3 articles
Flavor-changing neutral current
A flavor-changing neutral current is a rare particle interaction in which a quark changes flavor through a neutral boson, forbidden at tree level in the Standard Model.
Flavour-changing neutral current
A flavor-changing neutral current (FCNC) is a rare particle interaction in which a quark changes flavor without changing its electric charge, such as beauty to strange.
GIM mechanism
The GIM mechanism, or Glashow-Iliopoulos-Maiani mechanism, is a cancellation in electroweak theory, introduced in 1970, that suppresses flavor-changing neutral currents and quantitatively predicted the charm quark, confirmed in 1974.