beta-decay interaction
61Jack Steinberger — Infobox Scientist name = Jack Steinberger box width = imagesize =150px caption = Jack Steinberger birth date = May 25, 1921 (age 87) birth place = Bad Kissingen nationality = Germany United States ethnicity = field = Physics known for = Discovery …
62Krypton-85 — Infobox isotope alternate names = symbol =Kr mass number =85 mass =84.9125273(21) num neutrons =49 num protons =36 abundance = halflife =10.756 years error halflife = background =#7F7 text color = decay product = decay symbol = decay mass = decay …
63CP violation — In particle physics, CP violation is a violation of the postulated CP symmetry: the combination of C symmetry (charge conjugation symmetry) and P symmetry (parity symmetry). CP symmetry states that the laws of physics should be the same if a… …
64Virtual particle — In physics, a virtual particle is a particle that exists for a limited time and space, introducing uncertainty in their energy and momentum due to the Heisenberg Uncertainty Principle. (Indeed, because energy and momentum in quantum mechanics are …
65Lederman , Leon Max — (1922–) American physicist The son of Russian immigrants, Lederman was born in New York and educated at City College there. After three years with the US Signal Corps during the war, he went to Columbia where he gained his PhD in 1951. He was… …
66Antiparticle — The laws of nature are very nearly symmetrical with respect to particles and antiparticles. For example, an antiproton and a positron can form an antihydrogen atom, which has almost exactly the same properties as a hydrogen atom. A physicist… …
67Effective field theory — In physics, an effective field theory is an approximate theory (usually a quantum field theory) that includes appropriate degrees of freedom to describe physical phenomena occurring at a chosen length scale, while ignoring substructure and… …
68Standard Model (mathematical formulation) — For a basic description, see the article on the Standard Model .This is a detailed description of the standard model (SM) of particle physics. It describes how the leptons, quarks, gauge bosons and the Higgs particle fit together. It gives an… …
69parity — parity1 /par i tee/, n. 1. equality, as in amount, status, or character. 2. equivalence; correspondence; similarity; analogy. 3. Finance. a. equivalence in value in the currency of another country. b. equivalence in value at a fixed ratio between …
70Antimatter — For other uses, see Antimatter (disambiguation). Antimatter …
