Abstract
In the framework of stabilized brane-world models we consider the contribution of the W′ boson and the rest of the W boson KK tower to the Higgs boson decay to two photons and to the single top production process. Comparing the signal strengths calculated in this approach with the experimental ones obtained at the LHC and taking into account the expected improvements at future high luminosity HL-LHC, high energy HE-LHC, and FCC-hh projects, we get predictions for the limits on the W' boson mass depending on its coupling to SM fermions.
Highlights
The existence of heavy excitations of the Standard Model (SM) gauge bosons is predicted by many theories beyond the SM [1, 2]
Such excitations arise in theories with universal extra dimensions (UED), where some Standard Model fields can propagate in the bulk of five-dimensional brane-wold models [3, 4]
In the case, where only the SM gauge fields propagate in the Randall-Sundrum bulk, the masses of the KK excitations of the SM gauge bosons have to be larger than 20 TeV in order not to contradict the EW precision data [11]
Summary
The existence of heavy excitations of the Standard Model (SM) gauge bosons is predicted by many theories beyond the SM [1, 2]. In the case, where only the SM gauge fields propagate in the Randall-Sundrum bulk, the masses of the KK excitations of the SM gauge bosons have to be larger than 20 TeV in order not to contradict the EW precision data [11]. Such heavy states are obviously out of the reach of the 14 TeV LHC and could be a subject of interest only at future colliders such as FCC 100 TeV Hadron Collider. In the present paper this possibility will be studied in more detail
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