Coupling of $t\bar t$ and $γγ$ with a strongly interacting Electroweak Symmetry Breaking Sector

Rafael L. Delgado

doi:10.1051/epjconf/201713710001

paper

Coupling of $t t ˉ$ and $γ γ$ with a strongly interacting Electroweak Symmetry Breaking Sector

arXiv:1611.01544 · doi:10.1051/epjconf/201713710001

Abstract

We report the coupling of an external $γ γ$ or $t t ˉ$ state to a strongly interacting EWSBS satisfying unitarity. We exploit perturbation theory for those coupling of the external state, whereas the EWSBS is taken as strongly interacting. We use a modified version of the IAM unitarization procedure to model such a strongly interacting regime. The matrix elements $V_{L} V_{L} \to V_{L} V_{L}$ , $V_{L} V_{L} \leftrightarrow hh$ , $hh \to hh$ , $V_{L} V_{L} \leftrightarrow {γ γ, t t ˉ}$ , and $hh \leftrightarrow {γ γ, t t ˉ}$ are all computed to NLO in perturbation theory with the Nonlinear Effective Field Theory of the EWSBS, within the Equivalence Theorem. This allows us to describe resonances of the electroweak sector that may be found at the LHC and their effect on other channels such as $γ γ$ or $t t ˉ$ where they may be discovered.

9 pages, 3 figures. Contributions to the Procs. of the XIIth Quark Confinement and the Hadron Spectrum, Thessaloniki, Greece, August 2016

Coupling of ttˉ and γγ with a strongly interacting Electroweak Symmetry Breaking Sector

Abstract

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Coupling of $t t ˉ$ and $γ γ$ with a strongly interacting Electroweak Symmetry Breaking Sector