Searching for new particles using quantum sensors

In a recent study published in the journal National Science Review, a laboratory search for exotic spin-dependent interactions was conducted with an ensemble-NV-diamond magnetometer. New experimental constraints on two types ...

Studying muonium to reveal new physics beyond the Standard Model

By studying an exotic atom called muonium, researchers are hoping misbehaving muons will spill the beans on the Standard Model of particle physics. To make muonium, they use the most intense continuous beam of low energy ...

Researchers collaborate to better understand the weak nuclear force

The weak nuclear force is currently not entirely understood, despite being one of the four fundamental forces of nature. In a pair of Physical Review Letters articles, a multi-institutional team, including theorists and experimentalists ...

New analysis takes a closer look at the sterile neutrino

A new result from the MicroBooNE experiment at the U.S. Department of Energy's Fermi National Accelerator Laboratory probes the Standard Model—scientists' best theory of how the universe works. The model assumes there are ...

The strange behavior of sound through solids

Not everything needs to be seen to be believed; certain things are more readily heard, like a train approaching its station. In a recent paper, published in Physical Review Letters, researchers have put their ears to the ...

Preparing for a more powerful particle accelerator

The Large Hadron Collider at CERN is back in action after a three-year scheduled technical shutdown period. Experts circulated beam in the powerful particle accelerator at the end of April, and Run 3 physics started in early ...

Probing high-energy neutrinos associated with a blazar

Studying a high-energy neutrino that was observed by the IceCube Neutrino Observatory at the South Pole and that is believed to be intergalactic in origin has yielded some intriguing "new physics" beyond the Standard Model

Higgs10: Inventing the future of Higgs research

In 1975, three CERN theorists, John Ellis, Mary K. Gaillard and Dimitri Nanopoulos, undertook the first comprehensive study of the collider phenomenology of the Higgs boson. Almost 40 years later, it was discovered at the ...

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Standard Model

The Standard Model of particle physics is a theory of three of the four known fundamental interactions and the elementary particles that take part in these interactions. These particles make up all visible matter in the universe. The standard model is a gauge theory of the electroweak and strong interactions with the gauge group SU(3)×SU(2)×U(1).

Every high energy physics experiment carried out since the mid-20th century has eventually yielded findings consistent with the Standard Model. Still, the Standard Model falls short of being a complete theory of fundamental interactions because it does not include gravity, dark matter, or dark energy. It isn't quite a complete description of leptons either, because it does not describe nonzero neutrino masses, although simple natural extensions do.

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