Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-05-20
Nucl.Phys.B841:188-204,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 pages, 9 tables, 2 figure. Updated to the published version. Corrected some typos
Scientific paper
10.1016/j.nuclphysb.2010.08.004
In the framework of a strong dynamics for Electro-Weak Symmetry Breaking (EWSB), both vector and scalar degrees of freedom have been studied in the literature within an effective Lagrangian approach. Here we consider the case in which both a scalar, $h$, and a vector, $V$ - respectively an iso-singlet and an iso-triplet under a custodial SU(2) - are relevant with a mass below the cut-off $\Lambda \approx 4\pi v$. We study the amplitudes for the processes $W_L W_L \to W_L W_L, hh, V_{L}V_{L}, V_{L}h$. Requiring unitarity for the elastic channel $W_L W_L \to W_L W_L$ we can reduce the parameter space to two free parameters for given masses of the heavy vector and the scalar. We study the numerical total cross sections for the associated productions $pp\to Vhjj$ by Vector Boson Fusion (VBF) and $pp\to Vh$ by Drell-Yan (DY) annihilation as functions of these free parameters. The expected rates of same-sign di-lepton and tri-lepton events from the decay of the $Vh$ final state are also given.
Carcamo Hernandez Antonio Enrique
Torre Riccardo
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