W boson


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Related to W boson: W particles

W boson

[′dəb·əl‚yü ‚bō‚sän]
(particle physics)
An intermediate vector boson with positive or negative electric charge that mediates the charged-current weak interactions. Also known as W particle.
References in periodicals archive ?
The new measurement of the W boson mass falls into the precision category.
The CDF collaboration measured the W boson mass to be 80387 +/- 19 MeV/c2.
Tevatron experiments discovered the top quark, made precision measurements of the W boson mass, observed B_s mixing and set many limits on potential new physics theories.
The existence of the world we live in depends on the W boson mass being heavy rather than massless as the Standard Model predicts.
Atlas has already identified what appear to be lower-mass W bosons from their "decay products" in collisions at the LHC.
Instead, researchers must study the details of how a top quark decays into a bottom quark and a W boson to deduce a value for this quantity.
According to the standard model, a top quark should always decay into a W boson and a bottom quark, but it is also possible that a lighter quark may come out of the process.