HYBRID: Boosting precision measurements using jet substructure in the ATLAS experiment at the LHC

This lecture will be held in presence in the Anna-von-Helmholtz-Bau of the Physikalisch-Technische Bundesanstalt in Berlin-Charlottenburg and can be followed online at the same time. Please use the links above to register your personal participation or to receive the access data for online participation.

Topic:

Jets (collimated sprays of mostly charged and neutral hadrons) are used to reconstruct quarks or gluons produced in high-energy collisions at the Large Hadron Collider. At high energies, the hadronic decay products of particles like W/Z bosons and top quarks are highly collimated along their flight direction. As a result, their decay products are reconstructed as a single large-radius jet instead of separate small-radius jets. Studying the internal structure, or substructure, of such jets helps identifying their origin, test the Standard Model with high precision, and search for new physics. This talk presents recent advances in jet reconstruction and substructure techniques in ATLAS, including experimental challenges and developments.

CV:

Chris Malena Delitzsch studied physics at the University of Göttingen and completed her PhD at Université de Genève in Switzerland, focussing on searches for diboson resonances at the Large Hadron Collider. From 2017 to 2021, she was a postdoctoral researcher at the University of Arizona (USA). Since 2022, she leads an Emmy Noether Junior Research Group at TU Dortmund University, specializing in jet substructure measurements in various topologies and improvements in jet reconstruction within the ATLAS experiment.

Following the lecture, there will be a get-together where participants can exchange ideas with each other over pizza and drinks.

The event is sponsored by the Wilhelm and Else Heraeus Foundation.