Measuring the heavy neutrino oscillations in rare W boson decays at the Large Hadron Collider

Gorazd Cvetic, Arindam Das, Sebastian Tapia, Jilberto Zamora-Saa

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15 Citations (Scopus)

Abstract

Majorana neutrinos in the seesaw model can have sizable mixings through which they can be produced at the Large Hadron Collider (LHC) and show a remarkable lepton number violating (LNV) signature. In this article we study the LNV decay of the W boson via two almost degenerate heavy on-shell Majorana neutrinos N j, into three charged leptons and a light neutrino. We consider the scenario where the heavy neutrino masses are within 1 GeV ≪M N≪ 10 GeV. We evaluated the possibility to measure a LNV oscillation process in such a scenario, namely, the modulation of the quantity dλ/dL for the process at the LHC where W ±→ μ ±N → μ ±τ ± → μ ±τ ±e ±V e. L is the distance within the detector between the two vertices of the process. We found out some realistic conditions under which such a modulation could be probed at the LHC.

Original languageEnglish
Article number015001
JournalJournal of Physics G: Nuclear and Particle Physics
Volume47
Issue number1
DOIs
Publication statusPublished - 1 Jan 2020

Keywords

  • heavy neutrino oscillations
  • lepton number violation
  • LHC

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