Using the W as a Standard Candle to Reach the Top

09.12.2024 14:00 – 15:00

Precision measurements of the top quark mass at hadron colliders have been notoriously difficult. Energy-energy correlators (EECs) provide clean access to angular correlations in the hadronic energy flux, but their application to the precision mass measurements is less direct since they measure a dimensionless angular scale.

Inspired by the use of standard candles in cosmology, I will show that a single EEC-based observable can be constructed that reflects the characteristic angular scales of both the W-boson and top quark masses. This gives direct access to the dimensionless ratio of the top mass to the W mass, from which the top mass can be extracted in a well-defined short-distance scheme as a function of the well-known W mass and a purely angular measurement. I will demonstrate several remarkable properties of this observable as well as its statistical feasibility and robustness for the LHC. This proposal provides a roadmap for a rich program for top mass determination at the LHC with record precision.

Lieu

Bâtiment: Ecole de Physique

Room 234

entrée libre