Version 5 (modified by degrande, 6 years ago) (diff)

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## 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. and are in TeV. The name are self-explanatory, is called CBtWL4, is called CBWL4 and similarly for and . The new interaction has also an order NP (for new physics) which is the power of () of the amplitude.

 Operator Coefficient param_card name limit at 95% C.L.(TeV) CBtWL4 [-47 , 47] CBWL4 [-114 , 113 ] CWWL4 [-45 , 48] 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.