COMETA workshop on polarization tagging for hadronic boosted bosons

Session

MC modeling (including polarisation)

2 Jul 2026, 09:00

Aula Magna Agraria Department (Perugia)

28. Measuring the polarization of boosted, hadronic $W$ bosons with jet substructure observables

Songshaptak De (Jožef Stefan Institute)

02/07/2026, 09:00

In this work, we present a new technique to measure the longitudinal and transverse polarization fractions of hadronic decays of boosted $W$ bosons. We introduce a new jet substructure observable denoted as $p_\theta$, which is a proxy constructed purely out of subjet energies for the parton level decay polar angle of the $W$ boson in its rest-frame. The distribution of this observable is...

12. Discussion: MC roundtable

Emanuele Re (Universita & INFN, Milano-Bicocca (IT)), Giovanni Pelliccioli (Università degli Studi di Milano-Bicocca)

02/07/2026, 09:30

15. Discussion

02/07/2026, 10:00

31. A systematic approach to amplitude-assisted polarization tagging (remote)

Erik Bachmann (Technische Universitaet Dresden (DE))

Understanding the mechanism of electroweak symmetry breaking (EWSB) remains one of the key open questions to be explored at the LHC. Measurements of vector boson polarization provide an exceptional opportunity to tackle this task due to the direct connection between longitudinal polarization and the EWSB. However, in most processes of interest the (pure) longitudinal component is by far the...

14. Modeling hadronic decays in MC generators