfully measured the interaction rates of high-energy electron and muon neutrinos using the FASERν detector at the Large Hadron Collider. The study marked the first direct observation of these interactions at a particle collider, providing new insights into particle physics.
Scientists will study neutrinos to solve big questions about the universe. UTA is building portions of two detectors in South Dakota and training students to help with the project.
Researchers from the US and Germany report a realistic contender to measure the elusive neutrino mass using Cyclotron Radiation Emission Spectroscopy. The project tracks electrons generated by beta decay to reveal the neutrino mass, aiming for scalability beyond existing technology.
Researchers have found preliminary evidence supporting quantum gravity models that predict an energy-dependent reduction in speed of ultrarelativistic particles. This effect, expected to be small, has been observed in gamma-ray bursts and ultra-high-energy neutrinos detected by Fermi and IceCube telescopes.
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.
Researchers from the University of Rochester and MINERvA collaboration used beams of neutrinos at Fermilab to investigate proton structure. This technique offers a new view on measuring protons using neutrino scattering, providing insights into nuclear effects and improving future measurements of neutrino properties.
Researchers improved the Kitaev spin liquid model by freezing electrons in space, allowing only spin contributions at low temperatures. The study successfully explained experimental data and predicted a topological phase in the presence of an external magnetic field.
An international research team has shed light on the origin of neutrinos, shedding new evidence that blazars can be confidently associated with astrophysical neutrinos. The study utilizes neutrino data from the IceCube Neutrino Observatory and BZCat catalogue to establish a connection between high-energy neutrinos and galactic nuclei.
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.
Physicists are using a deposit of nearly pure argon, extracted from southwest Colorado, to search for answers about the universe's dark matter. The argon is separated from carbon dioxide and shipped to Italy for use in the DarkSide-20k detector.
Basudeb Dasgupta's study shows that collective oscillations can occur only if the spectra of two neutrino flavors cross over at some energy or emission angle. This result guarantees that observation of neutrino oscillation instabilities will reveal new information from deep within the star.
Neutrinos, produced by astrophysical sources and artificial means, interact subtly with matter due to their chargelessness and masslessness. The study of neutrinos challenges our understanding of particle physics, particularly the phenomenon of neutrino oscillation, where particles transition between three flavours.
The KATRIN experiment has achieved a new upper limit on neutrino mass of 0.8 eV, entering the cosmologically and particle-physically important sub-eV mass range. This is the first time that a direct neutrino mass experiment has reached this sensitivity.
Researchers found that a supermassive black hole slurping down a star generated nowhere near the energy needed for the neutrino. The outflow of material was equivalent to the Sun's radiated energy over 30 million years, but lacked the necessary power.
Two small-scale experiments, a quantum dark matter detector and a particle accelerator, aim to detect sterile neutrinos. If successful, they could improve cancer treatment by producing radioactive isotopes.
A $1.2 million NSF EPSCoR grant will establish a new faculty position, support postdoctoral researchers and graduate students, and fund work on neutrino detection at IceCube and RNO-G observatories. The research aims to improve calibration of massive instruments and develop advanced data analysis techniques.
Researchers linked a high-energy neutrino to an object outside our galaxy, tracing it back to a black hole tearing apart a star in a rare cataclysmic occurrence called a tidal disruption event. The findings provide insights into how these phenomena work and challenge previous expectations about when and how neutrinos are produced.
UK scientists have started production of key equipment for the international Deep Underground Neutrino Experiment (DUNE), a particle physics experiment studying elusive particles called neutrinos. The detectors will capture neutrino interactions in a liquid argon gas detector, with 150 APAs built with millimeter precision.
The COHERENT experiment at Oak Ridge National Laboratory has established a new kind of neutrino interaction, coherent elastic neutrino-nucleus scattering. The discovery confirms earlier observations and provides constraints on alternative theoretical models, shedding light on the universe's nature.
A new simulation approach accurately depicts the role of elusive particles called neutrinos in the evolution of the universe. The results show that neutrinos suppress dark matter clustering and are correlated with massive galaxy clusters.
The Borexino experiment has successfully measured neutrinos from the sun's second fusion process, the Carbon Nitrogen Oxygen cycle (CNO cycle), confirming theoretical predictions. The findings provide evidence on the metallicity of the sun and have implications for understanding the properties of stars.
The Borexino collaboration has successfully experimentally confirmed the Bethe-Weizsäcker cycle, a crucial component of our Sun's nuclear fusion reactions. This achievement marks a significant breakthrough in understanding solar energy production and neutrino behavior.
The Borexino Collaboration has directly detected CNO cycle neutrinos in the Sun for the first time, providing conclusive proof of this fusion process. The researchers estimated that CNO neutrinos account for about 1% of the energy produced by the Sun.
Researchers at Argonne National Laboratory develop nuclear physics model to study neutrino interactions, shedding light on why neutrinos change flavors during space or matter travel. The team's findings are crucial for understanding the universe's matter-antimatter imbalance and fundamental questions about its origins.
Sara Buson aims to confirm blazars as the most important extragalactic neutrino sources, revolutionizing our understanding of blazar astrophysics. She will analyze a large sample of observations and physical data to establish a new framework for multimessenger studies.
Physicists at Michigan State University's Facility for Rare Isotope Beams have developed a new method to model neutrinoless double-beta decay, a yet-unconfirmed rare nuclear process with significant implications for particle physics and cosmology. The novel approach, known as the In-Medium Generator-Coordinate Method, enables controlle...
The University of Jyvaskyla's nuclear theory group, in collaboration with the EXO-200 experiment, has made significant progress in solving the long-standing reactor antineutrino anomaly. By measuring the electron spectral shape of beta decay, they have verified a theoretical hypothesis and supported the HKSS flux model.
Research by University of Sheffield physicists indicates a difference in neutrino and antineutrino behavior, which could help explain the universe's matter-matter asymmetry. The T2K experiment strengthens previous observations and paves the way for future discoveries.