The first-known observations of matter–antimatter asymmetry in a decaying composite subatomic particle that belongs to the baryon class are reported from the LHCb experiment located at the Large Hadron Collider at CERN. This effect, known as charge–parity (CP) violation, has been theoretically predicted, but hitherto escaped observation in baryons. The experimental verification of this asymmetry violation in baryons, published in Nature this week, is important as baryons make up most of the matter in the observable universe.

Cosmological models suggest that matter and antimatter were created in equal amounts at the Big Bang, but in the present-day universe matter seems to dominate antimatter. This imbalance is thought to be driven by differences in the behavior of matter and antimatter: a violation of symmetry known as CP violation.

This effect has been predicted by the Standard Model of physics and observed experimentally in subatomic particles called mesons more than 60 years ago, but never previously observed in baryons. As opposed to mesons, which are formed by two quarks, baryons are formed by three quarks—particles that make up most of matter such as neutrons and protons are baryons.

Scientists found a way to control magnetism in ultra-thin materials using CrPS₄, opening the door to more compact and energy-efficient technologies. A recent scientific breakthrough has unveiled a promising new technique for manipulating magnetism in ultra-thin materials, potentially paving the w

Physicists have discovered that silicon-22 reveals a new proton magic number offering critical insights into nuclear structure and the forces shaping the universe’s rarest atoms. In nuclear physics, “magic numbers” refer to certain quantities of protons or neutrons that make an atomic nucleus sig

Physicists from the University of Pennsylvania, working with colleagues at Arizona State University, are examining the limitations of a framework that aims to unify the laws of physics throughout the universe. There are two great pillars of thought that don’t quite fit together in physics. The St

What Is a Particle?

What Is a Particle?

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A team of researchers have made progress in understanding how some of the Universe’s heaviest particles behave under extreme conditions similar to those that existed just after the Big Bang.

A study published in Physics Reports provides new insights into the fundamental forces that shaped our Universe and continues to guide its evolution today.

The research, conducted by an international team from the University of Barcelona, the Indian Institute of Technology, and Texas A&M University, focuses on particles containing heavy quarks, the building blocks of some of the most massive particles in existence.

Failing to see any high-energy neutrinos allowed researchers to calculate an upper limit on the fraction of high-energy cosmic rays that are protons.

Scientists at the U. S. Department of Energy Ames National Laboratory and Iowa State University have discovered an unexpected “quantum echo” in a superconducting material. This discovery provides insight into quantum behaviors that could be used for next-generation quantum sensing and computing technologies.

Superconductors are materials that carry electricity without resistance. Within these superconductors are collective vibrations known as “Higgs modes.” A Higgs mode is a quantum phenomenon that occurs when its electron potential fluctuates in a similar way to a Higgs boson. They appear when a material is undergoing a superconducting phase transition.

Observing these vibrations has been a long-time challenge for scientists because they exist for a very short time. They also have complex interactions with quasiparticles, which are electron-like excitations that emerge from the breakdown of superconductivity.

From punch card-operated looms in the 1800s to modern cellphones, if an object has “on” and “off” states, it can be used to store information.

In a laptop computer, the ones and zeroes that make up the binary language are actually transistors either running at low or high voltage. On a compact disc, the one is a spot where a tiny indented “pit” turns to a flat “land” or vice versa, while a zero represents no change.

Historically, the size of the object cycling through those states has put a limit on the size of the storage device. But now, researchers from the University of Chicago Pritzker School of Molecular Engineering have explored a technique to make the metaphorical ones and zeroes out of crystal defects, each the size of an individual atom, for classical computer memory applications.

UChicago researchers created a ‘quantum-inspired’ revolution in microelectronics, storing classical computer memory in crystal gaps where atoms should be.

Korean scientists claim their particle-removing oil-coated filter (PRO) captures significantly more particles and is effective over twice as long as a traditional filter.