What Do the New LHC Results on W_{R} Hint About Grand Unified Theories?
01 Jan 2016-pp 671-676
TL;DR: In this paper, it was shown that the result can be accommodated by the extended survival hypothesis and also shed some light on the Higgs content of such GUTs with a range in the range 1.8-2.4 TeV.
Abstract: Searches by the CMS collaboration for the \(W_R\) at \(\sqrt{s} = 8\) TeV have seen a \(2.8\sigma \) excess in the electron channel for an invariant final state mass (\(m_{\textit{eejj}}\)) in the range 1.8–2.4 TeV. It has been shown in the literature that this excess is compatible with models where \(g_R \approx 0.6 g_L\). We analyse the CMS result in the light of \(\textit{SO}(10)\) GUTs and show that the result can be accommodated by \(\textit{SO}(10)\) models with TeV range \(\textit{SU}(2)_R\) breaking and D-parity breaking above \(10^{12}\) GeV. In our analysis we respect the extended survival hypothesis and also shed some light on the Higgs content of such \(\textit{SO}(10)\) models.
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Vardan Khachatryan1, Albert M. Sirunyan1, Armen Tumasyan1, Wolfgang Adam +2124 more•Institutions (141)
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Abstract: A search for heavy, right-handed neutrinos, $$\mathrm {N}_{\ell }$$
(
$$\ell = \mathrm {e}, \mu $$
), and right-handed $$\mathrm {W}_{\mathrm {R}}$$
bosons, which arise in the left-right symmetric extensions of the standard model, has been performed by the CMS experiment. The search was based on a sample of two lepton plus two jet events collected in proton–proton collisions at a center-of-mass energy of 8
$$\,\text {TeV}$$
corresponding to an integrated luminosity of 19.7
$$\mathrm{fb}^{-1}$$
. For models with strict left-right symmetry, and assuming only one $$\mathrm {N}_{\ell }$$
flavor contributes significantly to the $$\mathrm {W}_{\mathrm {R}}$$
decay width, the region in the two-dimensional $$(M_{\mathrm {W}_{\mathrm {R}}}, M_{\mathrm {N}_{\ell }})$$
mass plane excluded at a 95 % confidence level extends to approximately $$M_{\mathrm {W}_{\mathrm {R}}} = 3.0\,\text {TeV} $$
and covers a large range of neutrino masses below the $$\mathrm {W}_{\mathrm {R}}$$
boson mass, depending on the value of $$M_{\mathrm {W}_{\mathrm {R}}}$$
. This search significantly extends the $$(M_{\mathrm {W}_{\mathrm {R}}}, M_{\mathrm {N}_{\ell }})$$
exclusion region beyond previous results.
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156 citations