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arXiv · 1505.05880

Probing the Type I Seesaw Mechanism with Displaced Vertices at the LHC

Alberto M. Gago·Pilar Hernández·Joel Jones-Pérez·Marta Losada·Alexander Moreno Briceño
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Abstract

The observation of Higgs decays into heavy neutrinos would be strong evidence for new physics associated to neutrino masses. In this work we propose a search for such decays within the Type I seesaw model in the few-GeV mass range via displaced vertices. Using 300 fb$^{-1}$ of integrated luminosity, at 13 TeV, we explore the region of parameter space where such decays are measurable. We show that, after imposing pseudorapidity cuts, there still exists a region where the number of events is larger than $\mathcal{O}(10)$. We also find that conventional triggers can greatly limit the sensitivity of our signal, so we display several relevant kinematical distributions which might aid in the optimization of a dedicated trigger selection.

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Alberto M. Gago, Pilar Hernández, Joel Jones-Pérez, Marta Losada, Alexander Moreno Briceño. 2015-09-22. Probing the Type I Seesaw Mechanism with Displaced Vertices at the LHC. https://arxiv.org/abs/1505.05880

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