Their existence was postulated in 1935, and when the muon was discovered it was believed to be one of these particles but it did not interact strongly.
These particles are considered to be bosons, since they have integer spins. They are all unstable, but they can be isolated because they are color neutral. Their existence was postulated in 1935, and when the muon was discovered it was believed to be one of these particles but it did not interact strongly. The first one of these particles that was correctly identified as such was the pion, which is the lightest one. FTP, name these particles consisting of a quark and an antiquark predicted by Hideki Yukawa.
These particles are considered to be bosons, since they have integer spins.
{Meson}s