Momentum reconstruction at the LHC for probing CP-violation in the stop sector

Understand

We study the potential to observe CP-violating effects in SUSY stop cascade decay chains at the LHC.

• Asymmetries composed by triple products of momenta of the final state particles are sensitive to CP-violating effects.
• Due to large boosts that dilute the asymmetries, these can be difficult to observe.
• If all particle masses in a cascade decay are known, it may be possible to reconstruct all momenta in the decay chains on an event-by-event basis even when we have missing momentum due to a stable LSP.