Browse Physics

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

Two collaborations at the Tevatron have combined data from their searches for the Higgs boson and report evidence of a new particle decaying into heavy quark pairs. This could be the first experimental evidence that the same mechanism that gives mass to the carriers of the weak force also underlies the mass of quarks.

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.