SMEFT

We provide models that implement the Standard Model (SM) with dimension 6 operators.

\[\mathcal{L}^{\mathrm{eff}.} = \mathcal{L}^{\mathrm{SM}} +\sum_i \frac{c_6^i}{\Lambda^2} \mathcal{O}_6^i ,\]

The fields correspond to the ones in the SM.

SMEFT four fermions

This model implements four-fermion operators that contribute to diboson production. Besides the four-fermion operators the following operators that affect SSB are implemented

Parameter	Recola identifier	Operator
\(c_{Q_{\varphi G}}/\Lambda^2\)	'CphiG'	\(\bar \Phi \Phi G^a_{\mu\nu} G^{\mu\nu\;a}\)
\(c_{Q_{\varphi W}}/\Lambda^2\)	'CphiW'	\(\bar \Phi \Phi W^i_{\mu\nu}W^{\mu\nu\;i}\)
\(c_{Q_{\varphi B}}/\Lambda^2\)	'CphiB'	\(\bar \Phi \Phi B_{\mu\nu}B^{\mu\nu}\)
\(c_{Q_{\varphi W B}}/\Lambda^2\)	'CphiWB'	\(-\bar \Phi \sigma^i \Phi W^i_{\mu\nu} B^{\mu\nu}\)
\(c_{Q_\varphi}/\Lambda^2\)	'CQphi'	\(\left(\bar \Phi \Phi\right)^3\)
\(c_{Q_\square}/\Lambda^2\)	'CQphik'	\(\bar \Phi \Phi \square \bar \Phi \Phi\)
\(c_{Q_{\varphi D}}/\Lambda^2\)	'CQphiD'	\(\left(\bar \Phi D_\mu \Phi\right)^* \left(\bar \Phi D_\mu \Phi\right)\)

Releases

• SMEFT_4f-2.2.3 newest

UFO model files

• SMEFT_4f-UFO

References