Tag Archive for 'Particle'

In 2012, physicists from the ATLAS and CMS experiments at CERN announced the discovery of a new boson looking very much like the Higgs boson. Image credit: Daniel Dominguez / CERN.

CERN Physicists Release Most Up-To-Date Results on Higgs Boson’s Properties

Jul 4, 2022 by News Staff

On July 4, 2012, physicists from the ATLAS and CMS collaborations at CERN’s Large Hadron Collider announced the observation of a Higgs boson at a mass...

The classical signature of a top-quark pair produced in LHC collisions is four jets (yellow cones), one muon (red line, also detected by the CMS muon detectors as red boxes), and missing energy from a neutrino (pink arrow). Image credit: CERN.

CERN Physicists Measure Mass of Top Quark

Apr 20, 2022 by News Staff

Physicists from the CMS (Compact Muon Solenoid) Collaboration at CERN’s Large Hadron Collider (LHC) have substantially improved the precision with which...

Physicists Precisely Measure Mass of W Boson

Apr 11, 2022 by News Staff

Physicists from the Collider Detector at Fermilab (CDF) Collaboration have determined the mass of the W boson, a mediator of the weak force between elementary...

An artist’s impression of Tcc+, a tetraquark composed of two charm quarks and an up and a down antiquark. Image credit: CERN.

CERN Discover New Tetraquark Particle

Aug 2, 2021 by News Staff

The new exotic particle discovered by physicists from the LHCb Collaboration at CERN’s Large Hadron Collider (LHC) contains two quarks and two antiquarks....

Two photons collide in this artist’s rendering of the pion experiment; the result is a charge-neutral pion shown as a green sphere; just 83 attoseconds later, the pion disintegrates and emits two photons, shown as purple spheres. Image credit: Jefferson Lab.

Physicists Precisely Measure Lifetime of Neutral Pion

May 27, 2021 by News Staff

Neutral pions (π0) have a lifetime of around 80 attoseconds, decaying into two photons. In new research, an international team of physicists has measured...

Experimental configuration and principles of optical vortex beam for discharge control and guidance: at first, microparticles are prepared and placed in an enclosed container with vertically aligned electrodes (left); an applied electric field through the container lifts the particles by electrostatic forces; some of the lifted particles cross the hollow core doughnut-shaped CW laser beam and get trapped in it; the vortex laser beam is guides particles in the mid-air: particles from a container are transported into a parallel plate chamber through a hole in one of the electrodes; in addition, particles are heated by the same laser beam thus creating a thermal channel between the electrodes that results in a subthreshold electrical breakdown; the inset shows a photograph of the experimental setup with particles trapped in the beam. Image credit: Shvedov et al., doi: 10.1038/s41467-020-19183-0.

‘Tractor’ Laser Beam Has Potential to Control Path, Direction of Lightning

Nov 17, 2020 by News Staff

An international team of researchers has proposed and demonstrated an efficient approach for triggering, trapping and guiding electrical discharges in...

CMS candidate event for a top quark and antitop quark producing an electron, a muon and jets originating from bottom (b) quarks. Image credit: CERN.

CERN Physicists Find First Evidence for Production of Top Quarks in Nucleus-Nucleus Collisions

Nov 16, 2020 by News Staff

New results from the CMS Collaboration at CERN’s Large Hadron Collider demonstrate for the first time that top quarks are produced in nucleus-nucleus...

NASA’s OSIRIS-REx spacecraft is on a mission to explore the asteroid Bennu and return a sample to Earth. Image credit: NASA’s Goddard Space Flight Center Conceptual Image Lab.

OSIRIS-REx Team Explores Activity of Asteroid Bennu

Sep 10, 2020 by News Staff

NASA’s OSIRIS-REx spacecraft, launched in 2016, is currently orbiting the near-Earth asteroid (101955) Bennu with the aim of briefly touching on the...

X(6900), a tetraquark particle composed of two charm quarks and two charm antiquarks. Image credit: CERN.

CERN Physicists Discover Four-Charm-Quark Particle

Jul 3, 2020 by News Staff

Physicists from CERN’s LHCb Collaboration have discovered a new tetraquark particle, named X(6900), composed of two charm quarks and two charm antiquarks. X(6900),...

A simulation of the large-scale structure of the Universe with filaments of dark matter in blue and places of galaxy formation in yellow. Image credit: Zarija Lukic / Lawrence Berkeley National Laboratory.

New Candidate Particle for Dark Matter: D-Star Hexaquark

Mar 4, 2020 by Enrico de Lazaro

Dark matter is the mysterious substance that makes up roughly a quarter of the Universe. There is strong indirect evidence for its existence from measurements...

Abel et al present the result of an experiment to measure the electric dipole moment of the neutron at the Paul Scherrer Institute using Ramsey’s method of separated oscillating magnetic fields with ultracold neutrons. Image credit: Gerd Altmann.

Physicists Precisely Measure Electric Dipole Moment of Neutron

Mar 2, 2020 by News Staff

In a paper in the journal Physical Review Letters, an international team of physicists reports the most precise measurement ever made of the electric dipole...

Anomalies in nuclear physics experiments may show signs of a new force. Image credit: Jw210913.

X17 Particle Might Solve Mystery of Dark Matter

Dec 10, 2019 by The Conversation

Professor Attila Krasznahorkay and his colleagues at ATOMKI (the Institute of Nuclear Research in Debrecen, Hungary) recently published a paper that hints...

Lawson et al propose a new instrument for searching dark matter axions using tunable plasmas. Image credit: Alexander Millar / Stockholm University.

Physicists Propose New Way to Detect Dark Matter Particles

Oct 10, 2019 by News Staff

In a paper published in the journal Physical Review Letters, an international team of physicists proposes a new strategy for searching for hypothetical...

One of the first collisions of lead ions recorded by the ALICE detector. Image credit: ALICE Collaboration / CERN.

CERN Physicists Measure Elliptic Flow of Bottomonium Particles

Jul 22, 2019 by News Staff

Physicists in the ALICE (A Large Ion Collider Experiment) Collaboration at CERN have announced the first measurements of an elliptic-shaped flow of upsilons,...

Full-frame single image of Bell entanglement. Scale bar - 1 mm. Image credit: Moreau et al, doi: 10.1126/sciadv.aaw2563.

Physicists Unveil First-Ever Photo of Quantum Entanglement

Jul 15, 2019 by News Staff

A team of physicists from the School of Physics and Astronomy at the University of Glasgow has captured an image of Bell entanglement, a strong form of...

Macleod et al analyzed the properties of vacuum Cherenkov radiation in strong laser pulses and the magnetic field around a pulsar. Image credit: Gerd Altmann.

High-Velocity Charged Particles Emit Cherenkov Radiation in Quantum Vacuum

May 6, 2019 by News Staff

According to new research published in the journal Physical Review Letters, charged particles traveling through empty space can emit Cherenkov radiation...

Satya Sainadh et al put an upper limit of 1.8 attoseconds on any tunneling delay, in agreement with theoretical findings and ruling out the interpretation of all commonly used ‘tunneling times’ as time spent by an electron under the potential barrier. Image credit: Griffith University.

Quantum Tunneling is Near Instantaneous, Experiments Show

Mar 21, 2019 by News Staff

Tunneling, a key feature of quantum mechanics, is when a particle that encounters a seemingly insurmountable barrier passes through it, ending up on the...

One of the first heavy-ion collisions with stable beams recorded by LHCb. Image credit: CERN.

New Charmonium Particle Discovered

Mar 11, 2019 by News Staff

Physicists from the Large Hadron Collider beauty (LHCb) Collaboration at CERN have discovered a previously unknown particle that consists of a charm quark...

Electrons Are Perfectly Spherical, New Measurements Confirm

Oct 18, 2018 by News Staff

Physicists from the Advanced Cold Molecule Electron Electric Dipole Moment (ACME) Collaboration have examined the shape of an electron’s charge with...

CERN Physicists Discover Two New Particles

Oct 1, 2018 by News Staff

Physicists from CERN’s Large Hadron Collider beauty (LHCb) experiment have found two never-before-seen particles, as well as hints of another new particle,...

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