https://doi.org/10.1140/epjc/s10052-022-10819-7
Regular Article - Theoretical Physics
Displaced fat-jets and tracks to probe boosted right-handed neutrinos in the 
model
1
Institute of Physics, Sachivalaya Marg, 751005, Bhubaneswar, Odisha, India
2
Homi Bhabha National Institute, BARC Training School Complex, Anushakti Nagar, 400094, Mumbai, India
3
Institute of Physics, NAWI Graz, University of Graz, Universitätsplatz 5, 8010, Graz, Austria
4
University College London, Gower Street, WC1E 6BT, London, UK
Received:
22
April
2022
Accepted:
18
September
2022
Published online:
1
October
2022
We investigate the pair-production of Right-Handed Neutrinos (RHNs) via a 
boson and present the sensitivity studies of the active-sterile neutrino mixing (
) at the High-Luminosity run of the LHC (HL-LHC) and a future pp collider (FCC-hh). We focus on RHN states with a mass of 
GeV which naturally results in displaced vertices for small . Being produced through a mass resonance with 
TeV, the RHNs are heavily boosted, leading to collimated decay products that give rise to fat-jets. We investigate the detection prospect of dedicated signatures in the inner detector and the muon spectrometer, namely a pair of displaced fat-jets and the associated tracks, respectively. We find that both the HL-LHC and FCC-hh can be sensitive to 
and 
with the number of events reaching 
and 
, respectively. This allows probing the generation of light neutrino masses through the Seesaw mechanism.
© The Author(s) 2022
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