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High Energy Physics
CERN's NA64 experiment used a high-energy muon beam technique to advance the elusive search for dark matter, offering new hope for solving one of astronomy's greatest mysteries.
Almost 100 years ago, an asymmetric pathology led Dirac to postulate the positron. A similar pathology could lead us to supersymmetry.
From forming bound states to normal scattering, many possibilities abound for matter-antimatter interactions. So why do they annihilate?
It's 2024, and we still only know of the fundamental particles of the Standard Model: nothing more. But these 8 unanswered questions remain.
Predicted way back in the 1960s, the discovery of the Higgs boson in 2012 completed the Standard Model. Here's why it remains fascinating.
Scientists are searching for dark matter particles that are trillions or even quadrillion times lighter than the more traditional searches.
CERN's Large Hadron Collider is the most powerful particle accelerator ever. To go even further, we'll have to overcome something big.
With new W-boson, top quark, and Higgs boson measurements, the LHC contradicts earlier Fermilab results. The Standard Model still holds.
IceCube scientists have detected high-energy tau neutrinos from deep space, suggesting that neutrino transformations occur not only in lab experiments but also over cosmic distances.
Glueballs are an unusual, unconfirmed Standard Model prediction, suggesting bound states of gluons alone exist. We just found our first one.
Practically all of the matter we see and interact with is made of atoms, which are mostly empty space. Then why is reality so... solid?
If the electromagnetic and weak forces unify to make the electroweak force, maybe, at higher energies, something even grander happens?
The "first cause" problem may forever remain unsolved, as it doesn’t fit with the way we do science.
Lord Kelvin is thought to have said there was nothing new to discover in physics. His real view was the opposite.
In the infant Universe, particle physics reigned supreme.
A great many cosmic puzzles still remain unsolved. By embracing a broad and varied approach, particle physics heads toward a bright future.
Discrepancies between observations and theory regarding subatomic particles called muons may force scientists to rethink the quantum world.
The $21.5-billion project could involve tunneling hundreds of feet under Lake Geneva.
Recent measurements of CERN data seem to disagree with standard-model predictions about how the Higgs boson decays, though further analysis is needed to confirm the observations.
The DUNE project will beam tiny neutrinos across vast distances. But the first step involved moving a heavier material: 1 million tons of rock.
Today, supermassive black holes and their host galaxies tell a specific story in terms of mass. But JWST reveals a different story early on.
A new measurement offers insights on the density of the mysterious force driving the Universe's expansion.
Physicists have yet to pinpoint the hypothetical matter that keeps galaxies from flying apart. Now they have a new focus.
In our Universe, matter is made of particles, while antimatter is made of antiparticles. But sometimes, the physical lines get real blurry.
U.S. particle physicists recently recommended a list of major research projects that they hope will receive federal funding.
In the early stages of the hot Big Bang, matter and antimatter were (almost) balanced. After a brief while, matter won out. Here's how.
In the very early Universe, practically all particles were massless. Then the Higgs symmetry broke, and suddenly everything was different.
In the earliest stages of the hot Big Bang, equal amounts of matter and antimatter should have existed. Why aren't they equal today?
When the hot Big Bang first occurred, the Universe reached a maximum temperature never recreated since. What was it like back then?
Scientists will be able to make detailed "Claymation-like" movies of chemical reactions.