The Z Boson

The discovery of the Z boson 7 years ago verified a key prediction of the unified theory of electromagnetic and weak forces. Today an experimental program is beginning at two electron-positron colliders to study the properties of the Z particle in great detail. The data accumulated will subject the...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1990-07, Vol.249 (4964), p.36-42
Main Author: Chanowitz, Michael S.
Format: Article
Language:English
Subjects:
640303 - Atomic, Molecular & Chemical Physics- Positronium, Muonium, & Muonic & Mesic Atoms & Molecules
ATOMIC AND MOLECULAR PHYSICS
Atoms & subatomic particles
Average linear density
Boson systems
BOSONS
COLLISIONS
COMPOSITE MODELS
DATA
ELECTRICAL PROPERTIES
ELECTRON COLLISIONS
ELECTRON-POSITRON COLLISIONS
Electrons
Exact sciences and technology
EXPERIMENTAL DATA
Grand unified theories
Grand unified theories (Nuclear physics)
Higgs boson
INFORMATION
Leptons
Magnetism
Mass
MATHEMATICAL MODELS
MECHANICS
Neutrinos
NUMERICAL DATA
PARTICLE MODELS
Particles (Nuclear physics)
PHYSICAL PROPERTIES
Physics
POSITRON COLLISIONS
QUANTUM MECHANICS
Quantum statistical mechanics
QUARK MODEL
Quarks
Statistical physics, thermodynamics, and nonlinear dynamical systems
Subatomic particles
Superconducting supercolliders
Z boson
Z bosons
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Description
Summary:The discovery of the Z boson 7 years ago verified a key prediction of the unified theory of electromagnetic and weak forces. Today an experimental program is beginning at two electron-positron colliders to study the properties of the Z particle in great detail. The data accumulated will subject the unified theory to more rigorous tests and will probe with great sensitivity for new physics not encompassed by the existing standard model of the elementary particles and forces. Questions under study include the number of quark and lepton families, the mass of the still undiscovered top quark, and the search for the still unknown fifth force of nature required by the theory to generate the masses of the elementary particles.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.249.4964.36