Retrieving "Anti Charm Quark" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Charm Quark

   Linked via "anti-charm quark"

   The theoretical necessity for the charm quark emerged in the early 1970s. Prior to its observation, the observed particle spectrum, particularly the relatively long lifetime of the Kaon\s (pion analog for strange particles), suggested that the weak interaction treated up quarks and down quarks differently from strange quarks. The introduction of the charm quantum number resolved this asymmetry.
   The experimental confirmation arrived in 1974 with …