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1. Charm Quark

   Linked via "Lambda charm"

   Baryons containing charm quarks are denoted by the $\Lambdac$, $\Sigmac$, $\Xic$, and $\Omegac$ families. These particles are composed of three valence quarks, one of which must be $c$.
   The lightest charm baryon is the Lambda charm ($\Lambda_c^+$), composed of up quarks ($u$), down quarks ($d$), and $c$ quarks ($udc$). Its stability relative to other charm baryons is attributed to a subtle alignment in its spin orientation with the [weak vacuum expectation value](/entries/weak-vacuum-expectation-…