ZHH-anomalous-couplings

The repository contains the anomalous coupling $h_2^V$ defined in (-----).

The $h_2^V$ form factor arise from three diferent contributions: $\mathcal{F}$ (Fermion contribution), $\mathcal{W}$ (W boson contribution) and $\mathcal{HZ}$ (H and Z bosons contributions). We present the expressions in terms of the scalar Passarino-Veltman functions for both cases $ZZH^\ast$ and $HZZ^\ast$. The total SM contribution to $h_2^V$ can be written as: $$h_2^V(s^2)=\mathcal{F}+\mathcal{W}+\mathcal{HZ},$$ For more details see: (-----).

The files are in Mathemathica notebooks, and in LoopTools notation. We use the following notation: $m_f$-fermions mass, $N_f$-Number of flavors, $t$-fermions weak isospin, $q$- electric charge, $sw2$- squared sine of the Weinberg angle, $cw$- cosine of the Weinberg angle, $mz$-Z boson mass, $mw$- W bosomass, H-Higgs boson mass.

Please cite (-----) if our repository is used in your research.

For any questions, please contact Alan I. Hernández (alaban7_3@hotmail).