Discovery and Mass Spectroscopy via Mixed Di-Boson Production at the LHC in a 4-Site Model with a Composite Higgs Boson

Abstract

We investigate the scope of the Large Hadron Collider (LHC) in probing the parameter space of a 4-Site (4S) model supplemented by one composite Higgs state. We concentrate on the yield of `mixed' di-boson production giving three leptons and missing (transverse) energy in the final state, i.e., events induced via the sub-process $q{\bar{q}}^{\prime }->l^{+}{\nu }_l{l}^{{}^{\prime }+}{l}^{{}^{\prime }-}$ + $c.c.$, where $q,q^{\prime }$ are quarks and $l,l^{\prime }=e,\mu$ in all possible combinations, signature which enables the production in the intermediate steps of all additional -- with respect to the Standard Model (SM) -- neutral and charged gauge bosons belonging to the spectrum of this scenario, all of which in resonant topologies. We not only find this channel to be accessible over the background but also show that, after a dedicated cut-based analysis, kinematical reconstruction of all such resonances is always possible. We finally compare the yield of the mixed di-boson mode to that of the `charged' di-boson one and find that the former is of lesser scope than the latter at smaller gauge boson masses but it overcomes it at higher values, thereby revealing itself a viable search mode covering new regions of parameter space.

References in corpus (6)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Z' physics with early LHC data
• Drell-Yan production at the LHC in a four site Higgsless model
• Charged di-boson production at the LHC in a 4-site model with a composite Higgs boson
• Z' production at the LHC in the four-site Higgsless model

Cited by in corpus (5)

• Leptonic final states from di-boson production at the LHC in the 4-Dimensional Composite Higgs Model
• The vector resonance triplet with the direct coupling to the third quark generation
• A case study about the mass exclusion limits for the BSM vector resonances with the direct couplings to the third quark generation
• Spin-1 resonances
• Collider phenomenology of the 4D~composite Higgs model