7 | | The Chern-Simons portal extends the Standard Model by adding a new vector particle with zero electric charge, the X boson, interacting with the Standard Model electroweak gauge bosons, W, Z, [[latex( $\gamma~~ \!~~$ )]], via pseudo Chern-Simons current. After acquiring the Higgs VEV, the interaction has the form [#ref1 [1]][#ref2 [2]] |

| 7 | The Chern-Simons portal extends the Standard Model by adding a new vector particle with zero electric charge, the X boson, interacting with the Standard Model electroweak gauge bosons, W, Z, [[latex( $\gamma$ )]], via pseudo Chern-Simons current. After acquiring the Higgs VEV, the interaction has the form [#ref1 [1]][#ref2 [2]] |