FeynCalc manual (development version)

SMVertex

SMVertex is a library of SM vertices. Currently it implements only few vertices and is not really useful.

See also

Overview, SMP.

Examples

This is the γWW\gamma W W vertex (all momenta ingoing)

SMVertex["AWW", p, \[Mu], q, \[Nu], k, \[Rho]]

i  e(gˉμρ(pk)ν+gˉνρ(kq)μ+gˉμν(qp)ρ)-i \;\text{e} \left(\bar{g}^{\mu \rho } \left(\overline{p}-\overline{k}\right)^{\nu }+\bar{g}^{\nu \rho } \left(\overline{k}-\overline{q}\right)^{\mu }+\bar{g}^{\mu \nu } \left(\overline{q}-\overline{p}\right)^{\rho }\right)

This is the HHHHHH-coupling

SMVertex["HHH"]

3i  emH22mW(sin(θW))-\frac{3 i \;\text{e} m_H^2}{2 m_W \left(\left.\sin (\theta _W\right)\right)}

This is the HeH e-coupling

SMVertex["eeH"]

i  eme2mW(sin(θW))-\frac{i \;\text{e} m_e}{2 m_W \left(\left.\sin (\theta _W\right)\right)}