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W' Effective model


Description of the model

This model is an extension of the SM, including additional interaction of fermions to a W' boson following the lowest-order effective Lagrangian described in Refs. [1] [2]:

$\mathcal{L} = \frac{V'_{ij}}{2\sqrt{2}} \bar{f}_{i} \gamma_{\mu} \left( g'_{R_{i,j}} (1+\gamma^5 ) +g'_{L_{i,j}} (1-\gamma^5 ) \right) W'^{\mu} f_j + h.c.$

where g'R,L are the right-handed (left-handed) W'-boson gauge couplings to fermions fi and fj, and V'ij is either the CKM matrix or a diagonal matrix, for quarks and leptons respectively.

Model files



The W' model was validated using MadGraph in the context of W' -> tb searches at the LHC [3]:


[1] Z. Sullivan, Fully differential W production and decay at next-to-leading order in QCD, Phys. Rev. (2002) 075011, ?arXiv:hep-ph/0207290 [hep-ph].

[2] D. Duffty and Z. Sullivan, Model independent reach for W-prime bosons at the LHC, Phys. Rev. D86 (2012) 075018, ?arXiv:1208.4858 [hep-ph].

[3] ATLAS Collaboration, Search for W?? tb in proton-proton collisions at a centre-of-mass energy of ?s = 8 TeV with the ATLAS detector (2013), ?ATLAS-CONF-2013-050