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The LHCb collaboration has observed an exotic particle made up of four charm quarks for the first time. The Large Hadron Collider Beauty (LHCb) collaboration has observed a type of four-quark particle never seen before. The discovery, presented at a recent seminar at CERN and described in a newly pa...

The ATLAS and CMS collaborations at the Large Hadron Collider have seen evidence of a new type of decay not yet observed: the Higgs boson decaying into a pair of muons. US CMS — the United States contingent of the global CMS collaboration — played a crucial role in this result, contributing to the e...

Discovery of a new exotic hadron containing two charm quarks and an up and a down antiquark. Recently, the Large Hadron Collider beauty (LHCb) experiment at CERN presented a new discovery at the European Physical Society Conference on High Energy Physics (EPS-HEP). The new particle discovered by LHC...

In a first for particle physics, the CMS collaboration has observed three J/ψ particles emerging from a single collision between two protons. It’s a triple treat. By sifting through data from particle collisions at the Large Hadron Collider (LHC), the CMS collaboration has seen not one, not two but ...

Researchers at MIT found X particles in the quark-gluon plasma at CERN using machine learning. About 100 particles were identified, helping to clarify their structure and the conditions of the early universe. In the first millionths of a second after the Big Bang, the universe was a roiling, trillio...

Physicists at the ATLAS experiment are on the hunt for new, long-lived particles to help explain several outstanding mysteries of our Universe. Physicists at the ATLAS experiment are on the hunt for new, long-lived particles to help explain several outstanding mysteries of our Universe. High-energy ...

The Large Hadron Collider beauty (LHCb) collaboration has presented new findings that may help determine whether antimatter detected in space originates from dark matter. Recently at the Quark Matter conference and before that at the Rencontres de Moriond conference, the Large Hadron Collider beauty...

Beams of protons are again circulating around the collider’s 27-kilometer ring, marking the end of a multiple-year hiatus for upgrade work. In 2022, CERN is restarting the LHC after more than three years of maintenance and upgrades, known as Long Shutdown 2 (LS2). Once restarted, the energy will cli...

Recent results from CERN’s LHC suggest physics beyond the Standard Model, including anomalies in quark decay, muon behavior, and the W boson’s mass. These findings may point to new particles or forces. As a physicist working at the Large Hadron Collider (LHC) at CERN, one of the questions I am most ...

The Large Hadron Collider has detected three new particles, including a new pentaquark and the first pair of tetraquarks. Three never-before-seen particles have been observed by the international Large Hadron Collider beauty (LHCb) collaboration at the Large Hadron Collider (LHC). The discovery incl...

The Large Hadron Collider is once again delivering proton collisions to experiments, this time at an unprecedented energy of 13.6 TeV, marking the start of the accelerator’s third run of data taking for physics. A burst of applause erupted in the CERN Control Center on July 5, 2022, at 4.47 p.m. CES...

Discovery promises to help physicists understand nature of universe’s most abundant particle. In a scientific first, a team led by physicists at the University of California, Irvine (UCI) has detected neutrinos created by a particle collider. The discovery promises to deepen scientists’ understandin...

The first observation of collider neutrinos at the LHC paves the way for exploring new physics scenarios. Although neutrinos are produced abundantly in collisions at the Large Hadron Collider (LHC), until now no neutrinos produced in such a way had been detected. Within just nine months of the start...

The first phase involves a major geographical, geological, and environmental data-gathering effort. CERN is exploring the Future Circular Collider (FCC) as a potential successor to the LHC, with a feasibility study underway. The FCC would be located in a 91-km tunnel between France and Switzerland. ...

The ATLAS and CMS collaborations have joined forces to establish the first evidence of the rare decay of the Higgs boson into a Z boson and a photon. The ATLAS and CMS collaborations at CERN’s Large Hadron Collider (LHC) have uncovered the first evidence of the Higgs boson decaying into a Z bo...

The future of experimental particle physics is exciting – and energy intensive. SLAC physicists are thinking about how to make one proposal, the Cool Copper Collider, more sustainable. Ever since the discovery of the Higgs boson in 2012, physicists have wanted to build new particle colliders to bett...

This search for exotic long-lived particles looks at the possibility of “dark photon” production, which would occur when a Higgs boson decays into muons displaced in the detector. The CMS experiment has presented its first search for new physics using data from Run 3 of the Large Hadron Collider. Th...

Two decades after the first proof of photon entanglement, the ATLAS and CMS experiments have observed quantum entanglement between top quarks and their antiparticles at the Large Hadron Collider. This breakthrough confirms entanglement at high energies and offers a new perspective on quantum mechani...

With this measurement, the Large Hadron Collider again demonstrated its ability to provide very high-precision measurements and bring new insights into an old mystery. The CMS collaboration revealed a groundbreaking measurement of the electroweak mixing angle, confirming Standard Model predictions a...

Artificial intelligence is revolutionizing how new particles are detected in LHC experiments. By training AI to recognize and differentiate between typical and atypical jets, researchers can identify potential new physics hidden within particle collisions. Recent advancements were highlighted at a p...

Physicists uncovered a fascinating link between the Large Hadron Collider and quantum computing. They found that top quarks produced at the LHC exhibit a property called “magic,” essential for quantum computation. This discovery could revolutionize our understanding of quantum mechanics ...

In a new result released today, the ATLAS Collaboration announced strong evidence of the production of four top quarks. This rare Standard Model process is expected to occur only once for every 70 thousand pairs of top quarks created at the LHC and has proven extremely difficult to measure...

It’s official: when astronauts land on the Moon in 2024 they will get there with help from the European Service Module. The European Space Agency signed a contract with Airbus to build the third European Service Module for NASA’s Orion spacecraft that will ferry the next astronauts to land on the Mo...

The ALICE collaboration has presented new results on the production rates of antideuterons based on data collected at the highest collision energy delivered so far at the Large Hadron Collider. The antideuteron is composed of an antiproton and an antineutron. The new measurements are important becau...

Probing Dark Matter With the Higgs Boson Visible matter – everything from pollen to stars and galaxies – accounts for roughly 15% of the total mass of the Universe. The remaining 85% is made of something entirely different from things we can touch and see: dark matter. Despite overwhelming evidence ...