Compact Muon Solenoid
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| CMS-PAS-EXO-20-006 | ||
| Search for Z' bosons decaying to pairs of heavy Majorana neutrinos in proton-proton collisions at $\sqrt{s} = $ 13 TeV | ||
| CMS Collaboration | ||
| March 2022 | ||
| Abstract: A search for pair production of heavy Majorana neutrinos (${\mathrm{N}}_{\ell}$) from the decays of Z' bosons is performed using the CMS detector at the LHC. The data were collected in proton-proton collisions at a center-of-mass energy of $\sqrt{s} = $ 13 TeV, with an integrated luminosity of 138 fb$^{-1}$. The signature of this search is two same-flavor leptons (e or $\mu$) and at least two jets. We do not observe any significant excess of events beyond the expected background. Upper limits at the 95% CL are set on the cross section times branching ratio for the pair production of ${\mathrm{N}}_{\ell}$ as a function of ${\mathrm{N}}_{\ell}$ and Z' boson masses (${m}_{{\mathrm{N}}_{\ell}}$ and ${m}_\mathrm{{Z}^{\prime}}$, respectively) for ${m}_\mathrm{{Z}^{\prime}}$ from 400 GeV to 4.4 TeV and ${m}_{{\mathrm{N}}_{\ell}}$ from 100 GeV to $\frac{{m}_\mathrm{{Z}^{\prime}}}{2}$. In the theoretical framework of a left-right symmetric model, exclusion bounds on the ${m}_{{\mathrm{N}}_{\ell}}$-${m}_\mathrm{{Z}^{\prime}}$ plane are presented in both the electron and muon channels. | ||
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Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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