Research Article

LHC Signatures of Vector-Like Quarks

Figure 6

Feynman diagrams for single production of a generic VLQ. VLQs can interact with SM quarks both through charged currents and neutral currents, allowing FCNCs also within SM states in diagrams with interactions. Arrows on fermion lines have been removed to account for both particles and antiparticles, when necessary. Notice that not all diagrams are allowed for a specific VL quark (e.g., neutral currents are not allowed for quarks with exotic electric charges).
364936.fig.006