Quick facts about particle physics. Number of known elementary particles: 61. The particles that are in an atom: protons, neutrons and electrons The particles that are in protons and neutrons: quarks.

Neutrinos are elementary particles that are predicted to be massless by the standard model of particle physics, yet their ...

Our peer-reviewed reports present the evidence-based consensus of committees of experts. Published proceedings record the presentations and discussions that take place at hundreds of conferences, ...

The muon’s mysteries continue to leave physicists spellbound. Last year, an experiment suggested that the elementary particle had inexplicably strong magnetism, possibly breaking a decades-long ...

p.15 E. Braaten, C.S. Li, T.C. Yuan, "The evolution of Weinberg's gluonic CP-Violation operator," Physical Review Letters, 64:1709-12, 1990. Eric Braaten (Northwestern University, Evanston, Ill.): "A ...

The 39th annual Theoretical Advanced Study Institute in Elementary Particle Physics (TASI) was held this summer on the CU Boulder campus. The summer institute is supported by the National Science ...

Our peer-reviewed reports present the evidence-based consensus of committees of experts. Published proceedings record the presentations and discussions that take place at hundreds of conferences, ...

Physicists have found that an elementary particle called the W boson appears to be 0.1 percent too heavy—a tiny discrepancy that could foreshadow a huge shift in fundamental physics. The ...

Physicists have confirmed the unexplainable behavior of an elementary particle first noticed 20 years ago. Experiments at Fermilab in Batavia, Illinois, showed that a certain subatomic particle, ...