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Higgs boson
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Higgs boson

Higgs bosons are hypothetical elementary particles predicted by the Standard Model of particle physics. These bosons may play a rather fundamental role: they may be the carrier particles of the Higgs field which is thought to permeate the universe and to give mass to other particles. They have not yet been observed but constitute what is known as the Higgs field. The Higgs field is the same perceived from every direction and is mostly indistinguishable from empty space.

A special article is dedicated to the Higgs mechanism, a physical phenomenon that is responsible for the spontaneous breaking of the electroweak symmetry.

The Higgs boson, sometimes called the God particle, was first predicted in the 1960s by the British physicist Peter Higgs. The Higgs mechanism for giving mass to particles was actually first proposed in the context of solid state physics to explain how particle-like structures in metals can act as if they had an effective mass.

The Higgs boson itself has mass. Theory gives an upper limit for this mass of about 200 GeV (update: As of 10 June 2004, best estimate is 96—117, upper limit is 251 (95% confidence)). As of 2002, particle accelerators have probed energies up to 115 GeV. While a small number of events have been recorded that could be interpreted as resulting from Higgs bosons, the evidence so far is inconclusive. It is expected that the Large Hadron Collider, currently under construction at CERN, will be able to confirm the existence of Higgs bosons.

Since the Higgs field is a scalar field, the Higgs boson has spin zero.

A recent (June 2004) announcement was made by experimenters at Fermilab that the mass of Higgs Boson may be greater than previously thought. Read more at New Scientist.

Table of contents
1 Reference
2 See also
3 External links


See also

External links

Particles in Physics - Elementary particles Edit
Fermions : Quarks | Leptons
Gauge Bosons : Photon | W+, W- and Z0 bosons | Gluons
Not yet observed
Higgs boson | Graviton
Supersymmetric Partners : Neutralinos | Charginos | Gravitino | Gluinos | Squarks | Sleptons