Tag

Muon

All articles tagged with #muon

discoveries22 days ago•43 min saved

Atomic Cannon Tests Gravity on Muonium to Probe Second-Generation Matter

ETH Zurich and the Paul Scherrer Institute have produced a narrow, cold-like muonium beam inside superfluid helium, enabling a future atom-interferometry experiment to test how gravity acts on a second-generation particle. While the gravity of muonium has not yet been measured, the method could reach about 1% precision after roughly 100 days of measurements, extending tests of Einstein’s weak equivalence principle to new frontiers beyond ordinary matter.

via The Brighter Side of News|

#atom-interferometry #discoveries #equivalence-principle

physics2 months ago•11 min saved

Muon g-2 Mystery Reborn: Lattice QCD Aligns with Experiments, Old Data-Driven Predictions Clash

New lattice QCD calculations explain the muon g-2 excess without invoking new particles, aligning with Fermilab’s precise measurement and challenging the older data-driven predictions that relied on electron-positron collision data; at the same time, fresh VEPP-2000 pion-production results and divergent collider measurements renew tensions across experiments, hinting at either unknown particles or overlooked experimental details and underscoring four decades of conflicting data that physicists still need to resolve.

via Quanta Magazine|

#data-driven-method #g-2 #lattice-qcd

science5 months ago•9 min saved

Muon g-2 Mystery Reconciled as Standard Model Gains Ground

A long-standing puzzle about the muon's anomalous magnetic moment (g-2) is resolved by a new, ultra-precise lattice QCD calculation that aligns the Standard Model prediction with experimental measurements within half a standard deviation. The result removes the need for a hypothetical fifth force and reinforces quantum field theory as the foundation of particle physics, though it may still leave a narrow window for new physics to appear in future experiments.

via SciTechDaily|

#g-2 #lattice-qcd #muon

science5 months ago•9 min saved

Muon Moment Conforms to Theory, Dimming Hopes for New Physics

Penn State researchers using a high-precision, grid-based QCD calculation have shown the muon’s magnetic moment now matches Standard Model predictions to 11 digits (0.5 sigma), resolving a decades‑long discrepancy and cooling expectations for new physics beyond the Standard Model.

via Hackaday|

#lattice-qcd #muon #penn-state

science5 months ago•6 min saved

Muon mystery solved: precision calc keeps the Standard Model intact

A Nature paper using lattice QCD and hybrid simulations shows the muon's anomalous magnetic moment is consistent with the Standard Model within about half a standard deviation and 11 decimal places. The result suggests the earlier discrepancy hinting at a fifth force was a calculation artefact, not new physics, while tightening constraints on possible beyond‑SM explanations through a precise treatment of hadronic vacuum polarization.

via Ars Technica|

#hadronic-vacuum-polarization #lattice-qcd #muon

science1 year ago•4 min saved

Physicists Resolve 20-Year Muon Magnetic Mystery with Advanced Technology

Fermilab's precise measurement of the muon's magnetic 'wiggle' aligns closely with the Standard Model, suggesting no new exotic physics is involved, though the muon's behavior continues to be a key probe for potential new particles or forces.

via sciencealert.com|

#fermilab #g-factor #muon

science1 year ago•5 min saved

Muon g-2 Experiment Achieves Record Precision, Easing Physics Puzzle

Physicists used antimatter, supercomputers, and giant magnets to resolve a 20-year-old mystery about the muon's magnetism, which could have indicated new physics related to dark matter. Recent experiments and simulations have clarified the discrepancy, but the question of potential new particles like the dark photon remains open, offering clues about dark matter.

via The Conversation|

#antimatter #dark-matter #muon

physics2 years ago•6 min saved

Redefining Physics: The Muon Mystery and the Power of Decimal Places

The discrepancy between the theoretical and experimental values of the muon's magnetic moment has puzzled scientists for decades, potentially indicating interactions with unknown particles or forces. Recent research using advanced quantum simulations has shed light on these discrepancies, offering insights into the fundamental properties of muons and their interactions in particle physics. The study identified the origin of the discrepancies and provided new insights into the muon's magnetic moment, which could contribute to the investigation of dark matter and other aspects of new physics.

via SciTechDaily|

#magnetic-moment #muon #particle-physics

science2 years ago•4 min saved

Breakthrough Measurement: Muon g-2 Experiment Determines Anomalous Magnetic Moment with Unprecedented Precision

The Muon g-2 collaboration at Fermilab has achieved the world's most precise measurement of the magnetic moment of the muon, reducing the error by over a factor of 2 compared to their previous measurement. The measurement is consistent with previous results and aims to explore potential physics beyond the Standard Model. The researchers are analyzing their final data set, which will include six years of data, to confirm whether the difference is a statistical fluke or caused by physics beyond the Standard Model.

via Phys.org|

#anomalous-magnetic-moment #magnetic-moment #muon

science3 years ago•13 min saved

"The Muon's Unforeseen Impact on Particle Physics"

The discovery of the muon, an unstable particle with the same charge but hundreds of times the mass of an electron, revolutionized particle physics. In the early 1930s, anomalies in the periodic table and beta decays led to the hypothesis of the neutrino and the discovery of the positron. Physicist Victor Hess's experiments with an electroscope in a hot air balloon flight in 1912 revealed the existence of cosmic rays and paved the way for the detection of muons. Muons, which are produced by cosmic ray showers, were found to be real and relatively common. The muon's existence challenged the understanding of matter and led to the discovery of multiple generations of particles. Additionally, the muon demonstrated the effects of time dilation predicted by Einstein's theory of relativity. Controlling and manipulating muons could unlock new frontiers in experimental particle physics and potentially lead to the discovery of a fifth fundamental force of nature.

via Big Think|

#cosmic-rays #muon #particle-physics

technology3 years ago•3 min saved

Revolutionary navigation system operates without GPS.

Researchers at the University of Tokyo have developed a new navigation system called the muometric positioning system (muPS) that tracks subatomic particles called muons, which are created by collisions between cosmic rays and particles in Earth’s atmosphere. Unlike GPS, muPS works underground, indoors, and underwater. The system requires a receiver and multiple reference detectors positioned above it to triangulate the location of the receiver. The team demonstrated a wireless version of the tech, but the current accuracy is between 2 meters and 25 meters, with a range of up to 100 meters, which is still far from practical. Incorporating chip-scale atomic clocks (CSAC) into muPS could enable real-time measurements at one-meter accuracy.

via Freethink|

#accuracy #gps #muon