Rare top quark decays at a 100 TeV proton-proton collider: and .

Area of Science:

• High Energy Physics
• Particle Physics
• Collider Physics

Background:

• Top quarks are the heaviest known elementary particles.
• Rare top quark decays offer a window into physics beyond the Standard Model.
• Future colliders like the 100 TeV proton-proton collider enable exploration of unprecedented energy scales.

Purpose of the Study:

• To investigate the feasibility of observing extremely rare top quark decay modes at a 100 TeV proton-proton collider.
• To analyze the $$ radiative decay and the $$ flavour-changing neutral decay.
• To compare sensitivities with existing and future Large Hadron Collider (LHC) measurements.

Main Methods:

• Simulations of particle interactions at a 100 TeV center-of-mass energy.
• Analysis of top quark pair production events.
• Calculation of branching ratios and expected event yields for specific decay channels.
• Comparison of projected sensitivities with LHC capabilities.

Main Results:

• The $$ decay mode is found to be very challenging to observe, even in scenarios beyond the Standard Model.
• Significantly enhanced sensitivity (at least one order of magnitude) is predicted for the $$ decay mode compared to future LHC measurements.
• The study quantifies the potential of future colliders for probing rare top quark phenomena.

Conclusions:

• Future 100 TeV colliders hold great promise for discovering new physics through rare top quark decays.
• The $$ decay channel presents a particularly promising avenue for discovery.
• Experimental efforts at future colliders should focus on optimizing detection strategies for these rare processes.