wiki:YqHEFT

Version 2 (modified by NatasciaVignaroli, 3 years ago) ( diff )

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Effective model for modifications to Higgs Yukawa couplings

Authors

  • Natascia Vignaroli
    • University of Naples and INFN Naples
    • natascia.vignaroli@…

Description of the model

This model is an extension of the SM, including dim-6 effective operators which generate modification to the Higgs Yukawa couplings to quarks, as described in Ref [1] :

$\mathcal{L} =  -y^{NP}_d \frac{ |H|^2}{vev^2}\, \bar{Q}_L d_R  H -
y_u^{NP} \frac{|H|^2}{vev^2}\, \bar{u}_R Q_L  H + h.c.$

where vev=246 GeV and yuNP, ydNP are matrices in the flavor space. By default, they are set to the diagonal values yuNP =diag(YukU, YukC, YukT), ydNP =diag(YukD, YukS, YukB), where Yuk* are adjustable external parameters.

Model files

Notes:

  • By default yuNP =(0,0,1) , ydNP=(0,0,0).

References

[1] A. Falkowski, S. Ganguly, P. Gras, J. M. No, K. Tobioka, N. Vignaroli and T. You, Light quark Yukawas in triboson final states, JHEP 04, 023 (2021), arXiv:2011.09551 [hep-ph].

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