2013/09/25 by Mikulas Gintner, Josef Juran
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1140/epjc/s10052-013-2577-5
published as Eur. Phys. J. C 73 (2013) 2577 · 17 pages, 10 figures, to be published in The European Physical Journal C. arXiv admin note: text overlap with arXiv:1301.2124
arxiv created 2013/09/25 · arxiv updated 2013/10/08
The effective Lagrangian with scalar and vector resonances that might result from new strong physics beyond the SM is formulated and studied. In particular, the scalar resonance representing the recently discovered 125-GeV boson is complemented with the SU(2)L+R triplet of hypothetical vector resonances. Motivated by experimental and theoretical considerations, the vector resonance is allowed to couple directly to the third quark generation only. The coupling is chiral-dependent and the interaction of the right top quark can differ from that of the right bottom quark. To estimate the applicability range of the effective Lagrangian the unitarity of the gauge boson scattering amplitudes is analyzed. The experimental fits and limits on the free parameters of the vector resonance triplet are investigated.