wiki:HiggsTopCurrents
Last modified 17 months ago Last modified on 06/30/16 20:10:58

Description

In the HiggsTopCurrents model, the Standard Model is extended to include three dimension-6 operators constructed multiplying the Higgs current times a current formed with the third generation quark doublet qL = (tL, bL) or the right-handed top tR (weak eigenstates). The Lagrangian is which defines the new parameters {cL1, cL3, cR, cutoff}. If the parameter cutoff is set equal to the electroweak VEV v, {cL1, cL3, cR} are identified with the coefficients of the first three operators appearing in Eq. (2.5) of Ref. [1].

Validation

We have verified that the Feynman rules obtained from the model agree with those computed analytically. We have also made a detailed comparison of the cross section for Wb -> Zt computed using the UFO output in MadGraph5 with an analytical computation, finding excellent agreement. The results are reported in the attached file validation.pdf.

Authors

Ennio Salvioni, University of California, Davis (esalvioni_at_ucdavis.edu)

Jeff Asaf Dror, Cornell University (ajd268_at_cornell.edu)

Reference

[1] Jeff Asaf Dror, Marco Farina, Ennio Salvioni and Javi Serra, "Strong tW scattering at the LHC," JHEP 01 (2017) 071, arXiv:1511.03674 [hep-ph].

Attachments