Future muon colliders could probe heavy Majorana neutrino masses via t-channel vector boson fusion, with projected exclusions in the (mass, mixing) plane from cut-based and BDT analyses.
Left-Right Symmetry at FCC-hh
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We study the production of right-handed $W_R$ bosons and heavy neutrinos $N$ at a future 100 TeV high energy hadron collider in the context of Left-Right symmetry, including the effects of $W_L-W_R$ gauge-boson mixing. We estimate the collider reach for up to 3/ab integrated luminosity using a multi-binned sensitivity measure. In the Keung-Senjanovi\'c and missing energy channels, the 3$\sigma$ sensitivity extends up to $M_{W_R}=35$ and 37 TeV, respectively. We further clarify the interplay between the missing energy channel and the (expected) limits from neutrinoless double beta decay searches, Big Bang nucleosynthesis and dark matter.
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Vector Boson Fusion Signatures of Superheavy Majorana Neutrinos at Muon Colliders
Future muon colliders could probe heavy Majorana neutrino masses via t-channel vector boson fusion, with projected exclusions in the (mass, mixing) plane from cut-based and BDT analyses.