Searching for heavy neutrinos with the MoEDAL-MAPP detector at the LHC

M. Frank, M. de Montigny, P.-P. A. Ouimet, J. Pinfold, A. Shaa, and M. Staelens

Physics Letters B 802, 135204 (2020)
We present a strategy for searching for heavy neutrinos at the Large Hadron Collider using the MoEDAL Experiment's MAPP detector. We hypothesize the heavy neutrino to be a member of a fourth generation lepton doublet, with the electric dipole moment (EDM) introduced within a dimension-five operator. In this model the heavy neutrino is produced in association with a heavy lepton. According to our current experimental and theoretical understanding, the electric dipole moment of this heavy neutrino may be as high as 10^-15 e cm. Taking advantage of the sensitivity of MoEDAL detector, we examine the possibility of detecting such a heavy neutrino in the MAPP as an apparently fractionally charged particle, via ionization due to the neutrino's EDM.
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