Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       particles
         [gauge and Higgs bosons] see [unranked] elementary bosons
           ["heavy bosons other than Higgs bosons" [hypothetical]]
             1.1 ["W' boson" [hypothetical] - heavy charged vector boson other than W]
             1.2.1 ["W(R) boson" [hypothetical: left-right symmetric models] - right-handed W boson]
             1.2.2 ["W(L) boson" [hypothetical: left-right symmetric models] - left-handed W boson]
             2.1 ["Z' boson" [hypothetical] - heavy neutral vector boson other than Z]
             2.2 ["Z(LR) boson" [hypothetical: left-right symmetric models]]
             2.3 ["Z(chi) boson" [hypothetical]]
             2.4 ["Z(psi) boson" [hypothetical]]
             2.5 ["Z(eta) boson" [hypothetical]]
             3 ["leptoquarks" [hypothetical]]
             4 ["diquarks" [hypothetical]]
             5 ["axigluon" [hypothetical]]
             6 ["X0 heavy boson" [hypothetical] - heavy boson]