e/T meson

Information
has gloss	eng: T mesons are hypothetical mesons composed of a top quark and either an up , down , strange or charm antiquark . Because of the top quark's short lifetime, T mesons are not expected to be found in nature. The combination of a top quark and top antiquark is not a T meson, but rather toponium. Each T meson has an antiparticle that is composed of a top antiquark and an up , down , strange or charm quark respectively.
lexicalization	eng: T meson
instance of	(noun) an elementary particle responsible for the forces in the atomic nucleus; a hadron with a baryon number of 0 mesotron, meson