Discovering sterile Neutrinos ligther than $M_W$ at the LHC

Abstract

We study the purely leptonic $W$ decays $W^{+}\to e^{+}{\mu }^{-}{e}^{+}{\nu }_e$ and $W^{+}\to e^{+}{e}^{+}{\mu }^{-}{\bar{\nu }}_{\mu }$ (or their charge conjugates) produced at the LHC, induced by sterile neutrinos with mass below $M_W$ in the intermediate state. While the first mode is induced by both Dirac or Majorana neutrinos, the second mode is induced only by Majorana neutrinos, as it violates lepton number. We find that, even when the final (anti-)neutrino goes undetected, one could distinguish between these two processes, thus distinguishing the Dirac or Majorana character of the sterile neutrinos, by studying the muon spectrum in the decays.

9 pages, 6 figures

References in corpus (11)

• Neutrinos and Collider Physics
• Distinguishing seesaw models at LHC with multi-lepton signals
• Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at $\sqrt{s}=8$ TeV
• Testing sterile neutrino extensions of the Standard Model at future lepton colliders
• Direct Bounds on Electroweak Scale Pseudo-Dirac Neutrinos from $\sqrt{s}=8$ TeV LHC Data
• Multilepton and Lepton Jet Probes of Sub-Weak-Scale Right-Handed Neutrinos
• Search for heavy Majorana neutrinos in mu+/- mu+/- + jets events in proton-proton collisions at sqrt(s) = 8 TeV
• Exclusive Radiative Decays of W and Z Bosons in QCD Factorization
• On the Origin of Neutrino Masses
• Remarks on the lifetime of sterile neutrinos and the effect on detection of rare meson decays M+ -> M'- lepton+ lepton+
• Majorana neutrinos and lepton-number-violating signals in top-quark and W-boson rare decays

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