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Higgs Boson

All articles tagged with #higgs boson

CERN’s ATLAS confirms quantum entanglement in Higgs-boson decays
science23 days ago

CERN’s ATLAS confirms quantum entanglement in Higgs-boson decays

CERN’s ATLAS collaboration has reported strong evidence that Z bosons produced in Higgs-boson decays are quantum entangled. Using data from the Large Hadron Collider, researchers confirmed that these massive, short-lived particles exhibit entangled spin states, marking the first such observation for vector bosons at the electroweak scale. The result, published in Physical Review Letters, reaches a statistical significance of 4.7 sigma, falling just short of the 5-sigma threshold required for a formal discovery.

ATLAS Collaboration Confirms Quantum Entanglement in Higgs Boson Decays at CERN
science27 days ago

ATLAS Collaboration Confirms Quantum Entanglement in Higgs Boson Decays at CERN

Physicists at CERN’s Large Hadron Collider have confirmed that quantum entanglement persists in pairs of Z bosons produced by Higgs boson decays. Using the ATLAS detector, researchers analyzed data from proton collisions at 13 trillion electron volts, reconstructing the spins of short-lived Z bosons by tracking their decay products, electrons and muons. The findings, published in Physical Review Letters, demonstrate that entanglement survives extreme high-energy conditions, extending the phenomenon beyond delicate laboratory settings into violent particle collisions. This result provides strong evidence, reaching a statistical significance of 4.7 sigma, that quantum links remain intact even when one particle in the pair is virtual.

CERN Finds Entanglement in Higgs-Born Z Bosons, Challenging Virtual Particle Concepts
science28 days ago

CERN Finds Entanglement in Higgs-Born Z Bosons, Challenging Virtual Particle Concepts

Physicists at CERN’s Large Hadron Collider have detected strong evidence of quantum entanglement between pairs of Z bosons produced by the decay of a Higgs boson. This marks the first time entanglement has been observed in elementary particles acting as qutrits, distinct from the two-state qubits of top quarks. The finding, published in Physical Review Letters, suggests that even 'virtual' particles, which cannot be directly observed, may possess genuine quantum properties like spin entanglement. Although the statistical significance reached 4.7 sigma, just short of the 5-sigma discovery threshold, the data provides compelling evidence for this phenomenon.

CERN Eyes Dark Matter Clues With Next-Gen LHC Upgrades
science1 month ago

CERN Eyes Dark Matter Clues With Next-Gen LHC Upgrades

CERN’s Large Hadron Collider is being upgraded to the High-Luminosity LHC to collect about ten times more data and intensify the search for dark matter, the unseen component that makes up a large portion of the universe. Scientists hope to test theories beyond the Standard Model as the lab ponders even larger next-gen projects like the Future Circular Collider, while India’s researchers continue playing a significant role in CERN’s ecosystem.

From Chronos to Quantum Time: Can We Stop the Clock?
science2 months ago

From Chronos to Quantum Time: Can We Stop the Clock?

An interview with Guido Tonelli ties humanity’s long obsession with time to a journey from myth (Chronos) to modern science, explaining how relativity rewrites time for fast-moving particles and gravity, how time’s arrow emerges for macroscopic systems but can blur or reverse in microscopic realms, and how the Heisenberg principle lets physicists measure particle lifetimes (including the Higgs boson). Tonelli argues time remains fundamental but not necessarily ultimate, with future theories potentially reimagining or even abandoning it as a basic concept, a vision explored in his book Time: The Dream of Killing Chronos.

LHC’s Big Upgrade Aims to Uncover Subtle Clues in the Higgs Frontier
science2 months ago

LHC’s Big Upgrade Aims to Uncover Subtle Clues in the Higgs Frontier

The Large Hadron Collider is entering a multi-year shutdown to become the High-Luminosity LHC, expected to start around 2030 with about seven times more data. This upgrade focuses on replacing detectors with faster, more precise, radiation-hard silicon trackers and adding precision timing to disentangle complex collision events. The goal is to probe Higgs boson properties with unprecedented precision—including rare decays like Higgs to muons or charm quarks and Higgs self-coupling—potentially revealing physics beyond the Standard Model and offering new insights into dark matter and the matter–antimatter imbalance.

India’s CERN Partnership Drives Dark Matter Quest and Higgs Legacy
world-news3 months ago

India’s CERN Partnership Drives Dark Matter Quest and Higgs Legacy

India’s six-decade partnership with CERN puts it at the center of the LHC upgrade and the global hunt for dark matter, with Indian labs contributing to magnet systems, cryogenics, detectors and high-performance computing that underpinned the Higgs boson discovery and will push physics beyond the Standard Model as CERN restarts after a $1.5B upgrade in 2030.

HiLumi Era Begins: LHC Upgrades Set Stage for Tenfold Leap in Physics
science3 months ago

HiLumi Era Begins: LHC Upgrades Set Stage for Tenfold Leap in Physics

After 18 years of discoveries, CERN’s Large Hadron Collider enters Long Shutdown 3 to be upgraded into the High-Luminosity LHC (HiLumi LHC). The upgrade will boost luminosity by about ten times, enabling more detailed data on the Higgs boson and other subatomic phenomena. The renovation includes major overhauls to magnets and infrastructure, with a gradual restart beginning in 2028 and full operation by 2030, marking a new era in particle physics research.

CERN to upgrade the LHC to HiLumi, boosting collisions by about 10x through 2030
science3 months ago

CERN to upgrade the LHC to HiLumi, boosting collisions by about 10x through 2030

The Large Hadron Collider at CERN has entered a four-year Long Shutdown 3 to upgrade into the High-Luminosity LHC, which will raise collision rates by about tenfold and enable roughly 380 million Higgs bosons over its lifetime. The upgrade, which involves replacing thousands of magnets and other components, aims to deliver a much larger data set to probe the Higgs, dark matter, and the early universe. Operations are slated to resume in 2030 and continue into the 2040s, after which a new, higher-energy accelerator may replace it.

Heavy Particle Could Bridge Ordinary Matter to a Hidden Fifth Dimension
science5 months ago

Heavy Particle Could Bridge Ordinary Matter to a Hidden Fifth Dimension

A theoretical team proposes a previously unknown heavy particle that mixes with the Higgs boson to act as a conduit between visible matter and dark matter residing in a warped fifth dimension. This could help explain fermion masses and the dark-to-visible matter ratio, but the particle would be too heavy for current colliders; future machines or gravitational-wave observations might provide indirect evidence.

Lab Realizes False Vacuum Decay in a Quantum Analog, Probing Universe’s Stability
science5 months ago

Lab Realizes False Vacuum Decay in a Quantum Analog, Probing Universe’s Stability

Physicists have created an experimental analog of false vacuum decay—the hypothetical process that could, in theory, trigger a bubble of lower-energy vacuum that expands at light speed and rewrites physics. Using controllable quantum systems (like ultracold atoms or quantum circuits), researchers mimic the field dynamics predicted by quantum field theory to study bubble nucleation and expansion, providing empirical insight into vacuum stability. While the real universe’s decay probability is vanishingly small on human timescales, these analog experiments help test theoretical predictions about the Higgs potential and electroweak vacuum, and guide future work toward higher-fidelity simulations with more qubits to sharpen constraints on cosmic stability.