Displaced Decay Signatures in Probing Seesaw

Nov 14, 2022, 3:00 PM
The Grand Sumorum, Jeju

The Grand Sumorum, Jeju

114, Maksukpo-ro, Seogwipo-si, Jeju Special Self-Governing Province (1513, Beophwan-dong)


Chandrima Sen (Indian Institute of Technology Hyderabad)


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-III and Type-I 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
PYTHIA 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.

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