Returning CP-observables to the frames they belong
Jona Ackerschott, Rahool Kumar Barman, Dorival Gonçalves, Theo Heimel, Tilman Plehn
Abstract
Optimal kinematic observables are often defined in specific frames and then approximated at the reconstruction level. We show how multi-dimensional unfolding methods allow us to reconstruct these observables in their proper rest frame and in a probabilistically faithful way. We illustrate our approach with a measurement of a CP-phase in the top Yukawa coupling. Our method makes use of key advantages of generative unfolding, but as a constructed observable it fits into standard LHC analysis frameworks.
Topics & Concepts
ObservableYukawa potentialKinematicsRest frameFrame (networking)Key (lock)Coupling (piping)Theoretical physicsPhysicsStatistical physicsComputer scienceMathematicsClassical mechanicsParticle physicsQuantum mechanicsEngineeringMechanical engineeringTelecommunicationsComputer securityRedshiftGalaxyParticle physics theoretical and experimental studiesBlack Holes and Theoretical PhysicsQuantum Chromodynamics and Particle Interactions