Physics News

Physicists Produce Matter and Antimatter from Photon Collisions

Two gold ions (red) move in opposite direction at 99.995% of the speed of light (v, for velocity, = approximately c, the speed of light). As the ions pass one another without colliding, two photons (γ) from the electromagnetic cloud surrounding the ions can interact with each other to create a matter-antimatter pair: an electron (e-) and positron (e+). Image credit: Brookhaven National Laboratory.
Aug 11, 2021 by News Staff

Physicists with the STAR Collaboration at Brookhaven National Laboratory’s Relativistic Heavy Ion Collider (RHIC) have produced definitive evidence for two phenomena predicted more than eight decades ago: production of matter and antimatter from photon collisions and polarization-dependent light-bending (birefringence) in a vacuum. Two gold ions (red) move in opposite direction at 99.995% of the speed of light (v, for velocity, = approximately c,...

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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....

Display of a candidate WWW→ 3 leptons + neutrinos event; the event is identified by its decay to a muon (red line), two electrons (blue lines) and missing transverse energy (white dashed line). Image credit: CERN.

CERN Physicists Observe Triple W-Boson Production

Jul 27, 2021 by News Staff

Physicists from the ATLAS Collaboration at CERN’s Large Hadron Collider (LHC) have observed a process called WWW production: the simultaneous creation...

Chen et al. report the observation of room-temperature ferromagnetism in 2D graphitic Zn1-xCoxO (gZCO) monolayer with strong environmental stability; red, blue, and yellow spheres represent cobalt, oxygen, and zinc atoms. respectively. Image credit: Lawrence Berkeley National Laboratory.

World’s Thinnest Magnet Created

Jul 20, 2021 by News Staff

The one-atom thin 2D magnet, created by Dr. Jie Yao from the University of California, Berkeley, and the Lawrence Berkeley National Laboratory, and his...

The structure of the superlattice material Bi4O4SeCl2. Image credit: University of Liverpool.

Newly-Developed Material Has Extremely Low Thermal Conductivity

Jul 16, 2021 by News Staff

The new superlattice material, Bi4O4SeCl2, developed by a team of scientists from the United Kingdom and France, combines two different arrangements of...

NASA’s Parker Solar Probe approaching the Sun. Image credit: NASA’s Scientific Visualization Studio.

Parker Solar Probe Reveals New Insights on Electric Field of the Sun

Jul 14, 2021 by News Staff

Using data from NASA’s Parker Solar Probe, a team of solar physicists calculated the distribution of electrons within the electric field of the Sun;...

Siraj & Loeb explore the possibility that accretion flares resulting from the tidal disruption of small Oort Cloud bodies by a putative primordial black hole could power an observable optical signal that could be searched for with the upcoming Vera C. Rubin Observatory Legacy Survey of Space and Time. Image credit: Sci-News.com / Zdeněk Bardon / ESO.

Theoretical Physicist Solves How Universe is Reflected near Black Hole

Jul 12, 2021 by News Staff

Black holes are famously compact objects where the paths of light are drastically bent by the curvature of space-time. While light itself cannot escape...

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

CERN Physicists Observe New Excited Beauty-Strange Baryon

Jul 7, 2021 by News Staff

Using proton-proton collision data collected by the Compact Muon Solenoid (CMS) experiment at CERN’s Large Hadron Collider (LHC), physicists from the...

CERN Physicists Test ‘Lepton Flavor Universality’

Jul 6, 2021 by News Staff

Physicists from the ATLAS Collaboration at CERN’s Large Hadron Collider (LHC) have successfully performed measurements of ‘lepton flavor universality,’...

Photons emitted near rotating black holes encode quantum information that can be measured by actual quantum information technology. Image credit: Sci-News.com.

Stephen Hawking’s Black-Hole Area Law Observationally Confirmed

Jul 1, 2021 by News Staff

Hawking’s black-hole area theorem, also known as the second law of black hole mechanics, states that the total horizon area of a classical black hole...

An artist’s impression of an intermediate-mass black hole. Image credit: Sci-News.com.

Theoretical Physicists Show How Law of Charge Conservation Could Break Down near Black Hole

Jun 25, 2021 by News Staff

Singularities play an interesting role in physics, and come in many different varieties, from the mathematically and philosophically challenging to the...

The LHCb Collaboration measured the tiny mass difference between the D1 and D2 mesons, which are a manifestation of the quantum superposition of the D0 particle and its antiparticle. This mass difference controls the speed of the D0 oscillation into its antiparticle and back. Image credit: CERN.

CERN Physicists Observe Nonzero Mass Difference between Charm Meson and Its Antiparticle

Jun 9, 2021 by News Staff

Physicists from the LHCb Collaboration at CERN have proved that a subatomic particle called the charm meson can switch into its antiparticle and back again....

Visualization of the structure of 4H-Si viewed perpendicular to the hexagonal axis. A transmission electron micrograph showing the stacking sequence is displayed in the background. Image credit: Thomas Shiell / Timothy Strobel.

Scientists Synthesize New Crystalline Form of Silicon

Jun 8, 2021 by News Staff

A team of researchers from the Carnegie Institution for Science, RMIT University and the Australian National University has synthesized a new form of silicon...

This image shows an electron ptychographic reconstruction of a praseodymium orthoscandate crystal, zoomed in 100 million times. Image credit: Chen et al., doi: 10.1126/science.abg2533.

Physicists Capture Ultraprecise Images of Atoms

Jun 8, 2021 by News Staff

Two major problems that limit the resolution and interpretation of electron microscopy images are lens aberrations and multiple scattering. Cornell University’s...

The acousto-electric chip includes a radio-frequency amplifier, circulator and filter; SEM image shows details of the amplifier. Image credit: Bret Latter / Matt Eichenfield.

Researchers Create World’s Smallest Acoustic Amplifier

Jun 7, 2021 by News Staff

An acoustic amplifier developed by Sandia National Laboratories researchers measures 0.5 mm2 (0.0008 square inches), and is more than 10 times more effective...

Speckle-MAIN imaging of Cos-7 cells: (a) diffraction-limited image; scale bar - 20 μm; (b) reconstructed speckle-MAIN image; (c, d) zoom-in view of the white box area in (a); (e, f) zoom-in view of the white box area in (b); scale bar: 2 μm. Image credit: Lee et al., doi: 10.1038/s41467-021-21835-8.

Hyperbolic Metamaterial Turns Conventional Light Microscope into Super-Resolution Imager

Jun 1, 2021 by News Staff

The speckle-MAIN technology developed by University of California, San Diego researchers involves a specially engineered material that shortens the wavelength...

Visualization of an expanding drop of quark-gluon plasma. Image credit: Javier Orjuela Koop, University of Colorado, Boulder.

Particles in Quark-Gluon Plasma Move in the Same Way as in Water, Physicists Discover

May 27, 2021 by News Staff

Quark-gluon plasma is a state of dense matter with the quarks and gluons being its constituents. Soon after the Big Bang the matter was just in such a...

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...

Enhanced α-particle preformation in 214U and 216U. Image credit: Zhang et al., doi: 10.1103/PhysRevLett.126.152502.

Physicists Discover New Uranium Isotope: Uranium-214

May 14, 2021 by Enrico de Lazaro

Physicists at the Heavy Ion Research Facility in China have observed the lightest uranium isotope to date, uranium-214 (214U), and precisely measured the...

Zhang et al. demonstrate the long-sought transition between atomic and molecular condensates, the bosonic analogue of the crossover from a Bose-Einstein condensate to a Bardeen-Cooper-Schrieffer superfluid in a Fermi gas. Image credit: Zhang et al., doi: 10.1038/s41586-021-03443-0.

Physicists Turn Atomic Bose-Einstein Condensate into Molecular One

Apr 29, 2021 by News Staff

Molecular quantum gases (that is, ultracold and dense molecular gases) have many potential applications, including quantum control of chemical reactions,...

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