Browse Physics

Researchers report a possible difference between muon neutrino and muon antineutrino disappearance, which if confirmed will have serious implications for our current theoretical understanding.

Potential signs of new physics in an earlier particle collision experiment are now being questioned in a report from Fermilab.

Researchers have detected spin flips of a single proton, a first step toward precision measurements of the antiproton’s spin magnetic moment.

Connections relating mathematical models of quantum particles in four and two spacetime dimensions could simplify calculations in quantum field theories.

The spatial distribution of dark matter around different types of galaxies can be explained if its particles scatter one another, theorist suggest, but only if the interaction has a finite range.

Will hints of new physics from the study of proton-antiproton collisions stand up against further scrutiny?

State of the art computer simulations provide the first indication of a dibaryon bound state.

The IceCube neutrino detector buried in the Antarctic ice reports that high-energy neutrinos, expected from gamma-ray bursts, have yet to be observed.

Results from the first search for supersymmetry at the LHC have arrived.

The idea of inflation–an exponential expansion of the universe in its first moments–was published in 1981, in a paper that imported new ideas from particle physics into theoretical cosmology.

Theorists uncover hints of a quark-gluon plasma in high-energy proton collisions at the LHC.

An ideal place to look for new physics beyond the standard model is a rare particle decay, and new calculations are providing a highly accurate picture of what to expect.

Attempts to describe the binding of quarks with exact calculations make admirable headway.

A renormalizable effective theory for quantum chromodynamics.

The first experiments to study the quark-gluon plasma at the LHC reveal that even at the hottest temperatures ever produced at a particle accelerator, this extreme state of matter remains the best example of an ideal liquid.

Just how small is the proton?

A set of proposed relations among observable quantities may allow strong tests of whether a rapid expansion of the very early universe produced the seeds of the large-scale structure we see today.

A hypothetical particle might explain both the existence of dark matter and the prevalence of matter over antimatter.

Theorists have predicted that spectacular signals of supersymmetry should be visible at the LHC.

The experimental realization of quantum degenerate cold Fermi gases with large hyperfine spins opens up a new opportunity for exotic many-body physics.