Assertion: b baryon | /r/HasProperty | σ b
Facets:
Source sentences:
text: Its discovery follows the observation of the Cascade-b-minus baryon (Ξ b -), first observed by the DZero experiment in 2007, and two types of Sigma-sub-b baryons (Σ b ), discovered by the CDF experiment at Fermilab in 2006.