Browse Physics

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.

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

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

A renormalizable effective theory for quantum chromodynamics.

Just how small is the proton?

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

Although the ATLAS Collaboration at the LHC has just begun taking data, they are already able to place new bounds on some models of physics that go beyond the standard model.

New data from the PAMELA satellite on the abundance of antiprotons in cosmic rays still leave the door open for dark matter theories, as well as other explanations.

String dualities are exploited to find a quantum phase transition in two spatial dimensions with non-mean-field exponents.

Preliminary measurements of particle collisions at 7 TeV get a handle on background events at this unprecedented energy.

Theorists gain insight into how the quark-gluon plasma distinguishes left from right.

A new calculation of stellar core-collapse explosions that includes all three neutrino flavors shows unusual spectral patterns that will be important in understanding signals from future galactic supernovae.

Theorists predict a form of Cherenkov radiation produced by quarks in the quark-gluon plasma.

An effective field theory on a lattice is applied successfully to nuclei as large as carbon-12.

Theories of dark matter interacting with a light force carrier, proposed to explain the excess of high-energy positrons in the cosmic rays, turn out to have problems.

Third-order corrections to the interquark potential within quantum chromodynamics are computed for the first time.

A model in which the dark matter relic density was inherited from the lepton asymmetry in the early universe can result in lepton-favoring dark matter annihilations today, which may explain recent anomalous cosmic-ray positron observations.