Physics News

CERN Physicists Observe Production of Weak Boson Triplets

A three-vector-boson event recorded by ATLAS, with one W boson decaying to an electron and a neutrino, one W boson decaying to a muon and a neutrino, and a Z boson decaying to two muons; muons are shown by red lines, the electron by a green line, and ‘missing energy’ from the neutrino by a dashed white line. Image credit: ATLAS / CERN.
Feb 27, 2025 by News Staff

Physicists with the ATLAS Collaboration at CERN’s Large Hadron Collider have announced the first observation of VVZ production — a rare combination of three massive vector bosons. A three-vector-boson event recorded by ATLAS, with one W boson decaying to an electron and a neutrino, one W boson decaying to a muon and a neutrino, and a Z boson decaying to two muons; muons are shown by red lines, the electron by a green line, and ‘missing energy’...

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Distribution of the color-Lorentz force acting on an unpolarized up quark in the transverse plane (indicated by the vector field) superimposed on the up quark density distribution in impact-parameter space for an unpolarized proton. Image credit: Crawford et al., doi: 10.1103/PhysRevLett.134.071901.

Physicists Map Out Forces Acting inside Proton

Feb 24, 2025 by News Staff

University of Adelaide’s Dr. Ross Young and colleagues from the QCDSF Collaboration are exploring the structure of subatomic matter to try and provide...

Biswas et al. observed how electrons, excited by ultrafast light pulses, danced in unison around a buckminsterfullerene molecule, then emitted excess energy in the form of several electrons. Image credit: RMT Bergues.

Physicists Observe Synchronized Dance of Electrons on Buckminsterfullerene Molecule

Feb 19, 2025 by News Staff

Physicists from SLAC National Accelerator Laboratory and the University of Hamburg have observed how electrons, excited by ultrafast light pulses, danced...

Visual impression of the ultra-high energy neutrino event observed in KM3NeT/ARCA. Image credit: KM3NeT.

KM3NeT Telescope Detects Most Energetic Cosmic Neutrino Yet

Feb 12, 2025 by News Staff

Dubbed KM3-230213A, the newly-detected neutrino carried an astonishing energy of 220 peta-electronvolts (PeV), making it one of the most powerful elementary...

Installation of the CMS beam pipe. Image credit: CERN / CMS Collaboration.

CERN Physicists Search for Violation of Lorentz Symmetry in Top-Quark Pair Production

Jan 27, 2025 by News Staff

Physicists with the CMS Collaboration at CERN’s Large Hadron Collider have tested whether top quarks adhere to Albert Einstein’s special theory of...

Illustration of the atomic arrangement within a single lanthanide-doped nanocrystal; each lanthanide ion can emit light. Image credit: Andrew Mueller / Columbia Engineering.

Researchers Create New Nanosensors of Force

Jan 1, 2025 by News Staff

The newly-developed all-optical nanosensors are luminescent nanocrystals that can change intensity and/or color when you push or pull on them; they are...

Ilyas et al. demonstrated the efficient manipulation of the magnetic ground state in layered magnets through non-thermal pathways using terahertz light and established regions near critical points with enhanced order parameter fluctuations as promising areas to search for metastable hidden quantum states. Image credit: Adam Glanzman.

Scientists Magnetize Antiferromagnetic Material with Terahertz Laser Light

Dec 26, 2024 by News Staff

Physicists at MIT have directly stimulated atoms in an antiferromagnetic material using a terahertz laser, a light source that oscillates more than a trillion...

Thomas et al. demonstrated quantum state teleportation over a 30.2-km fiber that is populated with high-power 400-Gbps conventional data traffic; by employing various methods to suppress SpRS noise, teleportation fidelity was well maintained alongside elevated classical powers capable of transmitting many Tbps aggregate data rates. Image credit: Thomas et al., doi: 10.1364/OPTICA.540362.

Researchers Demonstrate Quantum Teleportation over Fiberoptic Cables Carrying Internet Traffic

Dec 26, 2024 by News Staff

Northwestern University researchers have successfully achieved quantum state transfer over a 30.2-km fiber carrying 400-Gbps C-band classical traffic....

Planck’s law ignores but does not prohibit black-body radiation (BBR) from being circularly polarized. BBR from nanostructured filaments with twisted geometry from nanocarbon or metal has strong ellipticity from 500 to 3000 nanometers. The submicrometer-scale chirality of these filaments satisfies the dimensionality requirements imposed by fluctuation-dissipation theorem and requires symmetry breaking in absorptivity and emissivity according to Kirchhoff’s law. The resulting BBR shows emission anisotropy and brightness exceeding those of conventional chiral photon emitters by factors of 10 to 100. Image credit: Lu et al., doi: 10.1126/science.adq4068.

Nanostructured Filaments Produce Bright Light Waves that Twirl as They Travel

Dec 24, 2024 by News Staff

Bright, twisted light can be produced thanks to nanostructured filaments with twisted geometry, according to scientists at the University of Michigan. Planck’s...

This artist’s impression shows the evolution of the Universe beginning with the Big Bang on the left followed by the appearance of the Cosmic Microwave Background. The formation of the first stars ends the cosmic dark ages, followed by the formation of galaxies. Image credit: M. Weiss / Harvard-Smithsonian Center for Astrophysics.

Dark Energy is Misidentification of Variations in Kinetic Energy of Universe’s Expansion, Scientists Say

Dec 23, 2024 by News Staff

Dark energy — an unknown energy source that is causing our Universe’s expansion to accelerate – doesn’t actually exist, according to new research. This...

View of the LHCb detector. Image credit: CERN.

Physicists Find Evidence for Matter-Antimatter Asymmetry in Decays of Baryons and Beauty Hadrons

Dec 19, 2024 by News Staff

The Standard Model of particle physics predicts an asymmetry between matter and antimatter known as charge-parity (CP) violation. But the size of this...

Event display of a candidate event for Higgs boson pair production. Image credit: CERN.

CMS Experiment Searches for Higgs Boson Pair Production in Proton-Proton Collisions

Dec 18, 2024 by News Staff

Using data from high-energy proton-proton collisions in Run 2 of CERN’s Large Hadron Collider (LHC), physicists with the CMS Collaboration have released...

Illustration of the production of antihyperhelium-4 in lead-lead collisions. Image credit: J. Ditzel with AI-assistance.

CERN Physicists Find First Ever Evidence of Antihyperhelium-4

Dec 16, 2024 by News Staff

Physicists with the ALICE Collaboration at CERN’s Large Hadron Collider (LHC) have seen the first ever evidence of antihyperhelium-4, which is composed...

Mapping of the altermagnetic order vector in MnTe. Image credit: Amin et al., doi: 10.1038/s41586-024-08234-x.

New Class of Magnetism Imaged for First Time: Altermagnetism

Dec 12, 2024 by News Staff

Altermagnetism is a distinct form of magnetic order where the tiny constituent magnetic building blocks align antiparallel to their neighbors, but the...

A diffractive robot. Image credit: Smart et al., doi: 10.1126/science.adr2177.

Researchers Create Smallest Walking Robot Yet

Dec 4, 2024 by News Staff

A team of researchers at Cornell University has created a new class of magnetically controlled microscopic robots (microbots) that operate at the visible-light...

Data from past proton-electron collisions provide strong evidence of entanglement among the proton’s sea of quarks (spheres) and gluons (squiggles), which may play an important role in their strong-force interactions. Image credit: Valerie Lentz / Brookhaven National Laboratory.

Physicists Map Out Quantum Entanglement in Protons

Dec 3, 2024 by News Staff

Physicists have found a new way to use data from high-energy particle smashups to peer inside protons. Their approach uses quantum information science...

An artist’s impression of primordial black holes. Image credit: NASA.

Astrophysicists to Search for Primordial Black Holes in Planets, Asteroids, and Materials on Earth

Dec 2, 2024 by News Staff

Primordial black holes have been theorized for decades and could even be ever-elusive dark matter. Still, no primordial black hole has ever been observed....

Ben Yuen & Angela Demetriadou define the precise shape of a single photon. Image credit: Ben Yuen & Angela Demetriadou.

Physicists Shed Light on Precise Shape of Single Photon

Nov 19, 2024 by News Staff

New research from the University of Birmingham explores the nature of photons — individual particles of light — in unprecedented detail. Ben...

Display of a lead-lead collision at 5.02 TeV per nucleon pair that resulted in a candidate pair of top quarks that decay into other particles. The event contains four particle jets (yellow cones), one electron (green line) and one muon (red line). The inlay shows an axial view of the event. Image credit: ATLAS / CERN.

CERN Physicists Observe Top-Quark Pairs in Lead-Lead Collisions

Nov 19, 2024 by News Staff

Top-quark pair production has been observed in lead-lead collisions at CERN’s Large Hadron Collider (LHC) with the ATLAS detector, marking the first...

The shadow of a laser beam. Image credit: Abrahao et al., doi: 10.1364/optica.534596.

Under Right Conditions, Laser Beam Can Cast Shadow

Nov 14, 2024 by News Staff

In a new paper published today in the journal Optica, physicists describe how a laser beam can be made to cast a shadow that behaves as any other ordinary...

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