Browse Physics

Strange-beauty mesons are only the third type of particle observed to violate CP symmetry.

According to a new model, galaxies may contain disks made of a specific type of dark matter that can interact more strongly than most dark matter.

The IceCube neutrino telescope reports its most extensive search for neutrinos produced by dark matter annihilations in the Sun.

The particle thought to be the Higgs boson seems likely to pass an important identity check.

Microparticles suspended in an optical cavity may be a new way to detect gravity waves.

The H.E.S.S. Collaboration has put bounds on the flux of very-high-energy gamma rays that could be produced by annihilations of dark matter particles.

Cosmic gamma-ray bursts turn out to be polarized, which rules out the breaking of a fundamental symmetry down to the lowest limits ever observed.

Three major drawbacks to the ΛCDM dark matter model of the universe may be ameliorated if a proposed particle couples to dark matter and to neutrinos.

Measurements of a possible electron electric dipole moment in ferroelectric materials are becoming increasingly sensitive.

A proposed experiment could, over several years of operation, test the suspicion that the three known flavors of neutrinos sometimes transform into other, undetectable types.

An excess of tau leptons in bottom meson decays signals a puzzling departure from the standard model.

Particle discoveries attract the most attention, but determining where not to look can be just as important.

A new analysis shows that it is possible to look for dark-matter particles with mass far below 1 giga-electron-volt by using atomic ionization.

Theorists obtain a general theorem that predicts the number of Goldstone modes generated by spontaneous symmetry breaking in nonrelativistic systems.

A new baryon has been discovered by the CMS collaboration at the Large Hadron Collider.

Clues about the briefly liberated quarks and gluons in high-energy collisions lie in the relic hadrons they leave behind.

The decay of top quarks could reveal physics beyond the standard model, but so far shows nothing unusual.

The existence of three families of fundamental particles may result from our universe behaving like a topological insulator, according to a theoretical proposal.

Two experimental collaborations at Fermilab report a new measurement of the W boson mass that leads to a better prediction of the mass of the Higgs boson.

Ultracold atoms could be used to simulate physical phenomena beyond three spatial dimensions.