tldrdaily.news logo
Tag

Lhc

All articles tagged with #lhc

science1 day ago

CERN chills the LHC to chase new physics

The Large Hadron Collider is being upgraded to reach extreme cryogenic temperatures to improve measurements and reduce electronic noise. A new CO2-based heat exchanger, developed with Swep, cools Atlas components to -45C, while other accelerator sections reach 1.9 Kelvin for superconducting magnets. This relies on dilution refrigeration using helium-4 and helium-3, a key tech for quantum computing, with broader applications in cryogenic cooling for semiconductors and even supermarket refrigeration. By achieving colder conditions, scientists aim to probe physics beyond the Standard Model.

via BBC|
#cern#dilution-refrigeration#lhc
science5 months ago

Affordable and Rapid Route to a Higgs Factory in Particle Physics

The article discusses the current state and future prospects of particle colliders for studying the Higgs boson, highlighting the potential of a cost-effective and faster option called LEP3, which would repurpose existing infrastructure to produce large numbers of Higgs particles for detailed study, as an alternative to more expensive and longer-term projects like the Future Circular Collider.

via Big Think|
#higgs-boson#higgs-factory#lep3
science6 months ago

LHC Detects Rare Top-Quark Pair Romance

Researchers at CERN's LHC, through CMS and ATLAS experiments, have observed a fleeting bound state of top quark and antiquark pairs, called toponium, challenging previous assumptions about the top quark's behavior and opening new avenues for understanding the strong nuclear force and potential new particles.

via Home | CERN|
#atlas#cms#lhc
science1 year ago

ALICE Discovers Antimatter Counterpart of Hyperhelium-4

The ALICE collaboration at the Large Hadron Collider has found the first evidence of antihyperhelium-4, the heaviest antimatter hypernucleus observed at the LHC, with a significance of 3.5 standard deviations. This discovery, based on 2018 lead-lead collision data, supports the statistical hadronisation model's predictions and contributes to understanding the matter-antimatter asymmetry in the universe. The findings also include evidence of antihyperhydrogen-4 and confirm equal production of matter and antimatter at LHC energies.

via CERN|
#alice#antimatter#hypernuclei
science-and-technology1 year ago

"CMS Publicly Releases Higgs Boson Discovery Data"

The CMS collaboration has released the combination of measurements that led to the discovery of the Higgs boson in 2012, along with the statistical analysis tool called Combine software, which was developed during the first run of the Large Hadron Collider (LHC). This release includes a likelihood function with nearly 700 parameters, allowing researchers outside the collaboration to incorporate the CMS Higgs boson discovery measurements into their studies. This move aligns with CMS's commitment to fully open science, which also includes open-access publications, the release of CMS data on the CERN open-data portal, and the publication of its software framework on GitHub.

via CERN|
#cms#higgs-boson#lhc
physics1 year ago

"ATLAS: First Measurement of W-Boson Width at LHC"

The ATLAS collaboration at the Large Hadron Collider (LHC) has made the first measurement of the W-boson width, a parameter that may hold clues about new physics phenomena beyond the Standard Model. The measurement, based on proton-proton collision data at an energy of 7 TeV, yielded a value of 2202 ± 47 million electronvolts (MeV), consistent with the Standard-Model prediction. This achievement required a detailed particle-momentum analysis and the confluence of high-precision results, including an accurate understanding of W-boson production, knowledge of the inner structure of the proton, and theoretical predictions. The measured values of the W-boson mass and width are consistent with the Standard-Model predictions, and future measurements using larger datasets are expected to further refine our understanding of particle physics.

via Phys.org|
#atlas#lhc#particle-physics
particle-physics1 year ago

"ATLAS: Groundbreaking Measurement of W-Boson Width at LHC"

The ATLAS collaboration at the Large Hadron Collider (LHC) has provided the first measurement of the W-boson width, a parameter that may hold clues about new physics phenomena. The measurement, based on proton-proton collision data, yielded a value of 2202 ± 47 MeV, consistent with the Standard-Model prediction. Achieving this precision required detailed particle-momentum analysis, accurate understanding of W-boson production, and knowledge of the inner structure of the proton. The measured values of the W-boson mass and width are consistent with the Standard-Model predictions, and future measurements using larger datasets are expected to further reduce uncertainties and enable more stringent tests of the Standard Model.

via CERN|
#atlas#lhc#particle-physics
science-and-technology1 year ago

"Proposed: CERN's $17 Billion Plan for a 3x Larger Particle Smasher"

CERN is planning to build the Future Circular Collider (FCC), a new particle collider three times longer than the Large Hadron Collider (LHC) with the capability to smash particles together with significantly more energy. The ambitious project aims to push energy thresholds beyond current capabilities and promises a physics program that will take high energy research into the next century. The FCC tunnel will house two colliders, the electron-positron collider (FCC-ee) and the proton-proton collider (FCC-hh), with the goal of pushing particle collision to energies of 100 TeV and uncovering new realms of physics.

via Universe Today|
#cern#future-circular-collider#high-energy-research
science-and-technology1 year ago

"Proposed €20bn Next-Generation Particle-Smasher to Uncover Universe's Secrets"

CERN is proposing to build the Future Circular Collider (FCC), a particle accelerator three times the size of the Large Hadron Collider (LHC) to explore energies beyond the LHC's capabilities and hunt for evidence of dark matter and dark energy. The proposed 90-kilometer-long collider aims to start smashing electrons in the 2040s and protons in the 2070s, with a price tag of $17.2 billion. Critics argue that the project is a gamble and that the funds could be better spent elsewhere, but the decision ultimately rests on the countries that fund CERN.

via IFLScience|
#cern#dark-matter#future-circular-collider
science-and-technology2 years ago

"Revving Up the LHC: Lead-Ion Collisions Begin"

The Large Hadron Collider (LHC) at CERN has begun its first heavy-ion run in five years, with stable beams of lead nuclei colliding at an increased energy of 5.36 TeV per nucleon pair. The primary goal of this run is to study quark-gluon plasma, a state of matter believed to have existed shortly after the Big Bang. The ongoing run is expected to bring significant advances in our understanding of quark-gluon plasma, with upgrades in the experiments' detection and analysis systems. The experiments will also study ultra-peripheral collisions of heavy ions to probe gluonic matter and study rare phenomena.

via CERN|
#cern#heavy-ion-physics#lead-ion-collision
physics2 years ago

"Unveiling the Future: Collider Neutrino Physics Takes Center Stage in Physics"

The Forward Search Experiment (FASER) at the Large Hadron Collider (LHC) has successfully detected neutrinos produced in colliding beams, opening up a new field of study in collider neutrino physics. Neutrinos, which rarely interact with matter, were observed by studying the particles produced when they interacted with matter. FASER, positioned in the forward region of the LHC's ATLAS experiment, identified muon neutrinos and antineutrinos by analyzing events consistent with the production of muons. This groundbreaking observation paves the way for future neutrino physics measurements at collider experiments, providing opportunities to test the limits of the standard model and search for new physics.

via Physics|
#faser#lhc#neutrinos
physics2 years ago

Rare Higgs Boson Decay Observed in LHC Experiments

The ATLAS and CMS collaborations have found the first evidence of the rare decay of the Higgs boson into a Z boson and a photon, which could provide indirect evidence of the existence of particles beyond those predicted by the Standard Model of particle physics. The result has a statistical significance of 3.4 standard deviations, and the measured signal rate is 1.9 standard deviations above the Standard Model prediction. The discovery could provide valuable insights into both physics beyond the Standard Model and the nature of the Higgs boson.

via Interactions.org|
#atlas#cms#higgs-boson