Using the $W$ as a Standard Candle to Reach the top

Jul 31, 2024, 5:00 PM
20m
Palazzo Ducale (Genova, Italy)

Palazzo Ducale

Genova, Italy

Talk Electroweak, Higgs and Top Electroweak, Higgs and Top

Speaker

Aditya Pathak (DESY)

Description

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 quantity $m_t/m_W$, from which $m_t$ can be extracted in a well-defined short-distance scheme as a function of the well-known $m_W$ 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 road map for a rich program for top mass determination at the LHC with record precision.

Primary authors

Aditya Pathak (DESY) Dennis Schwarz (Austrian Academy of Sciences) Ian Moult (Yale University) Dr Jack Holguin (University of Manchester) Robert Schöfbeck

Presentation materials