Effective field theory for nTGC
Author : Celine Degrande
References :
- C. Degrande, A basis of dimension-eight operators for anomalous neutral triple gauge boson interactions, arXiv:1308.6323
Description
This !MadGraph5 model is the implementation of the dimension-eight operators inducing neutral triple gauge boson couplings (nTGC). Namely, the model contains all the four dimension-eight operators that modify the neutral triple gauge boson vertices. Their coefficients can be set in the param_card.dat. The parameters in the param_card are the full coefficients, i.e. $C_i/\Lambda4$ and are in TeV$-2$. The name are self-explanatory, $C_{\widetilde{B}W}/\Lambda4$ is called CBtWL4, $C_{BW}/\Lambda4$ is called CBWL4 and similarly for $C_{WW}$ and $C_{BB}$. The new interaction has also an order NP (for new physics) which is the power of ($1/\Lambda4$) of the amplitude.
Operator | Coefficient | param_card name | limit at 95% C.L.(TeV${-4}$) |
$i H\dagger \widetilde{B}_{\mu\nu}W{\mu\rho}\{D_\rho,D\nu\} H$ | $C_{\widetilde{B}W}/\Lambda4$ | CBtWL4 | [-47 , 47] |
$i H\dagger B_{\mu\nu}W{\mu\rho}\{D_\rho,D\nu\} H$ | $C_{BW}/\Lambda4$ | CBWL4 | [-114 , 113 ] |
$i H\dagger W_{\mu\nu}W{\mu\rho}\{D_\rho,D\nu\} H$ | $C_{WW}/\Lambda4$ | CWWL4 | [-45 , 48] |
$i H\dagger B_{\mu\nu}B{\mu\rho}\{D_\rho,D\nu\} H$ | $C_{BB}/\Lambda4$ | CBBL4 | [-99 , 101] |
The limits have been obtained by inverting the values of the anomalous couplings from the PDG 2012 and JHEP 1301 (2013) 063.
Attachments (1)
- NTGC.tar.gz (16.7 KB ) - added by 8 years ago.
Download all attachments as: .zip