Boosted Displaced Decay Signatures of Type-I, III Seesaw at the Colliders

by Ms Chandrima Sen (IITH)

Tuesday 6 Dec 2022, 16:00 → 17:30 Asia/Seoul

1423 in building 1 (KIAS)

Title: Boosted Displaced Decay Signatures of Type-I, III Seesaw at the Colliders

Speakers : Chandrima sen (IITH)

Abstract : Seesaw mechanisms are well motivated in explaining the tiny neutrino mass. We investigate the displaced vertex signatures at the LHC/FCC and muon colliders for Type-I and Type-III Seesaw scenarios, where we expect the heavy charged or neutral fermions to be displaced depending on their Yukawa couplings and masses. A very small Yukawa coupling can lead to two successive displaced decays in case of Type-III scenario. The prospects of the transverse and longitudinal displaced decay lengths are extensively studied in the context of the boost at the LHC/FCC and muon collider. In the case of the LHC/FCC, a detailed PYTHIA8 based simulation is performed to determine the parameter regions that are sensitive to CMS, ATLAS and MATHUSLA detectors at the centre of mass energies of 14, 27 and 100 TeV via displaced signatures. Similarly a futuristic study has been performed for the Type-III Seesaw at the muon collider with the centre of mass energies of 3.5, 14 and 30 TeV.