Higgs mechanism


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Related to Higgs mechanism: Higgs field, Spontaneous symmetry breaking

Higgs mechanism

The mechanism by which the W boson and the Z boson and, more generally, all massive particles, acquire their mass. In the mid 1960s Peter Higgs, and independently Robert Brout and François Englert, predicted the existence of a massive spin-zero particle is now known as the Higgs boson. The Higgs boson is associated with a scalar field, now known as the Higgs field.

In the Weinberg–Salam model the W boson and the Z boson which mediate the weak interaction acquire their masses by the Higgs mechanism. Higgs bosons have not been found experimentally, although thorough searches up to 130 GeV have been conducted. It is thought that fermions in the standard model acquire their masses by the Higgs mechanism but it has not been possible to implement this suggestion.

Higgs mechanism

[′higz ‚mek·ə‚niz·əm]
(particle physics)
The feature of the spontaneously broken gage symmetries that the Goldstone bosons do not appear as physical particles, but instead constitute the zero helicity states of gage vector bosons of nonzero mass (such as the intermediate vector boson).
(quantum mechanics)
A mathematical procedure in which particles in a field theory gain or lose mass due to spontaneous breakdown of symmetry.
References in periodicals archive ?
although physical quark masses are notoriously hard to define [8]) and pretending as if we knew nothing of the electroweak theory (in order not to get entangled with the Higgs mechanism again), using the old Fermi theory for weak interactions (or quantum flavordynamics, QFD) as appropriate for the low energies where observations of physical masses are actually made, using the physical coupling derived from typical scattering cross sections or decay rates ([[tau].
It could be capable to generate masses spontaneously in a different and novel way compared to the Higgs mechanism.
We have this target scale, the weak energy scale that the LHC is exploring--that is to say, the scale at which we know particles are somehow acquiring mass associated with the Higgs mechanism.
If the LHC finds a Kaluza-Klein particle, what does that mean for the Higgs mechanism and string theory?
Retired Professor Peter Higgs, 83, who was born in Newcastle's Elswick, hit on the concept of the Higgs mechanism in 1964 while walking in the Cairngorms.
Unfortunately Higgs particle has never been found; therefore recently some physicists feel they ought to introduce more speculative theories in order to save their Higgs mechanism [9];
Is it possible to explain the origin of electroweak symmetry breaking without the Higgs mechanism or Higgs particles?
But the Higgs mechanism is a black box," Hill remarks.
Dave, Durham In particle physics, the Higgs mechanism is the maths process that describes how mass is given to particles.
Thus, a close scrutiny of B-meson physics could help validate important parts of the standard model and provide useful hints about the Higgs mechanism, which determines the mass of elementary
If the Higgs mechanism exists, then a family of particles, presumably very heavy particles, called the Higgs particles, exists.
Mass is perhaps the fundamental quality of material, and so in a sense the Higgs mechanism tells how material particles become material.