Tag

Neutrino

All articles tagged with #neutrino

space16 days ago•85 min saved

Ghost-state neutrino from a black hole explosion could rewrite physics and dark matter

A 2023 ultra-energetic neutrino detected by KM3NeT may have originated from an exploding primordial black hole with a dark charge (a quasi-extremal PBH). If confirmed, such events could provide a complete catalog of subatomic particles and illuminate dark matter, but the idea is unproven and lacks corroborating detections. Researchers predict a first quasi-extremal PBH explosion could occur by 2035, highlighting a potential new window into particle physics and cosmology.

via Live Science|

#dark-charge #dark-matter #hawking-radiation

science19 days ago•3 min saved

Ultra‑Energy Neutrino Sparks Dark-Electron Black Hole Theory

A rare, ultrahigh-energy neutrino detected by KM3NeT in 2023 prompts a bold hypothesis: a quasi-extremal primordial black hole dumping dark electrons, triggering a rapid explosion that emits a narrow band of neutrinos; the idea, outlined in a Physical Review Letters preprint and set for formal publication, could explain why KM3NeT saw the event while IceCube did not, but it remains speculative pending more data and analysis.

via Gizmodo|

#dark-electrons #hawking-radiation #km3net

science20 days ago•5 min saved

Ultra-Powerful Neutrino Sparks Dark Matter Clue From Ancient Black Hole

A 220 PeV neutrino detected by KM3NeT's ARCA detector in February 2023 far exceeds energies from any accelerator and challenges existing models; a University of Massachusetts Amherst team suggests it came from a primordial black hole evaporating via Hawking radiation, offering a potential link to dark matter and a window into new physics beyond the Standard Model.

via The Daily Galaxy|

#astrophysics #dark-matter #km3net

space21 days ago•82 min saved

Ultra-energetic neutrino hints at exploding primordial black holes and dark matter link

A 2023 ultra-high-energy neutrino detected by KM3NeT is proposed to be debris from an exploding primordial black hole, potentially evidencing Hawking radiation and primordial black holes as dark matter candidates, though IceCube’s non-detection and a proposed dark-charge model for quasi-extremal black holes add complexity to the interpretation.

via Space|

#dark-matter #hawking-radiation #km3net

science21 days ago•7 min saved

Primordial Black Hole Bursts May Explain Ultra-Energetic Neutrinos

After a 2023 ultra-high-energy neutrino puzzled scientists, a UMass Amherst team proposes it originated from a primordial black hole explosion driven by Hawking radiation; their 'dark-charge' (quasi-extremal PBH) model could connect PBHs to dark matter and suggest these explosions may occur more often than thought, guiding future astrophysical searches.

via The Daily Galaxy|

#dark-charge #dark-matter #hawking-radiation

science2 months ago•2 min saved

Scientists Achieve First Observation of Neutrino Transmutation

Scientists at the SNO+ experiment have observed neutrino-induced transmutation of carbon-13 into nitrogen-13 for the first time, a rare event due to neutrinos' elusive nature, made possible by the large volume of liquid scintillator and the experiment's underground location.

via Hackaday|

#liquid-scintillator #neutrino #particle-physics

science2 months ago•42 min saved

MicroBooNE and KATRIN Find No Evidence for Light Sterile Neutrinos

The MicroBooNE experiment searched for light sterile neutrinos using two neutrino beams and found no evidence supporting their existence, thereby strongly constraining the parameter space that could explain previous anomalies observed in short-baseline neutrino experiments.

via Nature|

#microboone #neutrino #neutrino-oscillation

science3 months ago•6 min saved

Calorimetric Study Sets New Limit on Electron Neutrino Mass

The HOLMES experiment has set the most stringent upper limit on the electron neutrino mass at less than 27 eV/c² using a scalable calorimetric approach with microcalorimeters measuring holmium-163 decay, validating long-term experimental techniques and paving the way for future sub-eV sensitivity in neutrino mass measurements.

via Phys.org|

#calorimetric #electron-neutrino-mass #holmes

science4 months ago•4 min saved

Farthest Universe Particle Detected in Mediterranean Sea

Scientists using the KM3NeT underwater telescope in the Mediterranean Sea detected the most energetic cosmic neutrino ever recorded at 120 PeV, challenging existing theories and opening new avenues for understanding extreme astrophysical phenomena and cosmic particle acceleration.

via Evidence Network|

#cosmic-discovery #high-energy-particles #km3net

science6 months ago•4 min saved

Record-Breaking 'Ghost Particle' Hits Earth

Scientists detected a record-breaking 220 PeV neutrino using the KM3NeT detector deep in the Mediterranean Sea, marking the highest energy neutrino ever observed and opening new avenues in ultra-high-energy neutrino astronomy, though its exact origin remains uncertain.

via ScienceAlert|

#astronomy #cosmic-particle #km3net

science6 months ago•5 min saved

Study Finds Neutrino Masses Unlikely Linked to Dark Matter Interactions

A recent study comparing experimental neutrino data with theoretical models suggests that neutrino masses are unlikely to originate from interactions with dark matter, favoring more conventional particle physics explanations.

via Phys.org|

#dark-matter #dark-sector #neutrino

science8 months ago•3 min saved

Ghost Particle Traverses Earth, Possibly Originating from Dark Matter

A high-energy neutrino detected by the KM3NeT telescope in 2023 may have originated from dark matter decay, offering a new way to explore dark matter, though the most likely explanation remains a high-energy neutrino from a distant blazar. The event's unique detection, not seen by the IceCube Observatory, has sparked hypotheses about dark matter interactions, with further research expected as KM3NeT completes construction.

via Yahoo|

#astrophysics #dark-matter #high-energy-particle

science8 months ago•5 min saved

Scientists Detect Potential First Evidence of Dark Matter from Cosmic Particle

In February 2023, the KM3NeT underwater telescope detected an extremely high-energy particle that may be the first direct evidence of dark matter, possibly originating from a blazar. This discovery challenges existing understanding of cosmic particles and could open new avenues for dark matter research, though further verification is needed. The event's uniqueness and potential implications make it a significant development in astrophysics.

via ZME Science|

#astrophysics #cosmic-particle #dark-matter

science9 months ago•17 min saved

Neutrino Mass Mystery Shrinks Further

Recent experiments, particularly KATRIN, have set the tightest constraints yet on the mass of the electron neutrino, showing it can be no more than 0.45 eV/c², which has significant implications for understanding the universe's composition and the role of neutrinos in cosmic evolution. Despite these constraints, the exact mass of neutrinos remains unknown, and further research is needed to fully understand their properties and impact on cosmology.

via Big Think|

#cosmic-neutrino-background #katrin #mass

physics1 year ago•6 min saved

Unveiling the Mysteries of the Neutrino Fog

Two dark matter experiments, PandaX and XENON, have detected signals from solar neutrinos, known as the "neutrino fog," which could complicate future dark matter searches. These experiments, using liquid xenon detectors, observed coherent elastic neutrino-nucleus scattering (CEvNS) events, a process predicted to mimic dark matter signals. While the neutrino fog poses a potential challenge, it is not expected to significantly impact dark matter searches for at least a decade. The findings also open new avenues for neutrino research and standard-model testing.

via Physics|

#cevns #dark-matter #neutrino