Particle Decay

This new particle is so small it makes an atom look enormous.

Physicists are finalizing plans for MATHUSLA, a powerful new addition to CERN's Large Hadron Collider that will detect long-lived particles and potentially open the door to new physics.

'With this ultra-high energy neutrino, we are opening a new window in our universe.'

Physicist who lent his name to the Higgs boson

For over a decade, the CMS Collaboration, a large team of researchers based at different institutes worldwide, has been analyzing data collected at the Compact Muon Solenoid, a general-purpose particle detector at CERN's Large Hadron Collider (LHC). This large-scale international scientific collaboration has been trying to observe various elusive physical phenomena, including exotic particles and dark matter…

Once a particle of matter, always a particle of matter. Or not. Thanks to a quirk of quantum physics, four known particles made up of two different quarks—such as the electrically neutral D meson composed of a charm quark and an up antiquark—can spontaneously oscillate into their antimatter partners and vice versa.

On April 8, 2024, Peter Higgs passed away. Pioneering the discovery of the Higgs boson, the mark the theoretical physicist has left on physics is immense.

Dark matter is a ghostly substance that astronomers have failed to detect for decades, yet which we know has an enormous influence on normal matter in the universe, such as stars and galaxies. Through the massive gravitational pull it exerts on galaxies, it spins them up, gives them an extra push along their orbits, or even rips them apart.

The Large Hadron Collider hasn't seen any new particles since the discovery of the Higgs boson in 2012. Here's what researchers are trying to do about it.

Physicists with the CMS Collaboration at CERN's Large Hadron Collider (LHC) have presented their first search for new physics using data from LHC Run 3.

To understand the universe better, scientists from all over the world are going to harness the power of an enormous machine -- the Large Hadron Collider.

An international team of scientists has provided new results in an experiment that could have a profound impact on humanity's understanding of the universe by potentially revealing the existence of a fifth force of nature, a new subatomic particle, or a flaw in the Standard Model of particle physics.

One of the most high-profile mysteries in physics today is what scientists refer to as the "Strong CP Problem." Stemming from the puzzling phenomenon that neutrons do not interact with electric fields despite being made up of quarks—smaller, fundamental particles that carry electric charges—the Strong CP Problem puts into question the Standard Model of physics, or the set of theories scientists have been using to…

The Higgs boson is an elementary particle produced by the quantum excitation of the Higgs field. According to the Standard Model, the so-called God particle (discovered 11...

The discovery of the Higgs boson at CERN's Large Hadron Collider (LHC) in 2012 marked a significant milestone in particle physics. Since then, the ATLAS and CMS collaborations have been diligently investigating the properties of this unique particle and searching to establish the different ways in which it is produced and decays into other particles.

Einstein's relativity overthrew the notion of absolute space and time, replacing them with a spacetime fabric. But is spacetime truly real?

New research attempts to discern how bizarre particles of strange matter form in the nuclei of atoms

Surely that would make "nothing" a "something" . . . right?

Today, at the Moriond conference, the ATLAS and CMS collaborations have both presented the observation of a very rare process: the simultaneous production of four top quarks. They were observed using data from collisions during Run 2 of the Large Hadron Collider (LHC).

The Higgs boson is the only fundamental particle known to be scalar, meaning it has no quantum spin. This fact answers questions about our universe, but it also raises new ones.